MobileRead Forums - View Single Post - [Progress] Jailbreaking Kindle 4.0 (Touch/No Keyboard)

geekmaster · 12-01-2011, 10:56 PM

You can try it. 470K might only work for very slow data rates though. 10 of them in parallel would be 47K, and more likely to work at the speeds needed.

You can also "steal" resistors out of junk electronic devices. You would need to solder small wires on any salvaged surface mount resistors though. You can tell which "little boxes" are resistors by the "R" markings on the silkscreen printed solder mask. If you keep all the resistors separated from capacitors and such, you can just measure their resistance. Some people extract parts from circuit boards with a butane torch:
http://www.instructables.com/id/Salv...nt-components/

All you need is a common TTL "pull-up resistor". I suspect that MOST of the resistors on any digital circuit board would work as TTL pull-ups for the kindle serial port level conversion.

12-01-2011, 10:56 PM	#160
geekmaster Carpe diem, c'est la vie. Posts: 6,433 Karma: 10773670 Join Date: Nov 2011 Location: Multiverse 6627A Device: K1 to PW3	You can try it. 470K might only work for very slow data rates though. 10 of them in parallel would be 47K, and more likely to work at the speeds needed. You can also "steal" resistors out of junk electronic devices. You would need to solder small wires on any salvaged surface mount resistors though. You can tell which "little boxes" are resistors by the "R" markings on the silkscreen printed solder mask. If you keep all the resistors separated from capacitors and such, you can just measure their resistance. Some people extract parts from circuit boards with a butane torch: http://www.instructables.com/id/Salv...nt-components/ All you need is a common TTL "pull-up resistor". I suspect that MOST of the resistors on any digital circuit board would work as TTL pull-ups for the kindle serial port level conversion. Last edited by geekmaster; 12-01-2011 at 11:09 PM.