PN 8-038 BA · RS · ME / Regional academic maker initiative

Micro-USB cable

The connection between a computer and development board for power, programming and serial communication.

What it is and how it works

The kit includes one Micro-USB cable. It connects the development board to a suitable computer USB port. A USB cable carries power; a data-capable version also contains the connections needed for communication. The larger USB-A plug and smaller Micro-B plug have different shapes and are not interchangeable.

The photograph does not establish whether the supplied cable carries data. Charge-only cables can power a board while preventing program uploads. A glowing power indicator therefore does not completely test the cable. Neither cable length nor its current rating is specified in the inventory image.

What we can use it for

  • Upload the first ESP32 program if the cable supports data.
  • Read sensor values and debugging messages through a serial monitor.
  • Power a small prototype through the development board's USB connector.

First exercise

Connect the board alone and check whether the expected device or serial port appears on the computer. Upload a simple message-printing program. If power works but communication fails, try a known data cable and check the driver required by the board's USB interface. Record which cable passed this test.

Handling notes

Insert Micro-B in the correct orientation without force. Disconnect by holding the plug housing, not pulling the wire. USB power does not make GPIO pins tolerant of 5 V. Check the board documentation before connecting another power source simultaneously.

Background: Adafruit — USB Micro-B power and data connections. This product does not identify the kit cable.