Microcontrolador Jobs

Quiero llevar mi nevera de maduración al siguiente nivel con un controlador Arduino que mida y gestione tres variables críticas: temperatura, humedad y concentración de gases. Los valores deberán mostrarse en una pantalla LCD y, si alguno sale de los rangos que definiré, se activará una alarma sonora y encenderá-apagar un sistema de ventilación para restablecer el ambiente ideal. El ajuste de los parámetros será totalmente manual mediante botones físicos en el frontal; nada de apps ni control remoto. El objetivo es mantener el sistema sencillo y robusto. Qué necesito de ti • Código Arduino bien comentado (C/C++ en Arduino IDE) que lea sensor de temperatura, sensor de humedad y sensor de ga...

# ESP32 NFC Audio Player Firmware Development (Children's Audio Box) ## Project Overview We are developing BAYANI, a screen-free educational audio box for children inspired by products such as Toniebox. The hardware platform already exists and includes: * ESP32 * NFC reader (PN532 or compatible) * MicroSD card * Audio DAC (I2S) * Audio amplifier * 3 control buttons * LED indicators * Li-Ion battery * USB-C connection At this stage, we are looking for an experienced embedded firmware developer to create the V1 firmware. --- ## Firmware Features Required ### NFC Figurine Detection * Detect NFC figurine placement * Read NFC UID * Associate UID with audio content * Start playback automatically when a figurine is placed ### Playback Control * MP3 playback from microSD card * Pla...

# Optimization of Stepper Motor Control for a Low-Power Thermostatic Radiator Valve ## Project Context We have developed a working electronic product that uses a stepper motor to actuate a thermostatic radiator valve. The product is battery-powered and uses an STMicroelectronics STSPIN motor driver. The product is already functional, but we would like to improve its energy efficiency and its behavior when the batteries are weak. Benchmarking against similar products on the market shows that our current solution could be optimized, especially regarding the trade-off between power consumption, available torque/thrust, and movement reliability. We are looking for an experienced freelance engineer in embedded electronics, stepper motor control, and low-power optimization to support us on a...

I have a Tears of the Kingdom-edition Nintendo Switch OLED that I’d like professionally modded with an RP2040 Picofly. The console is still fully assembled, so the job will include the complete teardown, precise flex placement, micro-soldering of the RP2040 points, clean reassembly and a quick power-on test to confirm the payload boots correctly. The Picofly itself isn’t in hand yet—I’m happy to source it or reimburse you if you prefer to bring your own module, whichever makes the workflow smoother on your side. I’m a total beginner with a soldering iron, so I’m counting on your experience to keep the board safe, prevent lifted pads and leave the install looking as close to factory as possible. Deliverables: • My Switch OLED returned fully working...

I'm seeking an experienced hardware designer to create and manufacture a face recognition-based attendance terminal. The system should be built on the 8M Plus from NXP and run on a Linux platform. Key Requirements: - 5-inch color LCD touchscreen - Dual-camera setup (RGB + IR) for live face detection - LAN and Wi-Fi connectivity - Advanced encryption for high security - 4G and 5G module integration from qua tel - Input and outputs for Access control - Card Reader - Built-in battery back-up Ideal Skills: - Experience with NXP processors - Proficiency in embedded Linux-based systems - Knowledge in camera integration and security protocols - Hardware design and manufacturing experience - Designing the drivers and firmware with UI design experience Please provide a portfolio showcas...

I have two BLDC motors running on VESC-based controllers and I need them responding smoothly to a radio-frequency hand-held remote. The goal is true “tank style” drive: forward, reverse, pivot left or right, plus proportional speed and braking on each trigger. Here is what I still need done: • Bind and map the RF receiver to both VESCs so every channel on the remote translates cleanly to speed, braking and direction. • Set safe current limits, regenerative and active braking parameters, and be sure neither motor over-currents under stall conditions. • Calibrate RPM and refine torque curves so the response is even across the whole throttle range. • Synchronise the two controllers over CAN so they act like one power-train without cogging or desync a...

Control VESC-based motor control system, including BLDC motor setup, remote control integration, motor tuning, current limiting, braking configuration

I’m building a consumer-grade entertainment device whose flagship feature is smooth, responsive gaming support. I need an embedded systems engineer who can take the idea from concept to working prototype, covering hardware selection, board design, firmware, and performance tuning so the final unit feels console-class in a much smaller, cost-effective form factor. Core requirements • Craft the hardware architecture around an SoC or high-performance MCU that delivers reliable gaming performance without exceeding a 5 W power envelope. • Produce schematics, BOM, and a production-ready multi-layer PCB. • Write and optimise the firmware or RTOS layer that boots quickly, handles user input, and drives audio/video output at 60 fps or better. • Build in easy hooks...

