RJ11 Pinouts

[piefurz]

Success finally. Got it working. I plugged the RJ11 plug into a surface mount phone jack then wired the color coded wires as is to the Arduino to no avail. I finally opened up the LaCrosse TX23 and checked continuity from the circuit board numbered 1 - 4. Matching the colors on my phone jack they are in reverse order. Yellow - data, Green - VCC, Red N/C, Black - gnd. I used 5VDC on the Arduino as 3.3 didn't work and put a pullup 10k resistor between VCC and DATA. The web site I got this info from is the one in the readme and it says to temp tie DATA to GND to get a reading. It appears that this code takes care of that. I believe it didn't work when I lifted the pullup resistor. Just thought this would help anyone having these same issue. There is a Raspberry PI project that uses a different unit that doesn't send a data stream like this one but contact closures from reed switches and resistors for speed and direction. It includes some math formulas that may help some experiment here. Sorry if this is the wrong place to comment, please copy and paste if needed to proper place. Cool project.