2PCS AGFRC Mini 4A ESC Brushless DSHOT600 BLHeli_S 1S Lipos Super Micro Electronic Speed Controller for RC FPV QAV Drone Multirotor Quadcopter

Nice to find a brushless ESC that works with older radios in the 72 mHz vintage and also with standard 2.4 Gig micro receivers like FlySky's FS2A. And for the price, isn't a bad deal considering these are BL-Heli programmables. You will have to learn to solder connectors on tiny little soldering pads and have the right electrical connectors.

I'm building a single-motor ultra-micro ornithopter and this ESC fit my needs perfectly (they come in a pack of 2 units). Dimensions are true, only 13mm in the longest direction, and only 0.5 grams! Runs perfectly powered by a 1S Lipo. It came flashed with BLHeli_S as described and can be read and configured by the BLHeli Configurator and Betaflight.I knocked off a star because of the documentation. The included manual is generic to the Xeon Run series ESC product line and is not helpful for this particular unit (the XR-4A). The 'diagram' is unhelpful and also wrong, if I wired this unit according to the image it would not work. However the ESC board itself is labeled correctly, with +, -, and S (for signal) on the input thru-holes, and A, B, and C on the motor output thru-holes. That's all the help you get though; there are 4 other solder pads (visible in the product images in the listing) that are unlabeled and I assume for CC debugging / firmware flashing; but there is no circuit board diagram anywhere, even on the AGFRC website.I've attached images of the included manual, and of the ESC unit on a ruler.

Both of these successfully spun my tiny 0802 motors, but died after only a short amount of usage. Both ESCs were tested with multiple motors, and on only 3V on a power supply limited to 2A. No both ESCs only cause the motors to twitch as they try to spin up. They also got hot under very little-to-no load.

The media could not be loaded. The package was already open with wires soldered on! (wouldn’t normally complain about wires, but see the picture )No idea if they work or not, guessing they got sent back for a reason…

Me agrada que sea pequeño, muy difícil soldar para mi, tuve que comprar un soldador de aire caliente y pasta de soldadura a ver si así puedo

Worked just fine

Used for a mini rc airplane. It was tough to know for sure how to wire these up correctly, but they do work. I treated them like servos. Since I was powering my receiver directly with A 1S battery, and these only take 1S anyway, I powered them directly from the receiver.

I have gone through more than 5 of these over a couple of days. They are finicky. Once failed, the motor tries to start but it finally gives up with a couple of beeps.