MobileRead Forums - View Single Post - Unable to establish serial connection to B005 (Kindle DX)

k1ndle · 11-13-2020, 08:39 AM

Okay, I went and got myself FTDI USB-to-TTL, it supports 5v or 3.3v.
The baud rate for Kindle DX (B005...) is 115200.

I soldered the wires on the UART pads (left-to-right) (battery is closer to me):
1 - NO WIRE
2 - TX
3 - RX
4 - GND

And connected them on the usb as follows (left-to-right):
1 - GND
2 - NONE
3 - NONE
4 - TX
5 - RX
6 - NONE
https://i.imgur.com/qA164sA.jpeg

I've never used screen that much so I had a hard time getting it to work properly. I got question marks inside boxes or "diamonds" as some of you may call them.
Easy solution was to install minicom and point it to my usb device which also fixed the screen output as it was getting the output side-by-side with minicom.
I ran minicom -s and changed the USB device and flow control.

11-13-2020, 08:39 AM	#3
k1ndle Junior Member Posts: 7 Karma: 10 Join Date: Nov 2020 Device: B005	Okay, I went and got myself FTDI USB-to-TTL, it supports 5v or 3.3v. The baud rate for Kindle DX (B005...) is 115200. I soldered the wires on the UART pads (left-to-right) (battery is closer to me): 1 - NO WIRE 2 - TX 3 - RX 4 - GND And connected them on the usb as follows (left-to-right): 1 - GND 2 - NONE 3 - NONE 4 - TX 5 - RX 6 - NONE https://i.imgur.com/qA164sA.jpeg I've never used screen that much so I had a hard time getting it to work properly. I got question marks inside boxes or "diamonds" as some of you may call them. Easy solution was to install minicom and point it to my usb device which also fixed the screen output as it was getting the output side-by-side with minicom. I ran minicom -s and changed the USB device and flow control. Last edited by k1ndle; 11-13-2020 at 08:41 AM. Reason: For the love of god, add some max-width to images..