If your Arduino soil moisture sensor isn't working, check these common issues: verify all wire connections are secure, ensure you're using the correct Arduino pins (A0 for analog, digital pin for ...

A relay module facilitates pump control, while a 5V battery powers the circuit. The code, without libraries, reads sensor data, converts it to a percentage, and operates the pump based on predefined ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

Circuit and working of 12V automatic battery charger. The circuit diagram of the Arduino-controlled 12V automatic battery charger is shown in Fig. 1. It is built around Arduino Uno (Board1), ...

Circuit and working. Circuit diagram of an LED as a light sensor is shown in Fig. 1. It is built around op-amp CA3140 (IC1), transistors BC547 (T1) and BC337 (T2). Fig. 1: Circuit diagram of an LED as ...

Contribute to thomastay/arduino-cc-battery-tester development by creating an account on GitHub. Skip ... load gives you more useful data as you will be using the 18650 battery to draw a certain amount ...

Carefully follow the hookup diagram to complete your hardware,and then upload the sketch to Arduino using the Arduino IDE as usual. The finished circuit can display numbers ranging from 0 through 1023 ...