I have a few general questions that you guys might be able to help me with to get me started on a few projects. I'm eventually going to build a DAQ for my track day car and hopefully a piggyback controller for my other car. But first a few basic questions to help me get started. My background is mechanical so sorry of these are a bit basic.
I want to log some crank/cam sensor data (VR sensors) so that I can potentially use one of them as a trigger. However, I need to first probe these signals so see what they look like. I want to somehow tap into the stock wiring harness to read the data coming from the VR sensor to the ECU without affecting the quality of the signal as it enters the ECU. At first I thought I could just wire the Arduino in series and then just read in the data and then pass it back out. However, I'm not sure if the Arduino is fast enough. If it starts lagging then it could mess up the engine. How should I connect the Arduino to the signal wire so that I can read the voltage without affecting it?
How fast is the Arduino capable of processing input and output data? I know this is a really general and vague question but if I'm triggering some software every camshaft rotation then it'll have to cycle through everything when the engine is running at up to about 8000 RPM. Since the cam sensor will blip at half that rate, that means the Arduino needs to cycle at 4000 cycles/min or 66 Hz. Is it capable of reading in and processing data that fast? Since I'm going to be setting up some PID controllers and it might be unwise to have them refreshing so fast I may set up a counter so that has it only cycle at around 10 Hz to smooth things out. Still, I don't know how I can figure out if I'm going to have issues or not.
What's an easy way to connect breadboards, etc. wired in remote locations? Say I have a bunch of LEDs mounted on my dashboard that need to be wired into a breadboard that's in the backseat. What type of connectors and wiring should I use to accomplish this? How do I go from a small wire to one of those pins that you stick into a breadboard? Is there an easy way to wire up analogInputs without crimping on a pin? I know they make connectors where you can stick in a wire and then twist a screw to secure it but I don't know what they're called or where to look for them.