This is the robot I quickly built to demo the Low Voltage Motor Driver. If is based off the Mr. Basic platform and MSP-430 Launchpad. It has a 6.4V lithium battery as the main power source which feeds into the voltage regulators on the Launchpad.
For direction control a top mounted servo spins a Sharp gp2y0d810z0f IR sensor. The sensor has a single data line which is pulled low when a object comes within 10cm of the sensor.
Most of the code for the hardware is already written. Just need to finish the controls and it will be ready for a video.
Here is a link to the code’s page.
I will be uploading a video demoing the code. Have to build a tiny robot first.
Here is the Booster Pack built. Tested and it works! I will be posting the code tomorrow after I clean it up some. Includes PWM for both channels and encoders (untested however). I will release a version with and without the encoders.
They just arrived today! This weekend I will solder one up and if it works I will start selling them.
I finally think I have a version of the motor driver that I like. I tweaked the traces around the 470uF cap to make the ground path better. I also changed the nSleep jumper header from a 2-pin to a 3-pin. The user can hard wire the nSleep high or low.
I finished up the PCB for the Motor Controller Booster pack. The PCB is all open source and you can download the files on the project page.
This is a Low Voltage, 2A motor controller BoosterPack for the Ti LaunchPad. So far I have not found a motor controller yet so I decided to make one. This is the first in many BoosterPacks I will be designing and selling. It uses the Ti DRV8833PWPR Dual H-bridge Motor Driver chip. The chip is capable of 2Amps per motor channel and a motor voltage from 2.7V to 10.8V. Logic voltage for the DRV8833 is 3.3V which makes it a perfect match for the MSP-430 LaunchPad.