Tiny Size, Massive fun!
PWM RECEIVER - https://www.banggood.com/Flysky-FS2A-4CH-AFHDS-2A-...
3D PRINTED TANK SHELL - https://www.thingiverse.com/thing:3635486
Step 1: Build.
Building is a simple matter of soldering and cramming everything in! its a tight fit.
Any transmitter and pwm receiver with 2 or more channels can be used as long as it can fit inside and can operate from a 1s lipo, I'm using flysky fs-i6 radio and fs2a receiver.
Leds aren't needed but very useful for dark spaces.
I printed my tank shell in carbon fibre petg but any filament is fine.