Autosport Labs

I did something similar to what you mentioned with the math by creating an overlay of the expected yaw vs lat g lines at various speeds. Its interesting to look at but I think the steering wheel angle or steered angle would help a lot more. This graph was from an autocross and I felt that the car wa...

The 12V power was supplied by a DC transformer plugged into the wall, it supplies 11.5V for charging RC car batteries. I was able to load the v2.0.8 firmware and setup a configuration but haven't been able to load the configuration to the RCP. Each time I try to load the new configuration it gets ab...

That was with firmware version 1.2.8.

I can flash version 2.0.8 and test that tomorrow if that will help you.

Brent, I tried the test as you described. I attached the configuration file I used, 3 log files and a picture of the setup. Here are the details of the logs in the zip file: RC_8: This log was recorded right after applying 12V power to the unit, with the unit wired as in the attached picture. The la...

Ok, should I update to firmware ver 2.0.8 for this test or repeat it the same way you did with firmware 1.2.8?

Under that setting I get the same results posted before. Whether in RPM of Frequency mode the same thing happens.

OK, the issue I have had from the start is that on start-up of the RCP (power applied to unit) there is no signal in logs or sensor monitor from any of the pulse input channels. After the unit has powered on and other sensors can be seen working in the logs and sensor monitor, I have to interrupt th...

Hi Brent, I am using "Frequency" mode for the pulse input for the loopback test. I just redid the bench-top loopback test for all three pulse inputs and it worked after I unplugged and replugged it back in. So the pulse input ports are working, though I still have the original issue of nee...

So Brent, I have a new update, I was checking on the internals and found that the capacitor at C68 was not completely connected. See the attached picture. Could this be contributing to the issues I am seeing with the frequency measurement? I tried the loopback test again and it wouldn't work this ti...

Brent any update from your end?

I did some bench testing and tried re-flashing the 1.2.8 firmware and still have the issue. I am planning to incorporate a N.C. momentary switch to RPM signal so that I can manually interrupt the signal to get it to log so I can get RPM in my logs.

Here is the math your are looking for: ( RPM / GearRatio / FinalDrive ) * TireDiameter * pi / 1056 = Speed Where Tire Diameter is in inches and speed is in MPH. I wrote up some Lua Script code you can try if you want. It creates a virtual channel (which only works with Version 2 firmware as far as I...

So I did another test using the loopback pulse signal only. I power on the RCP and then unplug->replug the wire coming from the pulse output so that I can see it reading a value in the sensor monitor. Unplug the computer, leaving the unit on with 12V power from the car and record a log. Leaving the ...

So I ran this test and had the same problem after cycling power to the RCP. What I did was connect the Pulse Output 1 (FreqOut1) to Pulse Input 3 (Freq1), RPM was wired to Pulse Input 1. With the computer still plugged into the RCP I started the engine and had both RPM and Freq1 recording a singal. ...

So I have tested this using the frequency input mode (Hz) instead of the RPM mode and had the same results. The same phenomenon also happened on all 3 frequency inputs of the RCP which is why I thought it might be something related to the input being grounded on startup. For the PWM loopback do you ...

When I say "short" I mean that the input is grounded upon RCP startup. I'll try using the other I/O port to see if I get a different result. I just find it strange that if the RPM signal is plugged into the RCP when I turn it on, I don't get signal. Turn on the RCP without it plugged in an...