It's no secret that I love the AiM Smartycam. It's the perfect companion to an AiM dash and it's one of the few tech products I've bought in a while (besides Airpods!) that absolutely justifies its premium price. Doing video with a GoPro or other custom camera is a lot of legwork compared to setting up your Smartycam once and letting it do the work for you.
See
the thread on rendering video without a Smartycam if you don't have one, and want to use a GoPro other camera instead.
If you took delivery of an SR with a Smartycam, you get a lot of features out of the box. You should get a basic overlay with rpm, gear, speed, and track map without any work. But you may notice that your throttle and brake don't work! Here's how to get them going:
Brakes:
This is the easy one. Leave your car on, open RaceStudio 3, and connect to your dash's wifi network. Pull a session from your dash and look at your max front brake pressure in heavy braking zones. Set it to
bar, not
psi. This becomes important later.
Your max may vary. My car badly needed a bleed so I wasn't running as much pressure as I should; other cars should be reading ~20bar. So in this case I'm going to assume my maximum is 8 bar.
Then, you want to create a Math Channel
in your dash, not in the analysis section, so your dash can calculate it live and feed it to the Smartycam. Click the gears icon at the top left, highlight your dash, and go into its settings. Click Add Channel:
I name my channel "BrakePerc", set it to "Pct Brake Load" and do a simple math operation to get it to where I want to go. You want your max pressure * this constant to equal
100. So, since 100/8 = 12.5, my channel is as follows:
Upload your config to the dash and test it. When your car is on you can open it up in RS3 and view live data. I can't show you right now because my car is in a trackside garage, but it should be fairly self-explanatory.
Sidenote: this is why we are looking at our data in bar, not psi. The math that the dash does internally is always on bar. If you are doing a math channel in RS3 Analysis you can choose the unit. Pick a consistent naming scheme so you can tell what is native to your dash and what is a Analysis Math Channel!
Throttle:
This one is a little weirder. We're going to use the channel SDS IGN AN 1 (deg) from the ECU. On my car, 40.2 deg is full throttle and 89.2 deg is zero throttle. So this means we can't just apply a constant offset, we need to invert it. I do this using an intermediate channel (ThrottleInter) and a final channel (ThrottlePercCorr).
The intermediate value translates zero throttle (89.2 * -0.5 + 45) to 0.4, and full throttle (40.2 * 0.5 + 45) to 24.9. We then multiply that by 4 for the final result. This isn't exactly right but it is close enough for rock n roll.
Here's how it comes together:
Sending to SmartyCam:
The last step is to ensure this is being sent to the SmartyCam directly. Set your Throttle Pos and Brake Pos:
And that's it!
You can configure your overlay however you like. Here's how I do mine:
Here's an example of how it comes together:
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