Microcontroller jobber
microcontroller programming for 1kva solar inverter
...must follow good automotive / industrial electronics practices. PCB Requirements: Multi-layer PCB design (likely 2–4 layers depending on layout optimization) Board size constraint: 100mm x 125mm maximum Layout must support compact enclosure packaging Board may support stacked configuration if necessary System Components Typical components used in the design include: ESP32 (ESP-IDF) or STM32 microcontroller BG95 Cellular modem module Power conversion circuitry (buck regulators / DC-DC) EMI/ESD EMC Current sensing devices Relay / driver circuitry Industrial connectors 12V automotive power input Scope of Work 1. Schematic Review Verify schematic integrity and electrical correctness Review power architecture and protection strategy Validate component selections and footprint...
...sensor monitoring). Before sending the PCB for manufacturing, we are looking for an experienced hardware/PCB engineer to independently review and validate the complete design to ensure it will work correctly and avoid fabrication risks. This task is strictly for design validation and technical review, not for redesign. System Overview: The board includes the following major components: ESP32 microcontroller Solar powered system (12V nominal solar panel input) MP1584 buck converter (solar to 5V) IP5306 Li-ion charger / power management 18650 Li-ion battery 9V boost converter for latching solenoid valves DRV8833 motor driver TPS3435 watchdog timer CH340C USB-UART interface RS485 sensor interface Multiple sensor inputs The device will be deployed outdoors in agricultural environment...
...speeds are essential. Because I will sometimes want to pause the motion or cycle through a couple of intensity presets, all adjustment must live on the device itself: a small tactile button (or a pair, if easier) that toggles the mover on/off and steps through, say, slow, medium, or fast randomness. No companion app, driver, or registry edits—just pure hardware control. I’m happy with any microcontroller that can enumerate as a USB HID device (ATmega32u4, RP2040, STM32, etc.) as long as you supply: • A fully assembled, tested dongle ready to ship • The firmware source and brief build instructions so I can re-flash if needed • A short user sheet showing what each button press does and the range of movement speeds The end goal is a discreet, reliab...
...developers toggle ports, poll sensors, drive LEDs or motors, and handle real-time tasks simply by touching the right memory-mapped registers. The finished tool-chain must compile down to code that runs fast, in tiny footprints, with deterministic timing. Think of the kinds of binaries you would drop into washing machines, automotive modules, or medical devices—only here the target is any ARM-based microcontroller. You will provide: • A documented language spec describing new keywords, pragmas, or intrinsics that expose registers, GPIO, interrupt vectors, and timing primitives. • A working compiler fork or LLVM/Clang front-end patch that accepts the new syntax and produces ARMv8 machine code. • A minimal runtime or header set that keeps RAM and flash u...
...source Media Dock. The dock is a hardware reader device used to interact with physical Media Volumes, which are media cartridges containing either storage media (SD card) or NFC identification tags. The board will be installed inside a dock enclosure and connected to a front display. Core Features The PCB must include support for the following components: Microcontroller ESP32 module (recommended) or equivalent microcontroller suitable for handling: SD card access NFC communication display control system logic NFC Reader The board must include an NFC reader chip (such as PN532 or equivalent) used to detect and read NFC tags embedded in Timeline media cartridges. The NFC antenna placement should be positioned near the cartridge insertion point. SD Card Interf...
...The goal is not just a gadget, but a coherent hardware family that makes interacting with my AI models feel tangible, fast, and effortless. At the center is the Desk Hub, a compact, high‑end box that lives on a desk like a small instrument. It has a small front display, a few physical buttons, a subtle light ring or LED bar, a microphone, and a speaker. Internally it runs on an ESP32‑class microcontroller with Wi‑Fi and Bluetooth. The Hub is always powered via USB‑C and always connected to my cloud backend, where all speech‑to‑text, language model processing, tools, and text‑to‑speech live. From the user’s perspective, they can press a button or say the wake word (for example “Hey Assistant”), speak naturally, and hear/see the assistant’s response. The scr...
