We’re building a solar powered IOT device that will use an ESP32 and JSN-SR04T ultrasonic sensor. The device needs to be designed to send a single record to our server each day (possibly via MQTT). This needs to contain date/time, distance and battery charge.
We need someone to design the PCB which will include the esp32, charging and power management features for a 5v solar panel and a connection to the JSN-SR04T module.
We also require the program that provides a simple way for an end user to connect the IOT device to a local wifi network, sends data to our server and also allows for a OTA update.