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Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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04-06-2021, 12:43 PM | #29 | |
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Next version of Garmin Catalyst should have the accelerometer etc. in the camera. USB cable to the tablet in the paddock. Too much data to observe and assimilate on track. With that setup, nothing other than the small camera to mount in cabin (like the SmartyCam non-GP). Maybe just a small display like Apex Pro or Solo II. Re: HLT, the issues I've seen aren't manual sync issues, they are GPS/data transfer issues. Like speed going from 90 to 55 in a split second. For video synching, I used to have the AIM dash visible in my GoPro frame and I would sync based on MPH on the big straight. Discovery Parts sells a nice kit with a combo mount, AIM Solo II and a Smarty Cam. Like $1800. Everything you need.
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2013 BRZ Limited | SWP | Verus Ventus 1 and High-Efficiency Rear Wing | Invidia N1 Ti | JR Oil Cooler | RCE T2 | RaceSeng Cas/Cam | SPL LCA & TA | Wilwood/RR Racing Stage II/Sport Performance | XP10 | Apex ARC-8 | Toyo R888R | 245/40-17 | Sparco Ergo II/Evo II | AIM MXP | SmartyCam GP HD 2.2
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The Following User Says Thank You to Alan For This Useful Post: | jflogerzi (04-09-2021) |
04-21-2021, 09:32 PM | #30 | |
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04-21-2021, 10:39 PM | #31 | |
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wire goes into the trunk, then into an audio extension cable which then goes through the seam around the back seat, and connects into a Sony ICD-PX440 (was $60, there are newer models available now) that I put in the pocket on the back of the passenger seat. After a bit of testing, I concluded that even a cheap Sony recorder captures sound way better than a GoPro with the same mic plugged in. To synchronize the sound and the video, I record a clap on both the video and the sound recorder (before the mic is plugged in), and then match them in iMovie when I come home. It may seem complicated at first, but once you figure out the workflow it won't take you much extra time, and the results speak for themselves. Funny thing is, when I first tried that "use clap as a reference to align sound and video", I found that my clap-sync external audio is better synced to the video than the files straight out from the GoPro. Apparently there's some A/V sync bug in GoPro's |
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04-22-2021, 02:13 AM | #32 |
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This is my current setup. Audio portion is new and hope its passable quality,
RaceChrono(Using CAN Bus) Pro App(support the DEV) OBDLink LX OBD2 Bluetooth QSTAR 818XT GPS Bluetooth Campark Xtreme I+ UHD 4K 2021(cheap) 2.5mm Mic input is key and Wireless remote 2.5mm to 3.5mm Adapter for Fuji Film camera's to support 3.5mm Mic 16ft 3.5mm Single Head Lavalier Lapel Microphone Omnidirectional Condenser Mic
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06-27-2021, 05:50 PM | #33 | |
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@timurrrr a few questions on your setup:
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06-27-2021, 06:10 PM | #34 | |
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85 RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's |
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06-27-2021, 07:15 PM | #35 | |
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85 RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's |
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06-27-2021, 08:31 PM | #36 | ||
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The OBD-II protocol doesn't allow you to query data nearly as frequently as what is already available on the CAN bus for passive listening. Quote:
As I use an external sound recorder, I need to swap the audio track in the video, so I need to have the video on the laptop at some point anyways. I also do some brightness/contrast correction as needed. It is a bit of a voodoo dance to go through the whole thing, but once I did it twice, it became easy. I believe RaceChrono supports pulling the video from some GoPro's automatically, but I never tried it. You may want to check the RaceChrono tutorials. |
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06-27-2021, 11:05 PM | #37 |
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@timurrrr I've got a few questions on the Racechrono logger if you happen to know the answers.
I'm seeing that the experimental CAN channels are based on the PID format. I'm assuming these are standardized PIDs for the GT86/BRZ, similar like OBD2 where it is known you can request A and it returns the vehicle speed and is also consistent across the models/years/calibrations? The Tactrix 'method' of logging seems to be somewhat similar to the CAN method, from what I understand how it differs is that it reads memory addresses directly, but these addresses change from every calibration (you can't use an A01G address set on a K00G for example). An example snippet for A01G is below: Code:
paramname = IAM paramid = 0xFFF8119C isfloat = 1 paramname = MAF_V paramid = 0xFFF842AC databits = 16 scalingrpn = x,0.000076293945,* |
06-28-2021, 12:48 PM | #38 | |
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Why not just use the CAN PIDs with OBDLink MX+? |
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The Following User Says Thank You to timurrrr For This Useful Post: | DarkSunrise (06-29-2021) |
06-28-2021, 12:51 PM | #39 | |
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The might be minor differences in low level PIDs between model years / trims (e.g. I know that automatic and manual NC Miatas have transmission-specific PIDs), but the most important PIDs should be the same. |
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06-29-2021, 10:20 PM | #40 | |
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Also this is slightly off-topic but RC is the only Android app that can utilize CAN PIDs at the moment? |
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06-29-2021, 10:39 PM | #41 | |
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85 RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's |
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