Microcontrolador Jobs

I’m building an industrial-grade robotic setup and need a sharp embedded-systems mind to move the control electronics from concept to reliable hardware-in-the-loop operation. The work centres on firmware that drives motors, interprets sensor data and communicates over CAN bus or OBD-II–style diagnostics. Most of the prototyping will happen on Arduino or ESP32 boards before we freeze the design onto a custom PCB, so familiarity with Altium Designer or KiCad for schematic capture and layout is essential. Here’s how I see the collaboration flowing: • Translate high-level motion requirements into C/C++ firmware with clean, well-commented code. • Select, integrate and tune motor drivers, encoders and safety interlocks so the robot meets industrial-speed repeatab...

I have an Allen-Bradley CompactLogix processor installed at my facility in Ridgefield, NJ 07657 and I need a ladder-logic program that fully automates our conveyor line system. The goal is straightforward: once the operator presses START the line should sequence itself, react to its sensors, and shut down safely on faults or an E-Stop, all while remaining easy to troubleshoot. Hardware and software already on hand: 1- allen bradley 5069 l330er • CompactLogix controller with standard 24 V DC I/O cards • A mix of photo-eyes, limit switches and VFD-driven motors • Studio 5000 Logix Designer for programming What I expect from you • A clean, well-commented .ACD project file written in ladder logic • Tag database and I/O map that match my wiring • Brief...

More details: What type of electrical project do you need a cost estimation for? Commercial What information should successful freelancers include in their application? Past work What specific aspects of the commercial project do you need cost estimation for? Full class B cost estimation

I have a Particle Boron and want it turned into a small proof-of-concept that watches two reed switches and a single split-core current transformer. Whenever either switch changes state or the CT reports a reading outside user-defined limits, the Boron should push an SMS straight to my phone. Please build the firmware, wire the sensors, and set up the cellular messaging so the text includes three key pieces of information whenever a condition is met: the live state of each reed switch, the measured current, and a timestamp noting when the limit was crossed. I also need your guidance in deciding the actual thresholds for both the switches and the current transformer, so factor parameter-setting into the workflow. A concise wiring diagram, commented source code ready for Device OS, and a q...

I have a piezo-based wet/dry sensor concept that relies on tracking resonance changes in a PZT ceramic between 20 kHz and 500 kHz. When the tip is in air the vibration is high-Q with a large voltage swing; when any liquid covers it the amplitude drops, the Q-factor falls, and both phase and resonant frequency shift. I now need an electronics specialist who can turn this working principle into a repeatable, field-ready solution. The job covers selecting the drive topology, designing the analog front-end, and implementing a small digital section that continuously excites the ceramic, samples the returning signal, and decides “wet” or “dry” in real time. Accuracy, low noise, and robust thresholding against temperature or viscosity changes are essential. Delive...

I have a Particle Boron and want it turned into a small proof-of-concept that watches two reed switches and a single split-core current transformer. Whenever either switch changes state or the CT reports a reading outside user-defined limits, the Boron should push an SMS straight to my phone. Please build the firmware, wire the sensors, and set up the cellular messaging so the text includes three key pieces of information whenever a condition is met: the live state of each reed switch, the measured current, and a timestamp noting when the limit was crossed. I also need your guidance in deciding the actual thresholds for both the switches and the current transformer, so factor parameter-setting into the workflow. A concise wiring diagram, commented source code ready for Device OS, and a q...

The objective of this project is to develop a underwater mechanical scanning sonar system capable of retrieving the full echo response output from the single beam echo sounder device. This device is intended to use in shallow waters such as ponds and lakes of max depth of 20 feet. The range covering is targetted at 50meters. The system will use a Single beam sonar device (Transducer + integrated processing electronics to produce full echo profile output) with 500KHz frequency and narrow beamwidth. The device is mounted on a base using a stepper motor and will rotate from 0° to 180°, obtained full echo response at each step. These measurements will be stored on an onboard memory of the controling unit like Raspberry Pi. The sonar device will be in the water for not more than 15min...

I need a skilled PLC programmer to develop a control system for an oil project. The PLC will be a Siemens model and will handle flow control and low-level sensing. Key Requirements: - Flow control management - Low-level sensor integration - Interface with sensors, actuators, and HMI Ideal Skills and Experience: - Proficiency in Siemens PLC programming - Experience with flow control and sensor integration - Familiarity with HMI and actuator interfacing Please provide relevant experience in your bids.

Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing. Project Requirements (42×42 mm, 4-Layer Board): Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass. Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash. Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC. Schematics: Design the ...

I’m bringing an MLX90614 infrared temperature sensor into an ESP32-based design and need a clean, ready-to-flash solution that covers three essentials: accurate temperature readings, an immediate on-screen display, and reliable data logging. The job breaks down into two parts. First, document the wiring so I can reproduce it quickly—pin map, I²C pull-ups, and power considerations for the 3 V rail. Second, supply well-commented Arduino-compatible code (ESP-IDF is fine if you prefer) that: • polls the MLX90614 at a reasonable interval • streams both object and ambient temperatures to the Serial Monitor (or an OLED/Nextion screen if you think that’s cleaner) • stores each reading with a time stamp to SPIFFS or a micro-SD card—your call, as l...

I have a junior engineer building the early schematics for an asset-intelligence prototype and I need an experienced embedded-systems specialist to guide the hardware design, write the firmware, and get the first units reliably streaming data to the cloud. The boards must interface with temperature, pressure and motion and more sensors, carry out real-time analysis, perform basic filtering, then aggregate and compress the packets before they leave the device. Security on the wire is non-negotiable, so please be comfortable implementing encrypted transport and key management on resource-constrained MCUs. You will collaborate directly with us on: • Selecting the optimal MCU / wireless stack and finalising the schematic • Integrating the three sensor types and validating their ...

I need robust, well-documented firmware that lets an ESP8266 on the Arduino platform both send and receive infrared commands for multiple air-conditioner remotes. Serial command-line interaction over USB or Telnet is all that’s required; no web or mobile interface is necessary. Core tasks • Build or adapt an Arduino-compatible sketch that scans incoming IR frames, decodes them, and logs the raw timing as well as the decoded protocol and data. • Implement a complementary routine that allows me to replay captured frames or craft new ones from the command line, then transmit them through an IR LED with correct carrier frequency and timing precision. • Structure the code so adding or tweaking protocols is straightforward—I will be experimenting with a variet...

I need a full EasyEDA project—schematic and routed PCB—for a tiny Atmega32U4 board that lets a computer drive a single external LED through a 3-pin XH-JST connector (GND / 5 V / LED). The board must talk and be programmable over a horizontal USB-C port and should remain as small as practical without sacrificing good layout practice. Core requirements • EasyEDA schematic using the Atmega32U4, including crystal or resonator, USB-C E-Markers (where needed), ESD protection, boot-cap circuitry and the standard reset network. • Break-out to one XH-JST-3 plug clearly silkscreened with the GND, +5 V and LED symbols. • Primary power supplied by USB-C 5 V rail. • Firmware that gives basic functionality: detect USB power, expose the MCU as a simple USB HID to ...

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I am building a proof-of-concept 2D LiDAR unit from the ground up and need a mainland-based embedded electronics engineer who can handle every step of the design and bring-up process. The goal is a compact indoor scanner that excels at obstacle detection and terrain mapping while holding tight, high-accuracy tolerances. What the work involves You will take the idea from blank sheet to working board: optical layout, high-speed signal processing, motor/galvo drive, power management, firmware, and a simple USB/TTL data interface that streams polar coordinates for fusion in my existing SLAM stack. Expect heavy use of Altium (or KiCad), STM32/ESP32 class MCUs, precise timing control in C/C++, and low-level debugging with J-Link or OpenOCD. I will handle mechanical housing once you define env...

I'm seeking an experienced circuit designer to create a digital control system for a Bi Color LED Matrix. The core component of this system will be a microcontroller that can add good sound quality designed by software in which each LED will have a sound frequency. Key Requirements: - Design of an LED Matrix of 25 columns and 6 rows - Integration of a microcontroller and some quality sound. - Application focused bluetooth control systems iphone and android Ideal Skills and Experience: - Expertise in digital circuit design - Proficiency with microcontrollers - Experience in control systems for bluetooth iphone , android applications. Please provide examples of similar work.

