1S Toothpick v3 - Exploring the limits of 1S Cont..

By alwaysbless on Jun 17, 2020

13  462  2

The BEST 2.5" 1s toothpick I've built to date.

Changes In v3:

1) FC has been upgraded to the Happymodel Crazybee F4 Lite w/ Integrated Frsky RX and 25mW VTX
2) Camera has been upgraded to the Runcam Nano 3
3) Motors have been upgraded to GepRC GR1102 14000kv (Slightly heavier but faster speeds and superior durabilty vs HM ex1102)
4) Props have been upgraded to HQ T65x3 (.2g heavier vs bi-blade options but 33% more surface area)
5) JESC 48Khz and RPM filtering (Details @ https://www.rcgroups.com/forums/showthread.php?3374061-JESC-Surgical-Precision-with-Rpm-Filter-on-BLHeli_S)
6) Flying 520mah 1s GNBs for 6-7 min of mixed flying

Build Notes:

1) Almost no soldering is required to complete this build other then the motors which is probably the hardest thing to do due to the size of the tiny pads. To make it easier id advise pre-tinning all motor pads / motor wires prior to soldering to the FC. Itll make it much easier for the two to join cleanly and there is not a lot of room for error due to how close together they pads are.

2) Due to the short length of the cameras 3p cable you are limited in terms of which direction you can mount the FC/Canopy. I had to rotate the FC 180 degrees in Betaflight so that the FC's USB is facing the front other wise it wouldve been facing one of the sides and the balance of the frame wouldve been slightly off.

Betaflight:

1) Per Joe Euclid creator of the JESC FW and BF Dev - w/ F411 CPUs running the 48khz mod its best to use 4k/4k Gyro/Pid Loop Update frequncies and DSHOT 300 (https://www.rcgroups.com/forums/showpost.php?p=43609211&postcount=1028)
2) Since the FC is rotated you will need to do resource mapping in order to change motor layout to match the FC's orientation (https://oscarliang.com/betaflight-resource-remapping/)
3) Depending on the TX you use and the FW version your FC is running there are some bugs in the latest version of Betaflight that may affect Frsky SPI rxs and cause lockups in D16 mode (https://www.rcgroups.com/forums/showthread.php?3244881-Dropouts-Lockups-In-D16-Mode-With-Telemetry-On-In-SPI-Receiver-Flight-Controllers)

Flight Footage:

Coming soon

Photos

Discussion

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DrewFPV   Jun 18, 2020  

I love toothpicks

alwaysbless   Jun 18, 2020 

Yep me too my 1s builds are my favorite out of all

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