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Live Reverse Engineering WiFi modules: 8 steps (with pictures)



Using the continuity settings for my multimeter, I checked the pins on the tape connection with the ground on the WiFi module one pin at a time and noted the results.

Then I tested the test points on WiFi module with the pins on the tape connector and noted which test point is which pin.

I received a resistance of pins 1, 2, 5, 6 and 8 at the tape connection to the ground, and 0 impedance or no resistance at pins 3, 4 and 7 from the tape connection to the ground. This told me that pins 3, 4 and 7 are grounded.

Because pins 2, 5 and 6 on the motherboard's band connection were grounded or no connection, and pins 3, 4, and 7 went to the ground on the WiFi connection band modules. I came to the conclusion that the band turns between the two contacts so that pin 1

on the motherboard is pin 8 on the WiFi module.

Since pin 7 on the motherboard's band connector is a steady 3.4 volts which would make pin 2 on the WiFi module VCC. Now we have calculated 4 pins on the WiFi module.

Pin 2 VCC

Pin 3 Gnd

Pin 4 Gnd

Pin 7 Gnd


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