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Comments (3)

brianrho avatar brianrho commented on August 16, 2024

What touch pin?

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edautz avatar edautz commented on August 16, 2024

How to Use Touch PIN?

#4 (comment)

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devegied avatar devegied commented on August 16, 2024

FPM10A Fingerprint Reader Sensor Module from AliExpress have two more pins: T-OUT and T-3V3. These are for integrated touch sensor.
I done some RE on part of sensor: Schematic
The 233DH TonTouch IC is used for touch sensor and with this configuration (TOG - low, AHLB - high) on output T-OUT we should get HIGH when there is nothing on fingerprint sensor and LOW when finger is on the sensor.

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