I2C decoding

After reviewing the schematic was able to trace back on the board a test point I could solder some test leads onto. Time to hook it up to the 'ol Parallax USB oscilloscope and see what comes out.

Tap locations for I2C access

Interesting find I should have though of before. The 24wc02 chip is a 2K serial EEPROM for data storage. This model stores up to 3 temps in memory and looks like a good candidate for the place I need to tap into for the data.

No data

Well that did not work. Seems to be easy access for voltage tests. The middle two pads are for power and ground however. Since that did not work time to start looking at components on the board and possiblly output from ASIC(s) on back side for a new tap.

I need BT for my ear hole

Well kids are sick again and wife currently logs the son's name, date/time, temperature, and medicine (fever reducer) given. While the pencil and paper method works great I feel the need to apply modern technology.

We currently havea Braun Thermoscan type 6022 ear thermometer which has an interesting plug underneath the battery section. Might be a place to tap into what the temp on the LCD is.

Red square below is hopfully the sweet spot for an easy data tap.