# Drone Stuff ## Uses see [[Photogrammetry]] ## Drone GoFilm 20 1. I open app.betaflight.com in Chromium 2. I connect the drone to the computer with USB 3. The app sees the usb device as "Betaflight STM32F405 ACM1". I connect 4. the app displays an error saying "The firmware on this device needs upgrading to a newer version. Use CLI for backup before flashing. CLI backup/restore procedure is in the documentation. Alternatively download and use an old version of the app if you are not ready to upgrade." 5. Documentation search starting here https://www.betaflight.com/docs/development/Cli#backup-via-cli 6. entering commands in the CLI tab does not seem to do anything. 7. I try a different cable. no change. 8. I will boot up my old macbook, install betaflight on it (perhaps an older version?) and try there. 9. oh, I installed betaflight on the pc using `rpm-ostree install FILE`, and it launches, and I think it can see the drone usb device, but it can't connect. Some kinda chrome error. 10. betaflight on the mac can see the drone! and i don't have to fuss with firmware apparently 11. and i've apparently bound the drone to the boxer! The left-most toggle switch is ARM btw, and none of the other toggles do anything yet. Up is armed, down is disarmed. 12. and the drone battery cell 1 is completely dead?? it won't power my voltage meter at all. Maybe I should check it with a multimeter... 1. all 5.192V 2. cell A: 0.663V 3. cell B: 2.188V 4. cell C: 3.700V 5. cell D: 5.225V 13. i really need a balancer / charger. and maybe a better 4s pack for the drone, that discharges more balancedly. ### Drone Battery The battery I got from Caddx has a "XT30U-F" output and a JST-XH (5 wire) input ("balance lead"). ## Radio Controller RadioMaster Boxer ### Radio Battery "2S 7.4V 6200mAh Lipo" with XT30 and a JST-XH (3 wire) ## Goggles Avatar Goggles X need power input of 7-26V(2S-6S) and the SD card slot supports up to 256GB has a power cable with an XT60 connector ### Goggles Battery - [ ] #project #fpvdrone buy a battery for the goggles - [ ] #project #fpvdrone buy a charger for all three batteries ## Batteries | purpose | drone | radio | headset | | ----------------------- | -------- | ----------- | ------- | | cell configuration \[S] | 4S | 2S | | | \[C] | 150C | | | | \[Ah] | 0.650 | 6.2 | | | nominal voltage \[V] | 14.8 | 7.4 | | | \[Wh] | 9.62 | 45.88 | | | brand | CaddxFPV | Radiomaster | | | chemistry | Lipo | Lipo | | | charge cutoff \[V] | 16.8 | | | | connector | XT30 U-F | XT30 U-F | XT60 | | charging current max | | 2.0A | | If we don't have C of the battery, how to determine charging parameters? ## Charger [MaxAmps chargers](https://maxamps.com/collections/lipo-battery-charger/products/lipo-battery-charger-isdt-p30-dual-8s-dc-charger) start at $350 [This one](https://www.newegg.com/p/300-05V6-00022) from Newegg is $250