Here ya go
https://www.ebay.ca/itm/Genuine-OrangeRx-T-SIX-2-4GHz-6CH-Programmable-Transmitter-Support-DSM2/153317603154?hash=item23b270f752:m:mq4UuzdUbJAUnoGAc4W2Yvw
OK, so you ordered the model with DSM2/DSMX receiver. This is Spektrum protocol so you only have a couple options. Firstly is the OrangeRX T-SIX transmitter which is quite economical but discontinued and hard to find. The second option is an actual Spektrum transmitter and you will have a...
Firstly, I'm assuming you're referring to controller as in transmitter. To guide you in the correct direction, we need to know which model you ordered (which receiver), Spektrum, Flysky or FRSky? (Sorry, your link doesn't work)
There's always the Wizard 220X, everything needed to fly including radio and battery
https://www.banggood.com/Eachine-Wizard-X220S-FPV-Racer-Omnibus-F4-5_8G-72CH-VTX-30A-Dshot600-800TVL-w-iRangeX-iRX-i6X-RTF-p-1153989.html
There's lots of "how to build a quadcopter for $99" on the internet
http://excesstext.com/2017/07/17/building-the-99-pro-fpv-racing-quadcopter/
There's also a thread here
http://quadcopterforum.com/threads/uav-futures-inspired-99-build.15366/
Yes, I'd be interested to find out what components you are using. LibrePilot is very outdated and you'd be so much better off using Betaflight if possible.
What ESCs are you using?
Are you making your connections from the fchub to F405 by the cable or by hardwiring?
Is this issue happening in Betaflight motor testing tab?
Have you tried switching ESCs to see if the problem follows?
Hi Marc, welcome to the forum. I do a lot of building, just not a lot of experimenting. Although yeah, I do use a GPS module on most of my birds to use take advantage of Betaflight Rescue Mode (RTH)
Yes, it comes with the Mamba F405 flight controller with Betaflight firmware. Betaflight is so advanced now that there isn't much to do to get in the air in the way of configuration. Most of my birds are flying on default PIDs with just small tweaks to the rates
I use Flynoceros frames exclusively, the new Tank Racer 2 would be perfect for those EMAX motors. This frame is almost indestructible!
https://theflynoshop.com/product/tank-racer-2/#hd-mounts-optional
Yep, this is the one that all the cool kids are buying right now. It is a complete FPV quad and getting fantastic reviews, you'll just need a transmitter (radio) with receiver, FPV goggles and a bunch of batteries (4S 650 or 850 mah would work great).