...shows the remaining time, counting down in real time. 3. When the three minutes expire the screen simply replaces the countdown with a clear “Game Over, move to next zone ” message + a buzzer or light; 4. Once the controller is set back the system must reset itself, ready for the next player. Hardware thoughts so far: magnetic (reed or Hall) sensor to detect lift, an Arduino or comparable microcontroller running the timer logic, and a compact OLED display for each station. I am open to part recommendations if they shorten development or improve reliability, but please keep the overall design simple and cost-conscious. Deliverables I expect: • Schematic and parts list for one station, scalable to six • Clean, well-commented Arduino sketch compiling und...
Project Overview: We are developing the BIOPULSE TRIO-SCAN, an innovative, modular diagnostic device. The system consists of ONE Main Unit (Hub) based on an ESP32-S3 microcontroller, and THREE distinct interchangeable cartridges (Bio-Chemical, Cardio-Physical with dry electrodes, and Geno-Scan with micro-heating traces). We have already completed the system architecture, component selection, and conceptual design. We are looking for an experienced Hardware & Mechanical Engineer to turn our specifications into manufacturing-ready files. What We Will Provide: A detailed Technical Product Specification (TPS). A defined preliminary Bill of Materials (BOM), including the ESP32-S3 and ADS1299. High-quality 3D concept renders of the external enclosure to guide your mechanical desi...
Title: Industrial PCB Design for Arduino-based 4-Pump Chemical Dosing System Description: I am looking for a professional PCB designer to create a robust, industrial-grade PCB for a chemical dosing system. The project is based on an Arduino Uno and must be designed to eliminate EMI noise from inductive loads. Key Technical Requirements: Microcontroller: Arduino Uno (Socketed on the PCB). Outputs: Control for 4x DC Pumps (24V) and 1x Solenoid Valve via Opto-isolated Relays. Power System: 24V DC Main Input with a Resettable Fuse (PPTC) for protection. Noise Immunity: Must include Flyback Diodes (1N4007) for each output and proper decoupling capacitors for logic stability. Isolation: Separate ground planes for Logic (5V) and Power (24V) to prevent interference. External Interfa...
Hi everyone, I’m currently looking for a talented freelancer who has strong experience with Flowcode 10 and can create an amazing and efficient program for a project I’m working on. -Must be comfortable building programs in Flowcode 10 -Able to design clean, well-structured logic and functionality -Experience with microcontroller projects is a plus If you’re skilled with Flowcode and interested in collaborating, please comment below or send me a direct message with: • A short introduction • Your experience with Flowcode • Examples of previous work (if available) Looking forward to working with someone passionate about building great programs!
I need the internal circuitry of the KK-82MS scientific calculator documented so I can design a drop-in replacement PCB. Your job is to open the unit, trace every relevant signal, and give me a clear map of what connects where. The focus is on both LCD behaviour and the button-scanning scheme, so I expect you to show how each LCD segment is driven, which pins act as commons, how the microcontroller multiplexes them, and the exact keyboard matrix rows and columns the processor polls. Feel free to combine a logic analyser, multimeter, oscilloscope, or any other bench tool you trust; choice of instrumentation is up to you as long as the final data are unambiguous. Deliverables • High-resolution photos of the calculator fully disassembled, including close-ups of the flex cables a...
I need a complete hardware-and-firmware solution that blends a PIC microcontroller with Arduino-compatible modules on a custom-made PCB. The end goal is to streamline several industrial processes, and I also want the design flexible enough to drive lighting, heating & cooling, and security subsystems that resemble home-appliance automation. Here is what I envisage: • Schematic and PCB layout ready for fabrication, including a clean separation between the PIC control core and any auxiliary Arduino shields or sensor breakouts. • Embedded C / Arduino-style firmware that handles real-time control loops, sensor inputs, and actuator outputs for an industrial environment. • A concise BOM with component part numbers that are actually in stock. • Production-re...
I’m building a microcontroller-based system around an stm32 and need compact, reliable embedded-C firmware that lets me read multiple sensors and move their data cleanly through standard communication channels. The core of the job is classic microcontroller programming: bring up the chip, initialise the peripherals that the sensors require (typical I²C, SPI or simple GPIO timing), perform periodic reads, apply any basic filtering the devices recommend, then expose the results over the communication protocols we agree on—UART is mandatory; CAN or USB-CDC would be a welcome extra if time allows. You will be working with the latest STM32CubeIDE tool-chain, so please be comfortable with HAL and, where efficiency demands, direct-register work. I’ll supply f...
