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Yorker · 09-23-2019, 12:20 PM

I decided to try and solder what i have to the kindle, very tiny points it was a mess....

Eventually i think i succeeded since i checked the voltage with the multimeter.

For some reason the USB\TTL adapter didn't light up on TX but RX and GND were fine.
GND was wrapped around a screw so that is sold while TX and RX were soldered so it's strange.

I checked the voltages and TX was getting 0.9 while RX got 3.3 so i guess based on experiments if its less than 1 it doesn't light up

Also on the dmesg it showed as follows:

Code:

[    0.850853] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A

But after disconnecting it still shows that so it's not related to the adapter

Does this mean i need 1.8?

Also i found this if it relevant

09-23-2019, 12:20 PM	#14
Yorker Enthusiast Posts: 28 Karma: 10 Join Date: Sep 2019 Device: KPW	I decided to try and solder what i have to the kindle, very tiny points it was a mess.... Eventually i think i succeeded since i checked the voltage with the multimeter. For some reason the USB\TTL adapter didn't light up on TX but RX and GND were fine. GND was wrapped around a screw so that is sold while TX and RX were soldered so it's strange. I checked the voltages and TX was getting 0.9 while RX got 3.3 so i guess based on experiments if its less than 1 it doesn't light up Also on the dmesg it showed as follows: Code: [ 0.850853] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A But after disconnecting it still shows that so it's not related to the adapter Does this mean i need 1.8? Also i found this if it relevant