1 x Linux or Windows PC
1 x USB to TTL/UART Converter ( Serial-Converter)
3 x connection Cable
UART – GPIO:
The order of 4-pins is almost always the same on each PCB, starting with GND (the only square pin)
Note: Soldering contact pins or cables is not necessary for a PCB with through-hole UART holes, a mechanical connection is sufficient.
4. 3.3V, VCC (IS NOT NEEDED)
1. Connect the PCB pads to the corresponding Serial-Converter ports, and then connect the USB-Connector of the Serial-Converter to the USB port on the PC.
GND (PCB) <———— > GND (Serial-Converter)
TX (PCB) <————> RX (Serial-Converter)
RX (PCB) <————> TX (Serial-Converter)
USB-Connector (Serial-Converter) <————> USB-Port (PC)
2. Download Putty and make the following settings:
3. To establish the TTL connection with the board, press the <Open> button and then connect the board to the mains.