I always think of little things I want to build or do. I originally studied EE when i first got into college, but switched to IS. I have a base understanding and can solder. I'm basically looking to build a device that hooks inline with a sensor on my motorcycle. The plug has 3 wires (power, ground, and sensor). Not 100% sure what it senses for, but I believe it's different resistances/voltages. Idea: I'm wanting to build a simple logic device that senses resistance and displays a number on a single digit LCD display and outputs that resistance, unless it picks up a specific resistance. Application & Purpose: For my bike, I want a gear indicator that I can mount on the gauge cluster and display what gear I'm in. I also want it to pick up every gear, including neutral, and when it's in 6th gear, I want it to tell the computer it's in 5th gear. In 6th gear, timing is retarded to limit HP, and RPM is limited to 10,200. Background: They have the gear indicator for the bike, and they have the device called a TRE (Timing Retard Eliminator). However, the TRE tells the computer that it's in 5th gear ALL THE TIME. This is bad for a few reasons: 1) neither during start nor idle, timing is not retarded; 2) each gear has its own timing map that Suzuki did R&D to get. The reason why the cheap TRE's are popular, aside from the obvious, is because the timing map in 5th gear puts out the most HP. With this cheap TRE, the aftermarket gear indicator will show 5th gear all the time, and the neutral indicator will not work. I don't know what chip to use, nor do I have a programmer for it. How could I program it to pick up a specific resistance, maybe look for a specific voltage drop? I'm guessing it could derive power from the plug going to the sensor, but I don't know how much voltage it is, and perhaps a cap to keep the charge up for sending voltage to the sensor. Fundamentally, I understand what I need to do, but I don't know where to begin. **EDIT** PS This is my first post (obviously), so if I'm posting in the wrong section (or site all together), then I'm sorry and can you point me to the correct location?