Resolve Meteo40 Modbus Timeout
I have an Ammonit Meteo 40-v1 datalogger that refuses to read an RK200 pyranometer on its RS-485 line. Wiring continuity has been checked end-to-end, the sensor...
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Teensy 4.1 One-Cycle FSK
I’m building a proof-of-concept transmitter that must output a single, precisely timed cycle of FSK per data bit on a Teensy 4.1. The bit stream is stored exact...
Read morePIC MCU Hardware Control Firmware
I have a PIC micro-controller board that needs robust, production-ready(mass production) firmware focused on hardware control. The project centres on driving se...
Read moreBLE Scale Firmware Revamp
I have the BLE bathroom scale sold at the link above and need its firmware overhauled. The original source is not available, so the first task is to extract and...
Read moreGBA/GBC Cartridge Reader PCB Design
I have a half-finished KiCad project for a very small board that will plug a Game Boy Color / Game Boy Advance 32-pin cartridge into a Raspberry Pi (or similar...
Read moreArduino & Python Developer for RFID Interactive System
Project Description: We are looking for an experienced Arduino and Python developer to build an RFID-based interactive podium system. This project combines hard...
Read moreSTM32H725 Firmware Development
Embedded Firmware Developer Needed – STM32H725 (FreeRTOS, LwIP, LittleFS) – Stabilisation + Feature Completion Project Summary I am building an embedded product...
Read moreConvert JLC EDA (open source) project to KiCad
Convert JLC EDA (open source) project to KiCad
Read morePrototype-Ready Mini PCB Design
prototype PCB design. Looking for experienced kicad fella.
Read moreHalf-Bridge Converter Circuit Design & Simulation
Consider the half-bridge converter given in the figure below with parameters L = 690 μH, R = 5 mΩ, VDC/2 = 600 V and Vs = 400V. Perform the following for this h...
Read moreProgram Innotech Omni HVAC Controller
I need the control logic on a commercial HVAC installation rewritten and commissioned on an Innotech Omni proprietary controller. The focus is temperature contr...
Read moreLock Board Hardware Integration
I need firmware and accompanying host-side code that speaks the existing Lock Board Protocol so a central controller can trigger a locker door and know, in real...
Read moreUSB-C PD Hub PCB Design -- 2
I’m ready to move from concept to production on a compact USB 3 hub built around a USB-C upstream port with full Power Delivery negotiation. The board will be c...
Read moreCross-Platform Drag-and-Drop Arduino IDE
I need a stand-alone drag-and-drop Arduino editor for my lab that mirrors, and ideally improves upon, the visual experience offered at EduKits.co. The applicati...
Read moreNTR08 LoRa Transceiver Module Driver (STM32)
We need a clean, STM32-friendly driver for the NTR08 Series LoRa Transceiver Module (SX1262 based) and a small demo that shows two modules can talk. Everything...
Read moreAutomatic TP5100 Charge Cutoff Circuit
I’m using a 2-cell Li-ion pack (8.4 V full, 7.4 V nominal) with the TP5100 charging module and I need an add-on circuit that will: • Drop the adapter input the...
Read moreArduino Basics & Coding Lessons
explain how each is to be done
Read moreArduino Touchless Sanitizer Prototype
I’m putting together a compact, battery-powered hand-sanitizer station driven by an Arduino UNO. An ultrasonic sensor will sit at the front and, as soon as it s...
Read morePortable Electronic Time-Stamping Device Prototype
Project Summary I need a complete design and working prototype of a portable automatic time-stamping device. The idea is to combine a mechanical numbering stamp...
Read moreUSB-C PD Hub PCB Design
I’m ready to move from concept to production on a compact USB 3 hub built around a USB-C upstream port with full Power Delivery negotiation. The board will be c...
Read moreMotion-Detecting Anti-Suicide Fan
I’m putting together a small proof-of-concept fan that shuts itself off the moment motion is detected near the blades, demonstrating a simple yet effective anti...
Read moreBattery Anti-Suicide Fan Prototype
I need a compact, battery-powered working model of an anti-suicide ceiling fan made primarily from plastic. The unit must demonstrate how the fan instantly stop...
Read moreBattery Anti-Suicide Fan Prototype -- 2
I need a compact, battery-powered working model of an anti-suicide ceiling fan made primarily from plastic. The unit must demonstrate how the fan instantly stop...
Read more15 kW Bidirectional DC-DC Design
I am developing a 15 kW bidirectional stage that links a 400 V DC bus to a 0-330 V 40 ADC battery load. We want to use the Texas Instruments LM5171 controller....
Read moreHoneywell SCADA Implementation for Oil & Gas Terminal
I need an experienced professional to implement a Honeywell SCADA system for controlling terminal automation at an oil and gas terminal. Key Requirements: - Con...
Read moreBarometric Altimeter with PCB
I'm looking for an experienced developer to program a barometric and accelerometer-based altimeter and design its PCB. The altimeter needs to have the following...
Read moreTFT Touchscreen UI & Setup
I have a standalone TFT touch display that has to power-up cleanly, register every tap, and present a small but polished interface. The job covers three connect...
Read moreArquitetura de Processador MIPS 32-bits
Aqui está uma sugestão de descrição de projeto, otimizada para publicação em uma plataforma como a Freelancer.com, com base no documento que você forneceu. Títu...
Read moreEmbedded Linux AI Firmware
We’re seeking a firmware engineer experienced in embedded Linux and hardware-level programming to help build the system firmware for our next-generation AI acce...
Read moreESP32 based Custom PCB development
Need a simple PCB designer using ESP32 kicad or any Cad Schematics and PCB development using ESP32, reading only few digital and 6 analog inputs.most of the dra...
Read moreDelta PLC Chute Panel Programming
I need a brand-new ladder program written for a Delta DVP12SA211R PLC that will run a chute panel on our line. I already have the electrical drawings and the or...
Read moreRaspberry Pi Attendance Device PCB Design
I'm looking for an experienced PCB designer to create a custom PCB for a Raspberry Pi-based attendance device. The PCB should be able to integrate the following...
Read moreVoice-Only AI Device Prototype
Summary Project Overview We are seeking a hardware engineer to develop an AI powered, voice only conversational prototype device designed for users with severe...
Read moreMicroController Debugger
I want to make micro controller sniffer which can sniff data passing through the channel RX-TX or SPI or I2C to debug issue of data loss, poor connection betwee...
Read moreDwin HMI & MCU Integration
I’m putting together a small control-and-monitor unit centered on a DWIN DGUS HMI and I’d like you to handle both the screen layout and the firmware that talks...
Read moreArduino-to-STM32 HID Port
Hello, I would like to commission the porting of existing code (200 lines) written in Arduino IDE (ATmega32u4) to an STM32CubeIDE project (STM32F103C8x). I requ...
Read moreUSB-C Hub Prototype Development -- 2
Project Title: Active USB-C Hub Prototype Development Location: Remote (Immediate Start) Engagement: Contract (Project-based) Start Date: Immediate Duration: 2–...
Read moreBluetooth-Controlled Wearable Prototype (Confidential Design)
I’m building a compact, battery-powered wearable that pairs a BLE-enabled microcontroller with several low-frequency coil drivers. The core of the job is to tur...
Read moreBluetooth Water Sensor System
I'm looking for a device that can detect water and send a signal to another device to activate a motor. Requirements: - A water sensor (preferably a float switc...
Read moreSTM32 Embedded System Development -- 2
I need an experienced developer to create an embedded system using the STM32F411CEU6 microcontroller. The project is digital output using amplifier. Key Require...
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