Posts by Grant

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Control a GoPro remotely using a CamDo Bullet and RC switch

Posted by Grant on 13 September 2016

When capturing photographs of wildlife, it is not always feasible to be close enough to trigger your camera with a standard wired remote. In these cases, using an RC transmitter and receiver pair would be ideal, but most cameras and their remotes do not accept hobby RC signals. This blog post, written by CamDo, explains how to use one of our RC switches with a built-in relay and their Bullet wired remote interface to trigger a GoPro camera from an RC transmitter from hundreds of meters away. The setup can be used with any standard RC transmitter and receiver pair, and you only need one pair and one RC switch to control several cameras at once.

Pololu ball casters used as "feet" for quadcopter

Posted by Grant on 21 June 2016

One of our customers, Jeff, found a creative way to use some of our 1″ ball casters. He was having a problem with the legs of his quadcopter “grabbing” when he landed, so he attached a ball caster to the end of each leg. You could read more about his modification and find more pictures of his quadcopter in his post on the RCGroups.com forum.

MSOE underwater robotics ROV

Posted by Grant on 8 April 2016

The Milwaukee School of Engineering (MSOE) underwater robotics team has been building remotely operated vehicles (ROV) to compete in underwater ROV competitions for several years. In the past, they have created custom motherboards that our 18v15 Simple Motor Controllers could plug directly into:

Custom Simple Motor Controller motherboard for MSOE underwater ROV.

The team is now using our newer G2 High-Power Motor Driver 18v17, which allowed them to save space in the newest iteration of their motherboard.

Custom G2 High-Power Motor Driver motherboard for MSOE underwater ROV.

For more information and updates, check out the group’s Facebook page.

3D-printed mecanum wheel rover

Posted by Grant on 9 February 2016

One of our forum members, gchristopher, posted about his 3D-printed mecanum wheel rover. The rover uses our D24V10F5 5V regulator and some of our TB6612FNG dual motor drivers.

You can find more information on his blog. Additionally, you can find the CAD files on the Thingiverse page, and his original forum post on our forum.

Grant's mini sumo robot: Rattata

Posted by Grant on 26 January 2016
Grant's mini sumo robot: Rattata

Remember my super cool sumo robot? My sumo robot is different from regular sumo robots. It’s like my sumo robot is in the top percentage of mini sumo robots. Continued…

Bohlebots at the German Open in Robocup Soccer 1v1

Posted by Grant on 9 June 2015

In March, I wrote a blog post about the Bohlebots robotics team winning the West German Robocup Soccer 1v1. Since then, the Bohlebots team has gone on to win first and third in the German Open Robocup Soccer 1v1 with their two robotics teams.

Bohlebots’ soccer robot.

Good job Bohlebots!

Grant's line following robot: Pinto

Posted by Grant on 27 May 2015
Grant's line following robot: Pinto

My entry for the LVBots line following competition last month was a rehash of my line following robot from last year, Pinto. Unfortunately, my robot from last year robot never made it to the competition: while trying to get it to work last minute, it literally vibrated itself apart. I did not execute my ideas very well, but I still think my overall plan was not a bad one. Since I still had all the parts, I decided I wanted to revive the robot and try to follow through with my plan. Continued…

Bohlebots wins West German Robocup soccer 1vs1

Posted by Grant on 6 March 2015

Bohlebots, a team of students in Germany, won the West Germany Robocup soccer 1vs1 open league for a second time. They sent us an email that shows how their robot uses three omni wheels spaced evenly about its round chassis, which allows their robot to move in any direction. The omni wheels are actuated by some of our 9.7:1 25D HP metal gearmotors, which are each controlled using one of our VNH5019 motor driver carriers.

Check out this highlight video of their robot in the competition:

Good job, everybody, and good luck!

The Bohlebots team.

Charlie, the cricket

Posted by Grant on 6 February 2015

Jonathan Spitz made a fun robot he calls Charlie, the cricket. In his LinkedIn post, Jonathan explains that Charlie uses four motors. Two of the motors are used for walking and the other two are used for sprawling. The four motors are controlled by two Baby Orangutans, which also handle the closed-loop feedback from encoders to free up processing on the Arduino Micro.

The insides of Jonathan Spitz’s Charlie, the cricket.

Charlie’s novel propulsion system of spinning legs that can be tilted was inspired by one of Jonathan’s colleagues. They allow Charlie to traverse difficult terrain as shown in this video:

Charlie is a follow-up design on an earlier robot Jonathan made named Billy, the blue beetle, which was larger and lacked the ability to sprawl. Charlie also was designed to have the ability to drive on its back, which is something Billy could not do. You can read about Jonathan Spitz’s experiences with Billy in his LinkedIn post.

Custom car ventilation system with Pololu servo controller

Posted by Grant on 15 January 2015

One of our customers, Gary, made a heater box and ventilation system for a custom car and posted about it on our forum. His system uses several servos controlled by one of our Micro Serial Servo Controllers. The servos actuate the different valves in his air system to allow him to control the air source as well as things like the defog/defrost system.

Some of the actuated valves on a custom heater box made for a custom car by Gary.

Gary chose to use our board because it allowed him to stop sending signals to the servos when they are not moving. For others considering using our Micro Serial Servo Controller in their next project, we recommend using our Maestro servo controllers instead. They have the ability to stop sending signals to the servos like the Micro Serial Servo Controller and are newer and better in almost every way.

You can find more pictures and read more about Gary’s heater box and ventilation system in his post on our forum.

New Products

Romi Chassis Motor Clip Pair - Black
VL53L0X Time-of-Flight Distance Sensor Carrier with Voltage Regulator, 200cm Max
Romi Chassis Base Plate - Red
Power Distribution Board for Romi Chassis
Romi Chassis Kit - Black
Romi Chassis Motor Clip Pair - White
Motor Driver and Power Distribution Board for Romi Chassis
FEETECH FS90 Micro Servo
Romi Chassis Ball Caster Kit - Pink
Romi Encoder Pair Kit, 12 CPR, 3.5-18V
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