...• A rigid steel frame for durability, yet light enough to remain truly portable. • Quiet, sealed gear-motor driven by a rechargeable battery pack with enough capacity for a full shift. I need a freelancer who can translate this outline into a complete, ready-to-manufacture solution. The work spans mechanical design (3-D CAD, load calculations), electronics (motor driver, timer circuit or microcontroller, safety interlock, battery management), and embedded firmware that lets me tweak the hourly advance interval if required. Deliverables 1. CAD files and assembly drawings showing the steel chassis, spindle arrangement, and low-angle entry/exit ramps. 2. Electrical schematic, PCB layout, and firmware source code that runs the hourly advance sequence. 3. Motor and battery...
...a Danfoss EKC 202C refrigeration controller via Modbus RTU (RS-485) and provides a local web interface. The system should allow monitoring of key controller values and limited control via a browser. The first version is a local-only solution without cloud connectivity, but the architecture must allow future expansion to cloud services. Hardware Assumptions • ESP32 or similar WiFi-enabled microcontroller • RS485 interface module for Modbus RTU communication • Connection to Danfoss EKC 202C controller (via Modbus adapter) Setup Flow • On first boot the device starts its own WiFi Access Point • User connects via smartphone or laptop • User opens configuration page at • User enters WiFi SSID, WiFi password, and device name • Device connects t...
...and component selection. The goal is to create a reliable and production-ready board suitable for prototyping and future mass manufacturing. Scope of Work • Design complete electronic schematic based on provided requirements • Develop PCB layout (4-layer preferred) • Select components available from major distributors • Implement power regulation and protection circuits • Integrate microcontroller and communication interfaces • Optimize the design for signal integrity, EMC, and manufacturability • Prepare all required manufacturing and assembly files Technical Requirements • Experience with embedded systems and microcontrollers • Knowledge of communication interfaces such as UART, I2C, SPI, CAN, USB • Experience desig...
The nRF52840-Based BLE Wearable Hardware Design project focuses on developing a Bluetooth Low Energy (BLE) wearable device using the nRF52840 microcontroller. The design includes selecting and integrating components, designing the PCB, and ensuring low power consumption and reliable BLE communication. The project aims to deliver a functional, compact, and energy-efficient wearable device for various applications.
Looking for an electronic hardware designer / embedded consultant to help select the right low-cost, reliable, and easily sourceable microcontroller in India for products like ovens, incubators, and similar equipment typically employing a PID controller, a LCD/SPI/UART based display with read/write USB option and few IOs. Need someone who can handle both: technical recommendation of the microcontroller commercial sourcing guidance in Hyderabad / India The person should be able to suggest the best MCU based on cost, availability, reliability, peripherals, and production scalability, and also guide on vendors/distributors, pricing, MOQ, and backup sourcing options. Experience in embedded systems, industrial electronics, BOM optimization, and Indian electronics sourcing is ...
I’m ready to move an industrial-grade controller from concept to production and need a designer who has already shipped tight, 6-layer boards. The board must host a main microcontroller, its support circuitry, and several high-current power-regulator stages, all within a restricted outline while meeting EMI/EMC limits typical for factory environments. You’ll start from my block diagram and rough schematic notes, turn them into a production-ready layout, and supply every file the assembly house will ask for: updated schematics, stack-up, Gerbers, drill files, pick-and-place, BOM, and a brief design report explaining how the EMC strategy and size targets were achieved. I’ll be available for rapid feedback on component placement and routing choices, and we’l...
