FPV Controller for Open.HD

thingiverse

First things first: Never heard about Open.HD? Read more about the project on GitHub: https://github.com/OpenHD/Open.HD/wiki. Still have questions? Join our public Telegram group at https://t.me/OpenHD_HDFPV or discuss here: https://discuss.openhdfpv.com/. Before printing any parts, ensure your printer is well calibrated for extrusion factor and dimensional accuracy! Some parts are designed with a tight fit. Additionally, I recommend printing large parts (especially xxxCase and xxxCover) in the same orientation as they will be assembled later to compensate for dimensional errors. To build this project, you'll need these components: * Raspberry Pi 3B+, 4B should also work * Official Raspberry Pi 7" touch display * 2x AR9271 WiFi cards (https://www.aliexpress.com/item/32954949341.html) * 2x USB cables for WiFi cards (https://www.aliexpress.com/item/4000285080584.html) * 2x UFL to RP-SMA pigtails, length 10cm (like https://www.aliexpress.com/item/32983322476.html) * 2x Gimbal Assembly for Frsky Taranis X9D (like https://www.aliexpress.com/item/32843093696.html) * Mini Joystick (like https://www.aliexpress.com/item/4000826192604.html) * Frsky Taranis Transmitter switches (https://www.aliexpress.com/item/33017227469.html) - don't forget to order the mounting tool * Arduino Pro Micro or clone (3V/8MHz version for USB joystick interface), solder two analog inputs directly to the micro (inputs A4 and A5 => pins 40 and 41 on micro) * DIY short Micro USB cable for Arduino (tight space!) * 12mm power push button (https://www.aliexpress.com/item/32989722824.html) * LED voltmeter (https://www.aliexpress.com/item/4000484678860.html) * Extension for Micro-SD card * 3mm LED for charge indication on back * DC jack or 2.5mm version (https://www.aliexpress.com/item/32730354185.html) * DC/DC converter (https://www.aliexpress.com/item/32934802533.html) for 5V supply * Battery Charger (https://www.aliexpress.com/item/4000215082386.html), set to 16.2V/1A output * 4S BMS Board (https://www.aliexpress.com/item/1000005344408.html) * 4x 18650 Li cells, or use Z-solder tags like these (https://eu.nkon.nl/lg-inr18650m36-3600mah-10a.html?___SID=U) * Some M3 DIN 912/ISO 4762 screws in different lengths with nuts * Some M2.5 hex bolts for mounting the Pi and BMS on top of it The complete controller's weight is approximately 1220g, which could feel a bit heavy. To make it lighter, consider reducing the 18650 cell count to 2 or 3. Don't hesitate to ask questions if you're missing something!