SpeedyBee F405 V4 Flight Controller Stack:30x30 Bluetooth Stack with 4in1 55A ESC Board,Wireless Betaflight Configuration,Blackbox,Barometer for DJI Air Unit FPV

Worked as described. Will buy others.

Alright it was my fault, some how a tiny tin spot was bridging the positive and ground pad on reciever which prevented the FC from turning on

The package this comes in is great for the price. You get tons of extra screws, gummies, and nuts. I used this on a racing 4s setup and it worked amazing. At one point I got my drone stuck in a tree 60ft up, and the Bluetooth was able to connect to my phone even at that height. My first setup was done through beta flight, just to ensure there was no possibility of it bricking through Bluetooth. Once I was done with the initial setup, everything else I did through the app. It’s a great little stack, tons of features and definitely worth it.

The soldering pads are perfect for the size of the FC. I like that it can handle 6s, but I will be using 4s primarily. Be carefull with plugging the ESC to the FC cause the pins can bend, it happened to me and I didn't get any power to the FC board. I had to use two metal dental picks and adjustable magnifying glasses to fix the two bent pins. Make sure you plug in the connection as straight as possible.

Good little board that is best used for small quads. I put this in a 500 size quad and it just could not quite handle stabalizing it no matter how i changed the settings in Betaflight. Found an Arducopter load which flashed perfectly and was able to actually get the quad off the ground. Unfortunately even then have a tail wag that I just couldn't quite get fully rid of.....Stack may just be too small to support Vtail Quadcopter correctly, but it did get it in the air and at least flyable without crashing. I'm not dinging the software or Assembly or the value for the money. My gripe is about the quality. after about 2 months the USB port just broke off the board and now have no way of hardwiring back to pc. Have to use Bluetooth only now. That port was not under any type of extreme pressure and I have never broke a USB port right off a board before. on any project Just bad solder joints, as no damage was done to the pads. Little chicklets way to close to the legs on the USB port so not going to try and Micro solder port back on. Its a shame all the work that was done to solder everything to the board and I do like the features. Its still usable but I don't like the concept of putting all eggs in one basket...Unfortunately durability is what I can't give 5 stars for. Unfortunately past return warranty. Hopefully just a 1 in a million defect.

It's light weight and does everything I want it to do. I especially like the ability to hook up to it with the Blue Tooth on my android phone and change settings in the field. Some have said that changing the settings like this might corrupt the settings and put them all back to factory default. I haven't experienced this myself.

Sometimes the leds come on, sometimes they dont. Theyre by the same company so I guess no surprise there. Sometimes all motors work fine, sometimes they dont. In betaflight if I use the reciever to test function by raising the throttle and pull throttle back down, props keep spinning more and more as if the props were it would just take off flying on its own unless it gets disarmed. All in all, never again from this company, from the dumb capacitor placement, to the wonky functionality of their equipment.

Great for beginners. Keep in mind that the lead poleratry is reversed and that fc can’t take much current. I fried the fc trying install reviver for fly sky. But it worked fine if you plug in DJI air unit and sync a DJI controller. Also a side note I did get to power on in the photo but I removed it to a different uart to try get to talk to the fly sky remote. That’s when the fc completely died. Also instructions I found on Amazon in additional details for power cord layout. When it’s working it great for tuning through your phone, great for when YouTubers make you afraid of lipo batteries. You don’t have to take it in the house and risk burning your house down as long you have your smoke stopper.