How to Power ESP32

Hardware Used In This Tutorial

Or you can buy the following sensor kits:

How to power ESP32 via USB port

You can use the following power sources to power ESP32 via USB port

• Computer and USB Cable
• Phone charger (USB terminal)
• 5V Power Adapter (USB terminal)

How to power ESP32 and sensors via USB port

The below diagram shows and example of powering ESP32 (via USB port) and DHT22 sensor

You can power ESP32 via USB port as above, and then get power from Vin pin to power sensors.

Keep in mind that this approach works only for a few low-power sensors. If you’re using sensors with higher power requirements, avoid powering them from the Vin pin to prevent damage to your ESP32 board. In any case, the safest method is to supply power to your sensors or display separately. You can do this by using this power splitter set, as shown below:

How to power ESP32 via Vin pin

You can use the 5v power adapter with barrel jack to power ESP32 via Vin pin. You can do so by two ways:

• Cut the wire and separate the positive and negative lines. Then connect the positive line to Vin pin and the negative line to a GND pin of ESP32
• (Recommended) use a DC Jack connecter

How to power ESP32 and sensors via Vin pin

The below diagram shows and example of powering ESP32 (via Vin pin) and DHT22 sensor by a 5V power adapter

The best way to power ESP32 and sensors

Among the suggested methods, powering sensors and external components separately is strongly recommended. This setup ensures that motors, sensors, displays, and other peripherals have their own power supply, protecting the ESP32 board while providing adequate power for each component.

How to actually do wiring easily and conveniently

In practice, we require a method for secure, tidy, safe, and convenient wiring. The optimal solution is to utilize a screw terminal board.

Learn More

• ESP32 - Software Installation
• ESP32 - Hardware Preparation
• ESP32 - Hello World
• ESP32 - Code Structure
• ESP32 - Serial Monitor
• ESP32 - Serial Plotter