Сообщение от zake
Hello, the positive terminal of the 4.2V power supply is connected to the positive terminal of the battery, and the negative terminal of the 4.2V power supply is connected to the USBTTL and the negative terminal of the battery, right? @Yoti
|
you need to connect the grounds of TTL adapter and your PSP
connect the one wire UART (K-line) to middle contact, as the schematic says
it's up to you what you power both TTL and PSP from - as long as their grounds and one wire UART line are connected its OK