[ESP32 RS485 Google Sheets Logger -- 2](https://freelancer.com/projects/python/esp-google-sheets-log

[ESP32 RS485 Google Sheets Logger -- 2](https://freelancer.com/projects/python/esp-google-sheets-logger.html) need a small IoT device built that can read data from a Selec 500 UCI PID controller through its RS-485 Modbus port and send those values automatically to a Google Sheet via Wi-Fi. The device should: 1. Use an ESP32 board (low-cost, Arduino-compatible). 2. Take input from the RS-485 port of the Selec PID using a MAX485 module. 3. Host a Wi-Fi setup page (so user can enter SSID & password). 4. Send the PID readings (PV, SP, and OP values) every few seconds to a Google Sheet (via a Google Apps Script endpoint). 5. Work on 5V DC or USB power. 6. Be housed in a small project box or DIN rail enclosure for industrial use. **Skills required** __Arduino, Electronics, Embedded Sys...