Arduino Forum

Topics => Device Hacking => Topic started by: ErtugrulBolat on Aug 27, 2017, 12:44 pm

Title: ch340 usb ttl to pro mini DTR hack
Post by: ErtugrulBolat on Aug 27, 2017, 12:44 pm
ch340 usb not have DTR pin for programming pro mini. Simple hack
Connection:
CH340     ProMini
 Vcc            Vcc
Gnd             Gnd
Rx                Tx
Tx                Rx
DTR             DTR
Title: Re: ch340 usb ttl to pro mini DTR hack
Post by: sdingman on Jun 12, 2019, 08:49 pm
My HiLetgo USB to TTL CH340 Module doesn't have a DTR Pin.
Title: Re: ch340 usb ttl to pro mini DTR hack
Post by: Riva on Jun 13, 2019, 01:25 pm
My HiLetgo USB to TTL CH340 Module doesn't have a DTR Pin.
That's why the OP pictures show the wire soldered directly to pin 15 (DTR) of the CH340 chip.