Based on the previous post https://chow.karmeng.my/2025/03/28/programming-esp32-wrover-with-dht22-am2302-humidity-and-temperature-sensor/ , the breadboard that I had purchased has very unreliable connectivity. Resulting in signals from sensor not able to reach the ESP32 microcontroller board.

Upon hours of browsing, discovered expansion board module that is compatible with ESP32 and based on the price it does not break my pocket.

At the time of this post the price point offered is very affordable. I had order 2 pieces of the hardware.

About 2 weeks later, the items arrived.

Impressive build for a merely RM20 for 2 piece of the hardware. The yellow are the data connection, red are for the 3.3V by default. The jumper is set at 3.3V. Finally, the ground is coded in black color.

On top of that, proper labeling of the pins. Extra label such as the width of the ESP32 board are either the 25.5mm or the 24mm board.

Next question will be would the previous code in the post works https://chow.karmeng.my/2025/03/28/programming-esp32-wrover-with-dht22-am2302-humidity-and-temperature-sensor/ ?

Short answer is yes, and here is the wiring.

Powering up the dev board with direct connection works. This can be seen from the COM monitor in the Arduino IDE.

Next step is to identify the USB to UART chip driver.

Will post it up when it is identified.

This expansion board is a passive board, all the usb are used to provide power to the ESP32 without any form of USB to UART to interface with the microcontroller.