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Just wanted to share a serial connector that worked for me on a Kindle Paperwhite 3. The connector is similar to what others have used and consists in two cheap modules bought on ebay:
- FT232RL-FTDI-USB-3-3V-5-5V-to-TTL-Serial-Adapter-Module-for-Arduino-Mini-Port
- 12V In 1.8V Out AMS1117 Step-Down DC Power Converter Module
In addition, the following is very handy:
- STOCK IN US 1pc 40P 20cm 2.54mm Female to Female Dupont Wire Color Jumper Cable
- 3 Needles (like the ones coming with new shirts)
To assemble, cut one of the female to female jumper cable in half and solder one of them to the 5V pinout of the FTDI and the other to the GND. Connect the two jumpers to the 5V input of the Step-Down module. Connect a Female to Female Jumper cable from the 1.8V output of the step-down module to the middle jumper of the FTDI. This provides the 1.8 Voltage to the FTDI, instead of the 3.3V or 5.5V that can be selected using the original jumper. The FTDI can then be connected to the serial pins of the Kindle. I elected not to solder the wires and used instead 3 needles that I cut and inserted into the jumper cable (fits perfectly). I used foam as described in another thread to hold the needle in place. See pictures for more help. The whole thing worked perfectly to rescue a bricked PW3 for less then $10.
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