Hello, Phase Zero PCB Feasibility Review for Secure Hardware Wallet Before starting the full PCB design, I would like to do a Phase Zero feasibility review to confirm whether you can professionally complete this project. I am building a one-board secure Bitcoin hardware wallet prototype. Core hardware stack: - 2x Renesas RA8M1 R7FA8M1AHECFB#AA0 - Microchip TA101 secure signer - NXP SE052F secure element - ID Quantique IDQ6MC1 QRNG - DS28E38 authenticator / anti-clone chip - Sharp LS027B7DH01A Memory LCD - USB-C, microSD, LiPo charger, buttons, tamper switch, external SPI flash For Phase Zero, I am not asking you to design the full PCB yet. I need a review of the BOM, architecture, pin assignments, power tree, and manufacturability risks. Please confirm if you can review and deliver: ...

Saya membutuhkan seorang ahli KiCad untuk membantu saya merancang dari nol sebuah skema elektronik sekaligus layout PCB berbasis mikrokontroler. Skema awal belum ada, jadi pendampingan dimulai sejak pemilihan komponen hingga penempatan jalur. Kebutuhan inti: • Mikrokontroler sebagai pusat sistem • Fitur komunikasi lengkap (USB, UART, SPI, I2C) Ruang lingkup pekerjaan: 1. Diskusi singkat untuk menentukan mikrokontroler yang paling sesuai. 2. Pembuatan skema elektronik di KiCad dengan semua jalur komunikasi aktif. 3. Layout PCB satu–dua layer yang siap produksi, memperhatikan ukuran praktis dan aturan DRC. 4. Penyusunan BOM beserta link pembelian komponen. 5. Ekspor berkas produksi (Gerber, drill file) dan file proyek KiCad lengkap. Bila Anda melihat perlunya...

Saya membutuhkan skematik rangkaian lengkap berbasis ESP32 untuk proyek sistem monitoring yang sedang saya kembangkan. Fokusnya hanya pada pembuatan skematik—belum masuk ke layout PCB atau file Gerber. Ruang lingkup: • Menyusun diagram elektrik yang mencakup ESP32, sensor-sensor utama, rangkaian catu daya, dan konektivitas dasar (USB, pin header, atau terminal blok sesuai kebutuhan). • Memastikan tiap net diberi label jelas agar mudah di-route pada tahap berikutnya. • Menyertakan daftar komponen (BOM) sederhana dengan nilai, footprint, dan referensi part umum. • Melakukan pengecekan DRC pada skematik untuk menghindari kesalahan sambungan sebelum saya lanjut ke tahap layout. Saya biasa bekerja di EasyEDA, jadi saya menginginkan file asli (.json) plus PDF ekspor a...

Saya sedang mengerjakan perangkat berbasis elektronika dan membutuhkan bantuan untuk merancang PCB dua layer lengkap dengan skematiknya. Fokus utamanya adalah memastikan tata letak rapi, jejak sinyal bersih, serta file Gerber siap produksi tanpa revisi berulang. Apa yang saya perlukan: • Skematik yang jelas dan terdokumentasi. • Layout PCB dua layer dengan penempatan komponen optimal untuk mikrokontroler, sensor, atau sistem kontrol sejenis. • File produksi: Gerber, BOM, dan file CAD asli (Altium, KiCad, atau sejenisnya) agar pabrikan langsung bisa mengeksekusi. • Sedikit panduan desain-for-manufacturing (jika ada batasan lebar jalur, jarak pad, atau via) supaya proses cetak lancar. Saya menghargai komunikasi terbuka—silakan ajukan pertanyaan teknis, saran...

I need assistance getting Squareline Studio to work with Arduino IDE on a Waveshare 7-inch board. My libraries are messed up, and I'm encountering compilation errors due to missing libraries and what not. Set up my first own project so I can work on it in Square line studio and transfer to Arduio IDE. Key Tasks: - Using Windows 10. Done! - Install Square line Studio 1.6.1. Done! - Maybe want to use Eez studio instead since it is free. It is also installed already. - Install Arduino IDE 2.3. Done! - Use correct folder for IDE .ino files. - Setup Square line Studio and export project to correct folder. - Compile a sample project successfully. Waveshare board to use: ESP32-S3-Touch-LCD-7B with touch. Ideal Skills & Experience: - Experience with Arduino IDE and Waveshare boards...

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 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.