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

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.

Used this on my second quad build and the core of the setup. Paired this with DJIs o3 unit, ELRS receiver and remote ID was an awesome combo. Soldering went super smooth with more than adequate pad size for all wiring and programing through the bluetooth app on the fly made things super easy during setup to fine tune my PIDs and rates. Will definitely use their products again in future builds.

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.

After putting this stack on a new 5” build of mine and test flying, there was major back and forth yaw twitches. Tried several trouble shooting methods but the final verdict is a bad gyro and now the FC is a brick :|

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.

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.

Excelente funcionamiento

ordered 2 boards never regretting.was looking for quick mail order board and most times amazon isn't good place to resort too.at first reading reviews was reluctant to get one..had slight issues at first FC would power up but no ESC thought had gotten bad board after read some reviews, but the plug between the 2 boards wasn't pushed all the way in an powered up worked as should...even the 2nd board had issues with plug being pushed in all the way...see where its at easy to do..if run into no power up board check this connection..glad got 2nd board...had HW brand new returned it a replaced it with speedybee never looking back at HW ever..thanks no worries great board..