Мікроконтролер Jobs

I have a go-kart project that uses two separate BLDC motors and I need them both running flawlessly through a VESC-based controller and a handheld remote. Your prior, hands-on experience with VESC firmware, toolchain and hardware integration is critical here—I’m not looking for first-timers. Scope • Advise on the most suitable VESC hardware (single dual-channel unit vs. two singles) and remote model for independent motor control. • Generate and load the correct firmware, map receiver channels, and tune current, RPM and throttle curves so that each motor responds smoothly and in sync. • Provide a clear wiring diagram, recommended fuse ratings, and safety interlocks. • Walk me through the VESC Tool settings, so I can tweak limits later. • Optiona...

I'm in need of a seasoned professional with extensive experience in drone development, particularly in firmware customization using PX4 and ArduPilot. The focus of this project is on integrating specific sensors and customizing communication protocols. Key Requirements: - Deep understanding and experience with PX4 and ArduPilot firmware - Proficient in customizing firmware for sensor integration and communication protocols - Experience with integrating LIDAR and servo motor sensors Ideal Skills: - Firmware customization - Drone hardware integration - Communication protocols customization

For a Spanish speaker in Barcelona! I am bringing together a compact laser platform and an FPGA-based control board here in Barcelona, and I need an engineer who can sit beside the hardware, plug in the scopes and power rails, and push the overall performance to its limit. The work is squarely at the crossroads of optics and digital electronics: you will be aligning the laser path with a set of optical sensors, tightening the signal chain that feeds the onboard FPGA signal processors, and making sure the power supplies deliver exactly what the photonics and the logic fabric demand—no more, no less. What I expect you to drive: • Physical and electrical integration of the laser module with the FPGA board • Low-noise routing between optical sensors and high-speed signal...

I am automating a three-pump pressure-boosting skid and have chosen a Delta PLC paired with a Delta DOP-series HMI plus a single VFD that will rotate between the pumps. The job covers the full PLC logic and matching HMI screens. System requirements • Three pumps share one VFD. Each pump needs on/off sequencing, variable-speed capability through the drive, and individual fault monitoring (overload, dry run, VFD trip, etc.). • Duty/stand-by rotation adjustable from the HMI. • Lead/lag logic must maintain set-point pressure with PID control in the PLC. • Delta HMI should show real-time water-pressure values and clear pump status/alarms; space can be reserved for future energy-consumption data. • Manual mode with local start/stop, plus auto control from the ...

We are looking for an experienced electronics / embedded hardware freelancer to help assemble and test 5 pilot units of an ESP32-S3 based IoT mini controller. The PCB/PCBA boards are already designed and manufactured by JLCPCB. The firmware file is also ready. This project is not for PCB design and not for firmware development from scratch. The main task is physical assembly, firmware flashing via USB-TTL, and basic bench testing. The final goal is to prepare 5 working pilot units in the correct order: Milestone 1: Assemble, flash and test 1 pilot unit first. Milestone 2: After the first unit is validated successfully, assemble, flash and test the remaining 4 units using the same process. Scope of work: * Mount the PCB/PCBA into an IP65/IP66 enclosure * Connect the external Wi-Fi an...

I need a precise, low-resistance solder joint made on the battery leads of my drone. The task is straightforward: take the existing electrical wire coming from the battery pack and solder it securely to the designated battery connection pads/connector on the airframe. A clean, shiny joint with proper strain relief is crucial so the connection can handle both current spikes and the vibrations that come with flight. Bring whatever tools you feel most confident with—a temperature-controlled iron, fine rosin flux, decent solder (60/40 or lead-free is fine if you’re comfortable), and heat-shrink tubing for insulation. Once the joint is complete, I’ll do a quick continuity and voltage drop test; as long as it passes and looks solid, the job is done. If this is something you c...

I have just purchased my neighbour’s central air-conditioning system and need a qualified HVAC professional to handle the entire transfer. The unit must be carefully dismantled at the neighbour’s property, moved next door, and fully installed at my single-family home. Once in place, I also want it tested, charged if necessary, and given a quick maintenance check so I know it is running at peak efficiency. You will receive the exact brand and model details upfront so you can bring the right fittings, line-set length, refrigerant, and electrical hardware. The two houses sit side-by-side with unobstructed driveway access, which should make transport straightforward; however, I still expect proper recovery of any remaining refrigerant, safe handling of electrical connections, and ...

I need a complete electrical and mechanical design for a Framework Laptop expansion card built around the RP235xA microcontroller in the 30-GPIO QFN-60 package. My top priority is that everything fits perfectly inside the standard expansion-card envelope defined in Framework’s official repository (). Key requirements you must hit • Use the RP2350 and expose all USB-C power and signal constraints exactly as the Framework reference dictates. • Keep the card flush: no part of the PCB, component or connector may project past the official boundary. • Place two tactile switches (reset and boot) plus one RGB LED (I’m thinking WS2812 or equivalent) and one status LED on the underside so they are visible and accessible when the card is plugged into the laptop. ...

