Ive been itching to use RaceChrono for a while based on it's features, but didn't like the fact that it would use your phone's GPS (one sample a second so accuracy is questionable). I have been using a QStarz laptimer for a number of years, works well most of the time but accuracy is only 10Hz (0.1s) and sometimes the GPS would drift .... track log would show i'm driving through the spectator area between turn three and four, or each lap would be shifted by a couple of meters, so GPS accuracy was another issue with the QStarz.
My ideal setup with RaceChrono was to use an external GPS antenna which is better than the one in the smartphone, and a GPS receiver itself with better accuracy and sensitivity. The next best thing would be 20Hz receivers such as the the VBOX Sport 20Hz GPS, looked at the price and said nope!
So I ended up building one instead.
I used it at two separate track events, first time the USB cigarette power adapter kept on popping out of the socket so cutting power to the GPS receiver. Addressed that issue for the next time, not a single problem, even when the weather got really bad and started to rain heavily. Posted a few pics of the device on Instagram and Kevin here saw it and liked it.
I lent out the device to him for this past OTA event, more to give it a good shakedown to see if it works reliably, and it did. Heard that there were others interested in this GPS receiver.
I plan on building two more for sure, but won't start building these until this fall ... just when track days are starting to wind down for 2018 .
If you are interested in one, reply back here along with your 'interest level'. I don't have an idea on cost yet but it'll be much less than that VBOX. Note that this device I built does no logging to an SD card for example, it's just a receiver and the app on your phone would be the one doing the logging.
My ideal setup with RaceChrono was to use an external GPS antenna which is better than the one in the smartphone, and a GPS receiver itself with better accuracy and sensitivity. The next best thing would be 20Hz receivers such as the the VBOX Sport 20Hz GPS, looked at the price and said nope!
So I ended up building one instead.
I used it at two separate track events, first time the USB cigarette power adapter kept on popping out of the socket so cutting power to the GPS receiver. Addressed that issue for the next time, not a single problem, even when the weather got really bad and started to rain heavily. Posted a few pics of the device on Instagram and Kevin here saw it and liked it.
I lent out the device to him for this past OTA event, more to give it a good shakedown to see if it works reliably, and it did. Heard that there were others interested in this GPS receiver.
I plan on building two more for sure, but won't start building these until this fall ... just when track days are starting to wind down for 2018 .
If you are interested in one, reply back here along with your 'interest level'. I don't have an idea on cost yet but it'll be much less than that VBOX. Note that this device I built does no logging to an SD card for example, it's just a receiver and the app on your phone would be the one doing the logging.
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