Project Description (PCB Design) I am looking for a PCB designer to design a low-power IoT board for production line. Main requirements: Microcontroller: ESP32 with Wi-Fi or other Sensors: VL53L4CD Time-of-Flight laser distance sensor 10K NTC thermistor temperature sensor probe The sensors should be connected by wire to the PCB Low power consumption (battery-powered, using NiMH battery) Removable battery (NiMH ) Connector for external sensors (JST-PH 2-pin or similar) The laser sensor may be placed remotely with a cable from the PCB The PCB should low-cost manufacturing and low power consumption. Deliverables: Schematic design PCB layout BOM (bill of materials) Gerber files for manufacturing Basic firmware guidance if needed
I need a complete design for a compact consumer-electronics board that revolves around a PIC microcontroller. The scope spans three tightly-linked parts: • PCB hardware – Produce the schematic and multilayer layout in Altium Designer, include all libraries you create, and deliver the full manufacturing package (Gerbers, drill files, pick-and-place, and a PDF schematic). -PCBA implementation with JLCPCB Acceptance criteria – Board passes electrical rule checks and is ready for fabrication without edits. I will provide exact sensor part numbers, preferred connectors, and enclosure dimensions after kickoff; you are free to choose regulators, clocks, and protection components so long as you stay within a 3.3 V rail and keep the BOM cost-effective.
...readings that make the data unusable. What I need is a clean, reliable way to sense those isolated DC voltages without tying the reference points together. Whether that means introducing isolated amplifiers, optocouplers, tiny transformers, or another proven technique is up to you; I’m open to whichever approach gives stable, repeatable results and keeps the measurement side safe for the microcontroller. Here’s what I’d like back: • An updated schematic that drops into my existing design, showing every connection required for proper isolation • A concise parts list with recommended component values and footprints I can actually buy today • A short rationale explaining how the proposed stage cures the isolation problem and what accuracy I ca...
I’m building an educational, ...reliably detect pressure or touch and send that data wirelessly. • Firmware that converts those raw sensor readings into tidy, low-latency events the app can understand. • Simple proof-of-concept software (mobile or web) that shows the events, plays a sound or displays a visual so I can demo the core learning activities. I’m open on the exact platform; ESP32, Raspberry Pi Pico W or any microcontroller you feel suits a child-safe, low-power product will work. The finished prototype should be safe, responsive and easy to extend with new activities as the curriculum grows. Let me know which sensors, wireless protocol and development tools you prefer, how quickly you can deliver a working prototype, and any previous child-focus...
...software to life. On the hardware side, the priority is circuit design. I will share detailed functional blocks, power-budget targets, and regulatory constraints; you would translate these into a clean schematic that is ready for board layout (I will also welcome help on the actual PCB routing once the schematic is locked). For software, I need both the embedded code that will run on the microcontroller and the on-screen user interface logic that appears on the TV. Simplicity and reliability for elderly users are the guiding principles. You should feel comfortable choosing an appropriate MCU, writing efficient firmware in C/C++, and prototyping a straightforward, large-font on-screen menu in a framework that can later be ported to the final hardware. Please include links or br...
PCB design and firmware for microcontroller PCB design and firmware for microcontroller
...Electromagnetic (EM) tracking (NDI Aurora) with A-Mode Ultrasound (GE Piezo crystals + TI TX7332 Pulser + ADS1256 ADC). We have already architected the system and generated the V1.0 codebase. We need a Senior Embedded Engineer to perform a rigorous code audit, verify the hardware-timing logic, and map the C++ firmware to our custom PCB's pinout. The Tech Stack: 1. Firmware: Bare-metal C++ on an STM32 microcontroller (using STM32Cube HAL). 2. PC Software: Python 3 (PySerial, pyigtl/OpenIGTLink) communicating with 3D Slicer. Your Mandate (The Audit): We are providing you with three fully written files: , , and acuscope.py. We need you to verify the following critical failure points: 1. Timer Chaining & DMA Safety: Verify our STM32 logic. We are using Timer A to trigger a 1...
I’m developing a compact data-acquisition module and need a local electronics engineer in Austin who can take the mixed-signal front-end from concept to ready-to-fab documentation. The heart of the job is a clean, low-noise analog section feeding a high-resolution ADC, with the digital side handling basic buffering and a simple SPI or I²C hand-off to my existing microcontroller board. We’ll meet in person for the initial requirements review and again when hardware is on the bench so rapid tweaks are possible. I already have rough performance targets—sampling at 1Hz, 12–16-bit resolution, and a 12V single-rail supply—but I’m looking for your guidance on component selection, input protection, and clocking strategy to hit those numbers without ...
