Where can I find/access the CurrentLapTime, LastLapTime, and PredictiveLapTime channels referenced on page 146 of the manual under the description for the Reset session button? I want to use them for some maths to compare against an arbitrary target time but the only way to access them seems to be to drop them into the page as a dedicated “Time” control. If they don’t currently exist as accessible channels, what is the possibility of a feature request to add them to the adu.track channel group?
Hi!
Indeed, there are no channels with LastLapTime and PredictiveLapTime values.
However, there is a channel that carries the value of the CurrentLapTime → adu.track.lapTime.
Adding those channels is not a big deal, but I’m curious about what kind of calculations you need to perform on those channels. Could you tell me more about it?
Some amateur endurance racing series, such as Luckydog, will stipulate a minimum lap time for a race, with the goal being to limit speed delta between top and bottom of a multiclass field. At some tracks we are projecting our car would, at full beans, be pushing past this limit and so we will need to figure out how to moderate the cars performance to get as close to the arbitrarily stipulated limit without going over. Going over (under) the limit or excessive break checking at the line or other erratic behavior to reduce speed is subject to penalty up to and including black flag/dq.
By having the predicted lap time channel, I could pretty easily subtract the value of this minimum time and display a red/green bar showing the driver how close he is to being over or under the time he needs to reach by the end of the lap so that he can moderate performance throughout the lap.
Longer term stretch goal, I would then be able to modulate throttle curve/maximum throttle to tune in a sweet spot for the car to hit that laptime with minimal adjustment needed by the driver and then dynamically increase/reduce performance based on the delta. eg, if the driver makes a mistake into turn 1 and loses heaps of time relative to a “normal” lap then I can shift the throttle curve to allow it to open more fully on subsequent straights to hit a higher top speed and recover laptime up to what was lost. The percentage delta of predicted vs target divided by remaining lap distance would determine the magnitude of the throttle map adjustment.
We will add last lap time and predictive lap time channels in the upcoming release.
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Thank you! What is the unit of measure for these channels? Integer milliseconds, real seconds, or something else? It isn’t critical but it would be nice to be able to feed an arbitrary channel/value into the time display widget to simplify display rather than burn a but of logic functions on it.
It will be the same unit as for adu.track.laptime, so seconds with a divider of 100, in other words: seconds with hundredths of a second.
Channels will be added in the upcoming beta release.
Hi!
There is new experimantel ADU version 105.0 with added channels that you requested.
Awesome, thank you, I will check it out.