Search found 127 matches

by toga94m
Sat Oct 22, 2016 4:32 pm
Forum: Feature Requests
Topic: Recording file number showing as a virtual channel
Replies: 3
Views: 3474

If you're logging time (from the GPS, so it's accurate), you can write down the time of your tests (cellphone time is very accurate too) and use that info to re-sync them later. That's how I reconnect RCP logs from our dual-driver autocross car with our timed runs at the end of the day.
by toga94m
Fri Oct 14, 2016 7:31 pm
Forum: Sensors
Topic: Question about strain gauges
Replies: 12
Views: 6057

If you don't need really fast data, you could use 4 digital output bits to drive a 16:1 mux, which would feed one of 16 analog channels at a time into one RCP analog input. Or, you could use two 16:1 mux chips to bring 16 pairs (32 analog channels) into two RCP analog inputs in parallel. Or 3 digita...
by toga94m
Sun Oct 02, 2016 11:38 pm
Forum: Lua Scripting
Topic: Start Logging automatically once Race Capture Pro is powered
Replies: 3
Views: 2327

I'm using a variation of that, which triggers by battery voltage. If you're under 13V, the alternator's not running, so don't log. Once battery is above the threshold, start logging.
by toga94m
Wed Sep 28, 2016 2:22 pm
Forum: Hardware and Installation
Topic: OBDII on which CAN Bus?
Replies: 1
Views: 1715

You need to edit your script to talk to the second channel. Hardware channel 1 is scripting channel 0, hardware channel 2 is scripting channel 1 (just subtract 1 from the number). https://wiki.autosportlabs.com/RaceCapturePro_Lua_Scripting#CAN_Bus_functions These four examples are using CAN bus 1 (b...
by toga94m
Wed Sep 28, 2016 11:31 am
Forum: RaceCapture App Operation and General Q&A
Topic: RACECAPTURE APP WILL NOT CONNECT TO PC
Replies: 11
Views: 4007

I was able to use 1.7.5 on my Win8 laptop via USB to the RCP mk1 last week, for script editing. Now that I think of it, it worked both when the RCP was powered byUSB (in the house at the couch), and also when the RCP was in the car powered off 12V, but still connected to the laptop by USB. Laptop ha...
by toga94m
Tue Sep 27, 2016 4:25 pm
Forum: RaceCapture App Operation and General Q&A
Topic: RACECAPTURE APP WILL NOT CONNECT TO PC
Replies: 11
Views: 4007

Hmmm, I have similar problem. A Windows 7 laptop which previously connected to a Mk1 RCPro now doesn't want to connect. Device is visible in Control Panel Device Manager, RaceCapture/Pro (COM11), but the App just skips over it and keeps cycling through the ports. Another computer, Windows 8 tablet,...
by toga94m
Tue Sep 20, 2016 11:39 am
Forum: Sensors
Topic: GM Flex Fuel Sensor
Replies: 26
Views: 17637

I fiddled around with this one I have and on the calibration post I can't get it to show a square wave. It is a Heathkit IO-4550 The cal signal is 1Vpp square, right? You'll need to turn down the trigger level (red knob in the trigger area) to a lower level - start just a little clockwise of center...
by toga94m
Tue Sep 20, 2016 11:29 am
Forum: Sensors
Topic: GM Flex Fuel Sensor
Replies: 26
Views: 17637

Sorry, I just got back online after a week vacation, and my office blocks youtube. Looks like your vertical settings are in the millivolts range? Change up the left-side knob to about 2V/cm, and adjust Y1 (vertical) position so the flatline (nothing connected) is at the bottom of the screen. That'll...
by toga94m
Fri Sep 09, 2016 8:22 pm
Forum: Sensors
Topic: GM Flex Fuel Sensor
Replies: 26
Views: 17637

Well I found a super old oscilloscope but I have no idea if it works. I'll try playing around with it tonight to see what I can come up with. Any pointers on using this thing would be helpful! I built one of those kits myself, many years ago. :) It'll be useful to show any signal activity and waves...
by toga94m
Fri Sep 02, 2016 4:57 pm
Forum: Sensors
Topic: GM Flex Fuel Sensor
Replies: 26
Views: 17637

There's a round-about way you can get both parameters into RCP, but you'd need some extra hardware. The fuel content drives frequency, temperature drives pulsewidth. Both have an impact on the waveform dutycycle (percentage of time it's "on" vs "off"). You can use a resistor/capacitor pair to (rough...
by toga94m
Fri Sep 02, 2016 4:46 pm
Forum: Lua Scripting
Topic: Auto Logging from start to finish of laps
Replies: 5
Views: 2689

There are a handful of options here - https://wiki.autosportlabs.com/RaceCapturePro_Lua_Scripting_Examples I have the battery-voltage version working on my Mk1 hardware. I'm having trouble combining it with reading/logging CANBus channels though. Mk1 has limited script memory available... function o...
by toga94m
Mon Jul 25, 2016 1:36 am
Forum: RaceCapture App Operation and General Q&A
Topic: Can't pair to BT module after firmware update
Replies: 5
Views: 2442

I had to trim out the filter section, and replace some constants with their numeric equivalents to make the Megasquirt script fit on a MK1. It worked fine in-car, before starting the car. Once battery voltage got high enough to start logging, the script silently crashed. So I commented out the secti...
by toga94m
Sat Jul 23, 2016 11:54 pm
Forum: RaceCapture App Operation and General Q&A
Topic: Can't pair to BT module after firmware update
Replies: 5
Views: 2442

The megasquirt script as-is is too large to run on MK1 hardware (on 2.8.7 firmware). I pared it down a bit and got it to run without complaining about memory limits, but because the racecar is at another guy's house, it'll be tomorrow before I know if it actually pulls data from our Megasquirt CAN b...
by toga94m
Sat May 28, 2016 3:55 pm
Forum: RaceCapture/Pro General Q&A
Topic: Lap Time Accuracy
Replies: 18
Views: 6491

toga94, do you use the AEM Data? My autocross race times are measured on track, from optical beams at start & finish, with a big LED display after finish. We typically run 30-40 seconds per pass, timer display accuracy to 0.001 seconds. I use RCP mostly to capture accel & yaw information and (at ho...
by toga94m
Fri May 27, 2016 12:10 am
Forum: RaceCapture/Pro General Q&A
Topic: Lap Time Accuracy
Replies: 18
Views: 6491

Re: Lap Time Accuracy

I have a 8 lap heat race that I logged, and i'd like to know why the GPS generated lap times seem so generic compared to the lap times recorded by Race-Monitor (uses a transponder). I turned Auto Race Track detection OFF and entered my Start/Finish coordinates. I also have a sector0 coordinate as w...