3.7V 500mAh Li-Po Rechargeable Battery (502030) Raspberry Pi Case 1× Five way road tracing

1× Five way road tracing sensor TCRT5000

in Electronic circuits to perform switching operations

1 x 6-0-6 6V Center Tapped Step Down Transformer(6V/12V 1AMps)

The resistance of each is 10K Ohm and the rated power is 2W

you can use external supply or connect +5V and GND pin of Arduino

3.7V 500mAh Li-Po Rechargeable Battery (502030) Raspberry Pi Case 1× Five way road tracingThis is a 3. 7V 500mAh lithium polymer (Li Po) rechargeable battery, ideal for compact and portable electronic devices. It features a high energy density, lightweight design, and stable discharge characteristics. The battery comes with a built in protection circuit module (PCM) to prevent overcharging, over discharging, and short circuits. Features and Specifications of 3. 7V 500mAh Li Po Rechargeable Battery: Battery Type: Lithium Polymer (Li Po)