Bluetooth GPS for Car

thingiverse

This is a great opportunity to upgrade your Android experience with a sub $50 Bluetooth GPS device that works seamlessly with any NMEA-supported lap timing app. I'm thrilled to share my custom-designed case, and my friend aidandj deserves all the credit for expertly wiring everything together - you can read more about him in this forum thread link: <https://www.miataturbo.net/race-prep-75/sub-%2450-10hz-gps-receiver-82941/#post1202669>. Here are some Android apps that have confirmed compatibility with this GPS receiver: Harry's Lap Timer http://www.gps-laptimer.de/Home.html Racechrono http://www.racechrono.com/ And here are the essential details from the original forum thread: <https://www.miataturbo.net/miata-parts-sale-trade-5/10hz-bluetooth-gps-module-cheap-83431/page3/> Design Improvements Ahead My design is still evolving and will see some updates in the near future. For instance, I plan to switch to acrylic plates on both sides and introduce alternative designs that enable you to easily attach suction cup mounts for added stability. Update 1: Added Suction Cup Mount Files I've uploaded files for the suction cups used - available here: http://www.amazon.com/dp/B00M8C3Q04/ref=sr_ph?ie=UTF8&qid=1425915195&sr=1&keywords=suction+cup Update 2: Design Update v2 The bottom plate has been revised to v2, featuring a laser-cut design that allows for easy installation of suction cup mounts. You can now choose which side is facing up by adjusting the mount. Update 3: GPS Test Video Released You can watch the GPS receiver in action on a Mazda Miata - check out this video shot via the rear view mirror: <https://youtu.be/7RgIXhPY_k8> Update 4: Test Course Video Release Catch a glimpse of the GPS receiver working its magic on a test course here: <https://youtu.be/qedQlC9anxE> Now, let's move to the nitty-gritty instructions for assembling this impressive project. **Assembly Parts List:** 1. HC-05 (or HC-06) module with 5v adapter board * Order from: http://www.ebay.com/sch/?_nkw=hc-05+module+5v 2. RYN25AI GPS Module * Get the one with an EEPROM; you can order from: http://www.ebay.com/sch/?_nwk=RYN25AI 3. Adafruit USB Mini breakout board (Alternative: Pololu) * Order from: http://www.adafruit.com/product/1764 (Adafruit) https://www.pololu.com/product/2593 (Pololu) 4. Double Length 0.1" Pitch Header Pins * Available at: http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&keywords=S1232E-36 5. Four 4-40 Screws 6. Four 4-40 Nylock Nuts **Soldering Bluetooth and GPS Together:** When connecting the Bluetooth and GPS modules, ensure that you use double-length header pins (0.1" pitch) to match the pin layout on both devices. The antennas for the Bluetooth and GPS modules should be facing in opposite directions when stacked together. **Preparing the USB Breakout Board:** Drill out the mounting holes on the circuit board to enlarge them to 1/8".