Not specified
3 proposals
Need an electronics engineer to transfer an existing device from a breadboard to a full PCB project.
There is a working prototype assembled on a breadboard. It is necessary to analyze the current connections, correct the schematic if needed, develop a schematic diagram, and create a PCB layout for the subsequent production of a test batch.
The device is based on ESP32-S3 and includes: I2S microphone; RTC DS3231; LoRa SX1278; GPS module with UART and PPS; autonomous power supply; service connection for firmware and diagnostics; status indication. What needs to be done: understand the existing prototype on the breadboard; check and refine the schematic diagram; select or clarify components, ratings, power supply, and protection; develop the PCB layout considering the features of ESP32-S3, I2S audio, LoRa, GPS, and RTC; provide connectors, test points, firmware, and diagnostics; perform ERC/DRC checks; prepare a set of files for production and assembly. Expected results: output files in KiCad or Altium Designer; schematic diagram in PDF; PCB layout; Gerber and drill files; BOM; Pick&Place / CPL file; a brief description of the changes made, recommendations, and technical risks. Preference will be given to a performer from Kyiv: it is desirable to have the opportunity to personally show the prototype, discuss details, and conduct a joint technical review if necessary. In the response, please indicate experience with ESP32, autonomous power supply, radio modules, and examples of similar work.