Star Trak - N20 Tiny Trak FPV Crawler Tank

thingiverse

Here is my take on the RC Tiny Trak. It's a first-person view mini crawler that uses N20 gearmotors and Lego tracks. The Bill of Materials is as follows: 3D Printed Parts: 1x Lid 1x Base 2x N20 Stubs 4x Lego Studs The only part that needs supports is the Lid, and there's quite a lot of support required, but it's super easy to remove. Additional Parts: 2x N20 6V Gearmotors. My current model uses 300rpm motors which make it VERY slow but with lots of torque for climbing. 600rpm is probably a better balance ESC(s) to drive the motors. I am using a "Dual Way Bidirectional ESC 2S-3S 5A Brushed ESC Speed Controller" from eBay. I recommend avoiding the Das Mikro 2S6A ESC. They have terrible quality control 1x 2.4GHz Receiver of your choice - this will depend on whatever Transmitter you're using. I'm using the FrSky XMR in this build 1x FPV AIO camera. This model is designed for the LST-S2, but most VM275 style cameras should fit, 2S (7.4V) batteries. The GNB 550mAh 2S battery fits perfectly in this model. You can also fit a Turnigy 950mAh if you don't mind it sticking out the end. 2x Lego x939 Tracks 6x Lego 55981 Wheels 3x M3x12 screws + superglue and soldering skills Instructions Print the above parts. Glue the Lego Studs to the side of the base on the large circular pads (ignore the pads with the hole in). Apply glue sparingly to the N20 stubs and push fit them as far as you can into 2 of the Lego Wheels. Fit your motors, ESC(s) and Receiver to the base. There are many ways to do this. It's up to you how. Power everything up, bind your receiver to your transmitter. Now fit the camera into the lid and connect to the ESC power (most have a 5v BEC on board). Attach the lid to the base with the M3 screws. Any questions let me know!