Re: Pantum P2502W Toner Reset Chip help

I used 100KHz, but I'm guessing it takes in a lower frequency, as a brute force Read/Write approach at that frequency fails on all cases. So I'm going to bump it down to 20KHz. I'm going to write a different brute force code for the Arduino later today. I'll provide the source for anyone else who may want to try.

If I were to take a guess, some of the open I2C addresses actually form a serial no., which the printer can then read off. This would make it harder to counterfeit.

To further the study, If the brute...

Re: Pantum P2502W Toner Reset Chip help

the pinout of the chip is as follows:
(corner notch)
VCC (+3.3V logic)
SCL
SDA
GND

Here is an I2C device scan dump:

I2C device found at address 0x06 !
I2C device found at address 0x07 !
I2C device found at address 0x0E !
I2C device found at address 0x0F !
I2C device found at address 0x16 !
I2C device found at address 0x17 !
I2C device found at address 0x1E !
I2C device found at address 0x1F !
I2C device found at address 0x26 !
I2C...

Re: Pantum P2502W Toner Reset Chip help

I'm going to hook up an I2C Sniffer some time today, and see just exactly what the printer is trying to do when it prints.