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Newbie needs help connecting a Bus Pirate to router UART

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ledtester:

--- Quote from: Hogwild on October 06, 2022, 11:43:13 pm ---Mmm..don't you have that backwards? MOSI would be Master Out Slave in and MISO would be Master In Slave Out. I think you have it backwards.

--- End quote ---

Yeah, you're right.

Hogwild:
Hmm...I can't figure out any obvious way of attaching the probes to the PCB pads. How do people usually go about soldering on headers (straight)?

ledtester:
Here's a custom jig... probably 3d printed:



From:

How We Hacked a TP-Link Router and Took Home $55,000 in Pwn2Own
https://youtu.be/zjafMP7EgEA

Hogwild:
Yes, I saw that. It's very impressive, but it looks like it would be pretty price/complicated to make.

Hogwild:
I'm still not getting any text output on my screen when connecting what (we think) are the correct pins.

Pads on this board measure as follows (from Left to Right).

0V,  5.01V,   1.799-1.800V,  Cont with GND

I took these measurements using what looked like a large ground plane as ground. I don't have access to the MCU or anything like that. As I said, most of the components are covered with cans.

Anyone have any suggestions what I should try next?

Oh, and...thanks for all your help so far!

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