Project Brief: Stealth-Mod...product. • The functionality must be fully automatic. No user interaction should be needed after parking. • No visible alterations (e.g., wires, unusual controls, abnormal movement patterns). • Power should remain efficient — preferably still battery-powered or with a hidden upgrade that doesn’t draw attention. Ideal Freelancer Profile: I’m looking for someone with experience in electronics, microcontroller programming (e.g., Arduino), or embedded systems. Ideally, you’ve worked with consumer electronics, automotive modifications, or smart devices before. Both functionality and stealth are equally important for this project. ⸻ Let me know if you have questions or need specific details (such as device models). ...
I need help setting up a flow monitor that uses an ESP32 microcontroller device. This device needs to communicate with a Wi-Fi hub and send data to an app on both Android and iOS platforms. Requirements: - Communicate with a Wi-Fi hub - Send volume data per designated time period - Compatible with both Android and iOS apps Ideal skills and experience: - Experience with ESP32 and microcontrollers - Proficiency in Wi-Fi communication protocols - Mobile app development (Android and iOS) - Knowledge in data transmission and monitoring Please provide your past relevant work experience and approach to complete this task.
Project Brief: Stealth-Mod...product. • The functionality must be fully automatic. No user interaction should be needed after parking. • No visible alterations (e.g., wires, unusual controls, abnormal movement patterns). • Power should remain efficient — preferably still battery-powered or with a hidden upgrade that doesn’t draw attention. Ideal Freelancer Profile: I’m looking for someone with experience in electronics, microcontroller programming (e.g., Arduino), or embedded systems. Ideally, you’ve worked with consumer electronics, automotive modifications, or smart devices before. Both functionality and stealth are equally important for this project. ⸻ Let me know if you have questions or need specific details (such as device models). ...
Microcontroller PCB / schematics design in Altium
...workshop bench or a flat outdoor slab. • Simple indicators (LED or small display) showing charge status and fault alerts. Deliverables 1. 3-D CAD files and mechanical drawings ready for fabrication (metal parts, wooden base, acrylic cover). 2. Electrical schematic, PCB/stripboard layout, and connector pin-out for the two-pin charger. 3. Firmware or control logic outline for whatever microcontroller/PLC you propose to trigger the drag motor and manage charging. 4. A concise bill of materials with readily available components. Acceptance criteria • The dimensions and motion sequence in your design must mirror the video demo. • A quadcopter up to 350 mm wheel-base should align within ±2 mm of centre before charging starts. • Charger must ...
Project Title: 600VA Pure Sine Wave Offline UPS Design (STM32 Based) Project Description: We are looking for an experienced Embedded Hardware and Firmware Engineer to develop a 600VA Offline Pure Sine Wave UPS using STM32G030K6T6 microcontroller. We already have a working board. The requirement is to reverse engineer and redesign the same board properly for production with complete documentation and firmware. Technical Specifications: * Input: 230V AC, Single Phase * Output: 230V AC Pure Sine Wave * Battery: 12V 7Ah SMF * Topology: Transformer-based (Low Frequency) * Control: Fully STM32 controlled inverter logic Required Features: * Automatic changeover (Mains to Inverter) * Pure sine wave PWM generation via STM32 * 2-minute auto shutdown in backup mode * Low battery cutoff ...
...based around the Waveshare ESP32-S3-0-M development board. The project is already partially defined in , and you will be invited to collaborate directly within that workspace. Deadline: 10 calendar days from project award. This is a functional industrial I/O interface board powered from 24VDC systems, with opto-isolated inputs and high-side protected outputs. Core Architecture 1. Microcontroller Waveshare ESP32-S3-ZERO-M development board (preassembled module with headers) Must connect via through-hole headers or appropriate board-to-board connectors Clean mechanical layout allowing replacement/removal if needed 2. I/O Expansion MCP23017 I2C I/O Expander 6 digital inputs 6 digital outputs Digital Outputs (Industrial Grade) Each output must meet the following requirem...
