Thursday, February 1, 2018

How to build your own USB to UART serial converter using FT232 with voltage level shifting

The board includes 500mA fuse protection, EMI filtering, power LED indicator, RX and TX LED indicators, and a voltage level shifter that makes it compatible with 3.3V and 5V boards. This way you don't need to check the jumper if it outputs 5 or 3.3V so you don't risk burning your microcontroller. It works with both voltages.

Update: 2024, March, 6: I made another serial adapter build around FT231 which require less components since it is 5V tolerant and is also cheaper. It is part of a development board:

USB to UART serial converter board tutorial DIY home build