Mini-bot Build Part 2 – Wiring

It’s not uncommon for video viewers to make suggestions to projects and since this entire project was based on viewer demand I’ve once again listened to some input. YouTube viewer Pete Prodoehl suggested that I use the DRV8835 Dual Motor Driver Carrier from Pololu instead of the motor driver shield that was using. I ordered one from Pololu and two days later it arrived in the mail. In this week’s video I removed the old motor driver and installed the new one which takes up less that half of the space the other one did. This makes more room on the perfboard so I decided to mount the battery in the available space.

Another suggestion from YouTube viewer cfavreau was to use a 5 mm LED as a low friction tail for this little tail dragger robot. I’ve since installed one.

Thanks guys!

Here’s a parts list for that parts I’ve used so far. They can be purchased from Pololu.
Prices are as of 5-2015

Item #   Item Description                                                                                Price US$

2356   14×4.5mm Wheel Pair for Sub-Micro Plastic Planetary Gearmotor     1.95
726      Maxbotix LV-MaxSonar-EZ1 Sonar Range Finder MB1010             24.95
1939    USB Cable A to Micro-B, 5 ft                                                               2.49
965      0.100″ (2.54 mm) Breakaway Male Header: 1×40-Pin, Straight          0.99
2358    136:1 Sub-Micro Plastic Planetary Gearmotor 6Dx19L mm              11.95
3101    A-Star 32U4 Micro                                                                              12.75
2135    DRV8835 Dual Motor Driver Carrier                                                    4.49

The 3 Volt coin cell batteries and the dual bettery holder are from SparkFun Electronics

PRT-00338   Coin Cell Battery – 20mm (CR2032)                                          1.95
PRT-12618   Coin Cell Battery Holder – 2xCR2032 (Enclosed)                     1.95

The perfboard is from Radio Shack.

Here’s the wiring diagram:

Mini-bot wiring diagram


This week’s video. Keep on hackin!

About Dino

Self taught electronics and hardware hacker.
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