quite some progress, I built the speedometer, printed the black framing that holds the 7 segment display, wrote the code to synchronize it with the flux capacitor, worked on this the whole week.
- IR remote now has slave and master mode access for the capacitor. Master drivers the speedometer as slave and plays the speed sequence by bluetooth (flux cap. sends the speed increase / decrease wireless and the speedometer updates the display)
- Slave mode has the speedometer master. GPS inside gets the NMEA data parsed and ground speed extracted at 1Hz, displayed on the led display. Decimal point indicates if a GPS fix has been found.
- Added a boot sequence on the display just because, tests all segments, counts from 00 to 99 quickly, sci fi blinkies **** me likey
- Cut the 10mm thick acrylic (3/8" is supposed to 9.5mm is). Took 3 passes on the laser, flatten the sides (because the laser beam + focus makes angled cuts by definition and the deeper the more you see it). Painted the sides in black
- reworked the led sequence code, now properly emulating the 4 light bulbs made out several leds with side dimming and PoV fade out when it transitions to the next step
- Noted that the flux capacitor is going
BACKWARDS when Doc & Marty visit the delorean in at the cemetery (!) possibly because it's in the past. Added a mode with the IR remote that trigger "go to the future" or "back to the future" quotes when you swap forward/backward modes
- speedometer runs on a arduino zero clone on which I've added an additional serial port so I can have USB (CDC) port + bluetooth module + GPS (serial as well)
Used as many drawer parts I had in stock, feels good to use what you've stored for those "just in case moments". Speedo runs on a 16340 cell. Recharge port + latching switch at the rear
3D printed display frame, 2 coats of automotive, 2 coats of flat black
Added the remaining ledstrip on the cover for back lighting during the time travel sequence
IR remote got DYMO labelling for vintage look, plus a few stickers to remember what does what