I have an ESP32-D dev board and three unused PAA5100JE optical-flow sensors. I only need to bring one online first, confirm it streams clean motion data, then replicate the solution for the other two. What I already have • A sketch that compiles but never sees the sensor • All parts on hand, breadboarded and powered • Standard Arduino IDE installed on my end for quick testing What I need from you within the next couple of hours 1. Corrected or freshly written code that initializes the PAA5100JE, verifies it over SPI, and outputs X/Y delta values on the serial monitor at 115 200 bps. 2. A clear wiring diagram (hand-drawn is fine if neat, Fritzing/KiCad even better) that shows every pin between the ESP32-D and the sensor, including power, ground, CS, MISO, MOS...

I’m putting together a new product prototype that pairs a PAA5100JE optical-flow breakout board with an ESP32. The goal is to have the ESP32 handle Wi-Fi connectivity, pull motion data from the PAA5100JE, and give me software control of several GPIOs so I can drive LEDs and switch power to an additional sensor on command. Here’s what I need from you: • An advised pin map and any level-shifting guidance for a clean, noise-free hardware hookup. • Well-structured firmware (PlatformIO or Arduino-IDE friendly) that: – Initializes the PAA5100JE and streams its measurements at a steady rate. – Publishes those readings over Wi-Fi—MQTT, HTTP, or WebSocket is fine, as long as it’s fast to implement and stable. – Exposes simple comman...

I need a working prototype of a fully-automated roti-making machine that can turn out 100 soft, evenly cooked rotis in 30 minutes while keeping the total build cost under ₹10,000. Durability is my top priority: gears, belts, heating plates, and the overall frame must stand up to continuous use without needing frequent maintenance. Heating flexibility is also essential. The design has to accept both induction coils and standard gas burners so I can switch energy sources as required. From dough portioning and pressing to cooking, puffing, and neatly stacking, every step should run hands-free once ingredients are loaded. To keep the budget realistic, I’m open to clever use of off-the-shelf components, 3-D-printed parts, recycled food-grade stainless, or low-cost electronics such as Ar...

IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historical reports, alert not...

I need a compact, production-ready PCB that accepts a single DC input and delivers three regulated rails—24 V @ 12 A, 12 V @ 12 A and 5 V @ 10 A—for an industrial-automation control panel. The board must keep those rails alive for roughly 5-10 minutes by automatically switching to a lithium-ion battery pack whenever the main supply drops. An onboard 8051 microcontroller will continuously sense input power, drive status LEDs and, when a brown-out is detected, shut the rails down in a defined sequence after the battery grace period. I will flash the MCU here, so please include well-commented source, compiled HEX and a simple serial or GPIO interface for configuration. Electrical safeguards are critical in the factory environment, so integrate robust overcurrent, overvoltage...

project title: Build a simple plug-and-play software to control my robot arm + camera over WIFI (AI-ready) Description: I already have the Hardware: -Hiwonder X Arm 1S robotic arm (esp32 inside) -Esp32-s3 Sense camera module (Seed Studio version) -A normal PC to act as the "server" What I need the software to do: 1. I download one program onto my PC, run it and it becomes the server. 2.I flash the arm and the camera once with the files you provide. I power on the arm and camera, they automatically connect to my WIFI and to the server - no manual IP setup, no config files. 4. Any computer or AI on the same WIFI can then send a simple web command like "move arm to x, y, z" and the arm moves. No extra tools required. 5. The camera can take a single snapshot when t...

I need a double-layer PCB design for a consumer electronics radio project. Requirements: - Experience with double-layer PCB design - Knowledge in designing PCBs for consumer electronics - Flexibility to accommodate both SMD and through-hole components Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, Eagle, KiCAD) - Strong understanding of electronic components and circuit design - Attention to detail and ability to meet project specifications Project: **The device:** a small battery-powered IoT unit that stays in deep sleep almost all the time. It wakes on either a button press or an NFC card scan (whichever comes first), plays a short WAV file through a small speaker, and connects over WiFi. **On the board:** ESP32 SMD module, NFC reader with low-power ...

I have a custom board built around an STM32 MCU and I need production-ready firmware that turns it into a reliable embedded control system. The main focus is the button-based user interface: tactile switches, toggle buttons, encoders, potentiometers feed input to the STM, STM should communicate with a windows form application that communicates between peripheral devices on the board and data available in the application. Scope of work • Bring-up of the MCU with STM32CubeIDE and a clear HAL structure. • Implementation of the button reading, debounce, state machine etc for all input methods mentioned above. • Handling of the LED indicators and any SPI, I²C, or UART devices already routed with STM32. • Graceful error handling and low-power housekeeping so the b...

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.