I have a university automation assignment due on 22 June that revolves around Siemens NX Mechatronics Concept Designer linked to TIA Portal. Rather than wrestle with my half-finished model, I’m open to whichever path gets a reliable result fastest—either salvaging the current files or standing up a brand-new virtual station. Core requirements • Build a small station in NX MCD that includes sensors, actuators and a clear behaviour sequence. • The primary manipulation task must be cylinder actuation; if a second motion makes the logic easier, we can discuss. • Create the matching PLC program in TIA Portal, test it in PLCSIM and prove the handshake between the two environments. • Deliver a working simulation that meets the course rubrics and can be dem...

Saya sedang mengembangkan mainan pesawat bertenaga solar cell (2 V DC / 55 mA) dan memerlukan referensi micro motor DC ber-stall current rendah yang benar-benar bisa berputar dengan pasokan sekecil itu. Detail kebutuhan: • torsi & kecepatan tidak penting—yang utama motor mau start dan berputar stabil. • Motor DC harus kompatibel dengan ukuran solar cell yang sudah saya miliki. • Ya, harus sangat kecil; diameter dan panjang total tidak boleh melebihi motor bawaan di lampiran. Yang saya harapkan Anda kirim: 1. Daftar minimal 5 kandidat micro motor DC dari Alibaba atau marketplace global lain (AliExpress, Mouser, Digi-Key, dsb.). 2. Untuk tiap kandidat: link langsung ke produk, datasheet atau lembar spesifikasi, tegangan kerja, arus no-load dan stall, ...

ESP32 Bluetooth-Enabled Umpire Indicator Prototype with Rotary Encoders (BLE Sync to Mobile App) *We have two full time App developers that you can work with. Project Description: Seeking an experienced embedded systems engineer to develop a functional prototype of a Bluetooth Low Energy (BLE) digital umpire indicator for slo-pitch softball. Reference: See attached image of standard Champion 4-dial indicator (Balls, Strikes, Outs, Innings). Requirements: • Replicate tactile dial feel using rotary encoders (notched/clicking action for no-look operation). • ESP32 (preferred) or equivalent microcontroller with BLE to transmit real-time count updates (balls/strikes/outs/innings) to a mobile app. • Device pairs with our existing slo-pitch live-streaming + scoring app and up...

ESP32 firmware for an experimental, battery-powered maker devkit (SyncStim) that plays a 10 ms audio burst and, at a configurable interval, fires a charge-balanced biphasic constant-current electrotactile pulse train (plus an LED cue). The core requirement is timing fidelity and safe constant-current output, verified on an oscilloscope. Hardware is already specified (BOM): ESP32-WROOM-32D, MAX98357A I2S amplifier, DRV8871 H-bridge, DC-DC boost converter, LM334 constant-current source, current sense, SD card. Battery-powered and mains-isolated. Behavior: repeats a 200 ms cycle (5 Hz). Each cycle is a 10 ms audio burst over I2S, then after a configurable inter-stimulus interval, a burst of 3 biphasic pulses (150 microseconds per phase, 1 ms onset-to-onset), constant current, under 3 mA, ch...

I am building a small system that will ride on a vehicle and needs smart power and signal management. Two of the three loads are a Camera and a Transmitter; the third is still open for discussion once the basic framework is proven. An Arduino-class board running Python (CircuitPython or MicroPython is fine) will sit at the center of the design. Core behaviour • A proximity sensor with a simple NO/NC or other switched-DC output tells the microcontroller when the vehicle is near its target. On that event the code must turn the devices on or off, make or break the live analog video path, and if required trigger visual or audible alerts. • A vibration/accelerometer module tracks motion. When the vehicle has been still for a preset timeout the controller should cut power to all t...

I have a concept for a small control board that will act purely as a communication interface; the brain must be a microcontroller and every line on the board will ultimately speak SPI. I need the complete journey covered—from schematic capture through to a working prototype—and a simple companion application that can configure, send, and read data over that SPI bus. Hardware I want you to select an appropriate MCU, lay out the PCB, generate the BOM, and produce production-ready Gerbers. The board will only need the essentials: power regulation, the MCU, an SPI header, and whatever discretes are required for reliable signalling. Options such as UART or I²C might be added in a later revision, so leave enough pins and routing headroom for that future expansion. Firmware ...

I'm looking for an experienced firmware developer to work on an ESP32 microcontroller. The project involves integrating Wi-Fi connectivity and sensor integration for electricity monitoring. Key Requirements: - Develop firmware for ESP32 - Implement Wi-Fi connectivity - Integrate various sensors for monitoring electricity usage - Ensure reliable data transmission and system performance Ideal Skills and Experience: - Proficiency in ESP32 and related development environments - Strong background in firmware development - Experience with Wi-Fi protocols and sensor integration - Knowledge of electricity monitoring systems Please provide relevant work experience and approach to the project.

