Otto DIY SMARS Rover

I took the SMARS tracks and wheels, added them to Otto DIY robot How it works Otto DIY needed some new faster way of getting around and borrowed some tracks from SMARS opensource project. He now prefers these to walking.. Part List 1 x MAX7219 LED Matrix 2 x GA12-N20 6volt DC 150rpm Miniature motors 1 x HCSR04 Ultrasonic range-finder module 1 x Noise sensor module (analog output) 1 x BUNDLE of Female to Female jumper wires 1 x Active Buzzer (not passive) 1 x HC-06 Bluetooth module 1 x POWER SOURCE: which ever you prefer, a standard 9volt battery into the Arduino VIN pin will work, or a LIPO battery and a suitable DC-DC converter into the +5v pin, the choice is yours. 1 x DC motor driver (two motor output) : your choice ! 1 x ARDUINO : your choice, either NANO or UNO ! 3D Printing Recommended using an FDM 3D printer with PLA material. Settings to Print your Otto Quad, 20% infill 0.15 mm resolution supports for the feet Only as they need to printed as they are provided I use a RAFT to help stick to the bed, this is optional. Larger items I printed with a rim There should be no need to rotate any parts, print as they are shown. This is an advanced project so for coding and try the other examples you will need Arduino IDE (version 1.8.5 preferably to avoid future errors) Assembly Instructions 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media Otto has an Android APP for Bluetooth control, all information and code can be found in the software folder. I used a 2mm drill bit to enlarge one side of the Track segment as it was a little too tight and would not move freely. For the pin between tracks use the same 1.75mm filament to join them 📷 Image redacted — claim this model to add your own media You can alternative use an Arduino UNO board. We invested lots of time and resources to provide open source code, software and hardware, please support this project by just giving us a ❤ Like and share and you are welcome to be a part of this friendly community of robot builders, teachers and makers. Join today our Otto Builder community