I just need to remove a broken IC from a board and solder the new one
...rigid steel frame for durability, yet light enough to remain truly portable. • Quiet, sealed gear-motor driven by a rechargeable battery pack with enough capacity for a full shift. I need a freelancer who can translate this outline into a complete, ready-to-manufacture solution. The work spans mechanical design (3-D CAD, load calculations), electronics (motor driver, timer circuit or microcontroller, safety interlock, battery management), and embedded firmware that lets me tweak the hourly advance interval if required. Deliverables 1. CAD files and assembly drawings showing the steel chassis, spindle arrangement, and low-angle entry/exit ramps. 2. Electrical schematic, PCB layout, and firmware source code that runs the hourly advance sequence. 3. Motor and batter...
I already have raw .bin images that flash and run correctly on the Silicon Labs SI4010 RF transmitter, but I now need production-ready software that lets me interact with the chip over SPI from a host microcontroller. Here is where things stand today: • The hardware is proven, the SI4010 is wired for SPI, and I can load binaries through the existing programmer. • What is missing is the firmware layer (or host-side driver, if you prefer) that will expose reliable SPI commands so I can configure registers, inject payloads, and trigger transmissions programmatically. What I expect from you: 1. Clean, well-documented C (or C++) source that compiles in Simplicity Studio or any GCC-based toolchain compatible with the chip. 2. A concise header/API that my applicatio...
I am building an embedded feature around an MRS Electronics controller, part number 1.107.110.00, and I need clean, portable C firmware written specifically for this board. The code has to run directly on the microcontroller, so please follow embedded-system best practices: no dynamic memory, tight timing awareness, readable state machines, and clear separation between hardware-abstraction layers and application logic. I will provide the detailed register map and functional requirements after kickoff; however, expect typical tasks such as configuring peripherals, servicing interrupts, and exchanging data over the existing communication bus. Compile-time options must allow me to toggle individual features because the same image will later be scaled to multiple variants of this har...
Altium PCB design for microcontroller
I’m putting together a compact board and need a design that JLCPCB can fabricate without revisions. The core is a PIC microcontroller sampling six analog inputs; the data must leave the board through an isolated RS-485 link implemented with the TD551S422H. The outline will be approx 50 mm × 100 mm range. I will share the exact pin-out, input ranges, and connector locations once we start; everything else—from component selection inside the JLCPCB/LCSC ecosystem to trace impedance and isolation barriers—will be yours to define. Here’s what I expect at hand-off: • Schematic and PCB files • Gerber, drill, and pick-and-place files ready for JLCPCB upload • BOM with LCSC part numbers and any alternates you recommend If you’ve d...
...act as a standalone, fully featured audio module that can be entirely controlled by an external host microcontroller via a communication protocol (preferably UART). Core Features Required: Bluetooth Audio: Standard Bluetooth audio sink for streaming music from a smartphone/PC. USB Drive Playback: Ability to read and play MP3/WAV files from an attached USB mass storage device. FM Radio: Basic FM radio tuning and playback. External Host Control (UART/Serial): The AC6965E4 must act as a slave device and communicate with an external microcontroller. The protocol must support sending commands and receiving status updates. Serial Protocol / Communication Requirements: The external microcontroller needs to be able to fully control and query the audio chip. The protoc...
...vendor-ready documentation that lets my fabricator order parts and my electrician wire the cabinet without guesswork. Deliverables • Sizing calculations for each axis (mass, acceleration, duty cycle, safety factor) • Recommended motor/actuator part numbers with supplier links • Sensor suite and placement diagram for position, limit and safety feedback • Control architecture overview (PLC or microcontroller, I/O list, network protocol) • Basic wiring schematic and BOM in spreadsheet form • Short commissioning guide outlining homing routine and calibration steps I prefer common, widely-available components—think NEMA stepper or compact servo, ISO pneumatic slides, standard inductive or optical sensors—but I am open to your exper...
