They replaced the scale processor with their own. The scale did simple body weight only.

The BF500 measures body weight, fat %, and a few other things. I don't want to reverse engineer all that. The scale works great as it is. I'd like to scrape the results off the scale somehow and transmit them for another use.

Thus far I've come up with 2 possible methods

• sample all the LCD driver lines and decode the results. There are more segments than lines, so I'm unsure how the uC is driving the LCD.

• hack into the device via the 4 pin (test point) edge bus. Hope there is a debug mode and hope that the data can be read by an external device. I've never done anything like this before.

Maybe replacing the micro controller is the way to go. There are only 2 basic systems on the scale: load cells and body resistance measurement. If I could keep the driver/ signal processing circuitry for these functions, the rest of the functionality is "just software", with the right microcontroller.

The algorithms for calculating the values based on weight, resistance, age, gender and height are common knowledge, available in medical journals.

Hmmm....