To view the serial output of an ESP32 without using an IDE the following guide can be used.

Install PuTTY

PuTTY is a standard tool that provides a simple terminal interface.

Connect Hardware

In our setup we used an ESP-Prog as the USB / Serial adaptor, connected to our ESP32 via the 6 pin ribbon cable (UART port). This will create two USB serial ports on your Windows PC. The higher number port is the UART connection of the ESP-Prog.

Connect PuTTY


At the initial Configuration screen select:

Connection Type: Serial

Serial Line: Your comms port (the higher port number for the ESP-Prog – look in Windows Device Manager > Ports if you need to discover what serial ports have been assigned)

Speed: 115200

Press the Open button and you will start viewing the live serial output of the ESP32.

We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.


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