...is compatible with engineering, and that engineering is optimized for manufacturing. I need a single point of contact to orchestrate the entire workflow. Scope of Work (The Full Value Chain): 1. Concept Development & Industrial Design: 3D-ready design of SpongeBob, optimized for internal electronic housing (speaker, mic, battery). 2. Engineering & Electronics: Internal PCB design and microcontroller selection for voice interaction and AI integration. 3. Sourcing & Manufacturing: Technical drawings (DFM), factory sourcing, and quality control for both the plush exterior and electronic interior. 4. Logistics & Regulatory: Guidance on toy safety certifications (CE, FCC, ASTM) and global shipping logistics. 5. E-commerce & Marketing: Shopify/Amazon storefr...
...to a fully assembled, tested unit I can power up at home. Scope • Electronic design: Because I don’t yet have a schematic, I’ll need you to lay out the driver circuitry, choose the appropriate microcontroller, and size all supporting components such as resistors, capacitors, and power regulation. • PCB work: Produce the board files, have the boards fabricated (or guide me to a service), and populate them. • LED matrix assembly: Precisely solder all 4,096 RGB LEDs into a true-geometric cube, ensuring even spacing, correct orientation, and solid joints. • Firmware: Program the microcontroller so I can trigger patterns and colour sequences from an app or handheld remote. The interface can be Bluetooth, Wi-Fi, or another practical wirel...
...compact enclosure. The immediate priority is an accurate 3-D layout of the internal layout with optical paths, small heater block snd selection of specific critical components that impact the CADD layout. This is so I can confirm the design, space claims and streamline the optical path before committing to electronic design as a later stage. Design to include: • Core electronics: a low-power microcontroller, USB-C for power/basic comms, two I²C temperature sensors, two analog light sensors, four momentary buttons, a four-position DIP switch, status/power LEDs, and a 2 W resistive heater bonded to a 1 cm³ aluminum block (max 70 °C). • Outputs: 2-inch display plus the LEDs and heater. • Inputs: the sensors and buttons listed above. • Mechani...
We are developing a commercial embedded product based on an STM32U5 microcontroller running TouchGFX for the GUI and, alongside an ESP32-S2 responsible for WiFi connectivity and OTA updates. The ESP32 downloads firmware from a server and transfers it via UART to the STM32, which then performs a firmware update through a custom bootloader mechanism. Our hardware is currently in development, and we are looking for a highly experienced embedded firmware engineer who can take full technical ownership of the firmware architecture and development as a long-term partner. This is not a short-term debugging task or small assignment; we need a dedicated engineer who understands production-grade embedded systems, robust OTA implementation, bootloader design, flash partitioning, memory mana...
Am seeking a professional PCB designer to create a custom hardware interface for the remote management system. This board will bridge a home server's motherboard with an ESP32 microcontroller, allowing for remote power/reset control and real-time status monitoring via a web dashboard. The project focuses on physical isolation and redundancy: the board must allow the existing PC case buttons to function in parallel with the remote commands while ensuring the PC’s electrical system is completely isolated from the controller using optocouplers. Scope of Work PCB Design Only: You are responsible for the schematic capture and PCB layout (Gerber files, BOM, and Pick-and-Place files). No Firmware/Software: No coding is required for this milestone; I will handle the ESP32 progr...
...line, so please include an efficient buck stage, reverse-polarity and surge protection suitable for outdoor installations. Deliverables: 1. Schematic and PCB layout (Altium, KiCad, or similar) ready for fabrication. 2. Complete BOM with part numbers, availability notes, and suggested enclosure connectors. 3. Brief design note outlining current budget, USB data routing strategy, and any microcontroller or hub IC configuration required. 4. Test procedure I can follow to confirm the board powers the sensor solo and streams data when the laptop is attached. No fancy extras are needed—robust power regulation, reliable USB data integrity, and outdoor-friendly design are the priorities....
Boxing Speed & Reaction Time Trainer (Wokwi Project) I just built a Boxing Speed Test Simulator using Wokwi — a browser-based microcontroller simulator that lets you prototype and test circuits without physical hardware. This project is designed to give a simple reaction time training setup inspired by how boxers measure punch speed and reflexes: -> Random light cues appear on LED indicators -> You have to press the correct button as fast as you can -> Time and accuracy feedback is printed to the serial monitor Why this matters: In boxing, faster reaction time and correct hits dramatically improve performance — hitting first and accurately can change the outcome of a bout. How it works: • Four LEDs light up in a random order • The user must ...