I’m building a tiny monitoring node around an ATTiny85 that has only four external components: a single LED, an NTC thermistor, a Hall-effect sensor and a piezo buzzer. I need clean, memory-efficient Arduino-style C/C++ code that: • Samples the thermistor, converts the reading to temperature and classifies it into three adjustable ranges. • Drives the lone LED so the user can tell at a glance which range we’re in (for instance OFF below the first threshold, slow blink in the middle, fast blink above the second threshold—but I’m open to any pattern that is easy to recognise). • Activates the buzzer whenever the temperature crosses the high-temperature limit and keeps it on until the reading falls back below that limit. • Reads and debounces...

I need a PCB design for a Graphene-based FET sensor readout system. The PCB should facilitate I-V characterization of GFETs by sweeping gate voltage (0-3V) and measuring current or resistance between source and drain. Key requirements: - Size: Medium (4x4 inches) - Interface: Connector terminals preferred - Component Inclusion: Partial component list available, open to recommendations Ideal skills and experience: - Expertise in PCB design - Experience with GFET or similar sensor technologies - Familiarity with I-V characterization setups - Knowledge of various electronic components and their integration

I’m working with a Phoenix Contact RFC430 PLC that communicates over MODBUS RTU. From the raw frames it returns, I only need two things: the current status information and any embedded error codes. You can approach this as a lightweight CLI tool, a small cross-platform utility, or a well-documented library in Python, C#, or another language you’re comfortable with—as long as it reliably ingests hex-encoded RTU frames and outputs clean, human-readable values. My typical workflow is to capture traffic with a USB-to-RS485 adapter, save it as a hex dump, and feed that file into the parser. The program should automatically identify the relevant registers, decode them, and highlight any error bits or fault codes defined by Phoenix Contact for the RFC430. Deliverables: &b...

PCB Design Requirement Document Project: ARC LABS Smart Home Automation Controller About Us ARC LABS is an IoT and Embedded Systems company focused on developing commercial smart home and Industrial IoT products. We are looking for an experienced PCB designer who can help us develop a production-ready smart home controller PCB. ⸻ Project Scope Design a compact, reliable, and manufacturable PCB for a WiFi-based Smart Home Automation Controller. The PCB should be suitable for commercial production and comply with standard PCB manufacturing guidelines. ⸻ Hardware Requirements Main Controller * ESP32-C3 or ESP32-S3 (preferred) * USB Type-C programming interface * Auto reset and auto boot circuitry Power Supply * 230VAC to 5V isolated SMPS * 5V to 3.3V regulator * Over-voltage and ...

Hello, I am currently off-grid with a 8.85kw solar array and an incapacitated SolarEdge Inverter. The contractor that did the installation back in 2019, not only put in an earlier model of the inverter, but assured me that it would work with a battery back up in the event of disconnection from the grid, which it does not. I found this out when Duke Energy disconnected me after raising their rates and somehow setting me up to be in their debt rather than they in mine (I over produce a lot). This, after returning from being months away taking care of my elderly mother after an operation. I am looking to take a more do it yourself route this time, with a new inverter and battery installation (I will buy the equipment after we consult on viability, price, etc.). This, with an electrician that ...

I have a PIC-based controller receiving Modbus RTU traffic and I need to pull meaningful, human-readable information out of those frames. The transport layer is already running and CRC checks are in place; what is missing is a compact, well-structured decoder that can sit inside my existing project and translate function codes, addresses, and payloads into variables the rest of the firmware can use. Your job is to write and supply code that runs on a PIC (XC8 / MPLAB X tool-chain) and: • Parses incoming Modbus RTU frames in real time. • Supports at minimum function codes 03, 04, 06 and 16, with a clean way to extend to others. • Exposes the decoded data through a simple API or callback so my application layer can consume it immediately. • Handles error responses...

I need an experienced embedded developer to build the firmware modules that will turn an STM32H743 board into a reliable, high-speed data-acquisition unit. The focus is on two core capabilities: 1) pulling samples from the microcontroller’s own Internal ADC at the highest sustainable rate, and 2) performing first-stage signal processing so that the raw stream is converted into clean, time-aligned data ready for higher-level analytics. The code must expose clean, interrupt-driven or DMA-backed APIs for the following interfaces: UART, SPI, I2C and an “Adc high speed” path that moves samples straight from the ADC to RAM with minimal latency. Please write everything in C/C++ using STM32CubeIDE (or compatible Makefile flow) so it drops straight into our existing build system....

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I aim to develop a solution that will facilitate data communication between an Arduino UNO and a SIM7600E using AT+COMMAND. The primary data in focus will be temperature sensor readings. Key Responsibilities: - Setting up a reliable connection between Arduino UNO and SIM7600E - Implement AT+COMMAND for effective communication - Design a protocol for transmitting temperature sensor data Ideal Skills: - Solid knowledge of Arduino - Proficiency in handling SIM7600E - Experience in implementing AT+COMMAND - Understanding of sensor data transmissions. Please ensure you can efficiently deliver on these requirements, and provide the mentioned sensor data communication before placing your bid.