Posts tagged "community projects"

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Reaper puppet master Halloween prop using a Mini Maestro 24

Posted by Jon on 14 October 2016

If you are looking for some inspiration for scary Halloween prop ideas, check out the truly creepy reaper puppet master that forum user rasco66 built! The prop is a tall, menacing installation: a grim reaper with glowing red eyes and outstretched hands overlooks a dark stage containing a lone skeleton. Once activated, the reaper commands the puppet to dance and animates its movement to a cover of Blue Oyster Cult’s Don’t Fear the Reaper. The skeleton animation is achieved with seven servos and a linear actuator; a Mini Maestro 24 controls all of the servo sequences and is triggered by a PicoBoo Max, which also coordinates the music, strobe, and linear actuator. You can watch a video of the prop on YouTube or read more about the project, including some code, in this forum post.

By the way, there are still 10 days left to take advantage of our Halloween sale and save on parts for your own grim reaper puppet master or whatever other terrifying thing you want to create (but you really shouldn’t wait that long if you want something done by Halloween as these things almost never work on the first try!).

Remote control food

Posted by Claire on 6 October 2016

With Halloween on its way, and trick-or-treating eminent, you might be asking yourself if there are any alternative uses for the mountain of candy bars your kids will soon be bringing home. Well, customer Mike Kohn, whose projects we previously blogged about, has a solution for giving new life to not just candy, but all sorts of unwanted food items: remote controlled food!

For this project, Mike ditched plastic and aluminum and tried out a sampling of more savory chassis materials like candy bars, a carrot, a bell pepper, a grapefruit, and a chicken sausage. The candy bars, carrot, and sausage were used for four-wheeled differential drive cars and the pepper and grapefruit were used for boats. All the vehicles were actuated by a pair of micro metal gearmotors and the cars also used our 32mm wheels. Below is a picture of one car made with a 3 Musketeers bar.

Mike also wrote his own firmware for decoding the IR signals from a Syma S107 controller. You can find out which foods made the best chassis and plenty more information about the vehicles, including a parts list, schematic, and several other videos, on Mike’s website.

RC wildlife photography usingTReX motor controllers and RC switches

Posted by Jon on 3 October 2016

Wildlife photographer Stéphane Simoëns uses a remote-controlled, camouflaged vehicle to bring his camera closer to animals without scaring them away. The vehicle is a custom-built, metal-framed, 4-wheeled chassis that is controlled with a pair of our TReX dual motor controllers. One TReX drives while the other provides tilt control for the onboard camera. The vehicle also features three of our RC switches; one switches on and off the video transmitter and the other two control camera shutter and focus. You can find more information about this project in Stéphane’s forum post.

Birds at the beach.

Camouflaged RC photography at the beach.

Animatronic tentacle mechanism using Pololu Universal Mounting Hubs

Posted by nathanb on 14 September 2016

While our Universal Mounting Hubs are mainly intended as general-purpose adapters for motor shafts, it seems that they can also be used to help build a cable-actuated animatronic tentacle. Joshua Vasquez posted an article on Hackaday about his two-stage tentacle mechanism with “vertebrae” made from Universal Mounting Hubs and laser-cut Delrin pieces. (We didn’t do the laser cutting for this project, but our custom laser cutting service might be interesting for anyone wanting to make similar parts.) If you want to simultaneously impress and creep out your friends this Halloween, this seems like an interesting project to try!

Read more about Joshua’s project on Hackaday.

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.

Video: Smart lane changing Zumo robot

Posted by Claire on 7 September 2016

Forum member WaterBoy23 recently shared his robot which expanded upon the line following capabilities of our Zumo Robot for Arduino by adding in lane changing capabilities. The robot changes lanes when it detects a vehicle ahead of it, and is programmed to either pass the vehicle or return quickly to its original lane if it detects oncoming traffic. His robot uses two Arduino Uno boards, one for following the line and the other for reading ultrasonic position sensors. More information about the robot can be found in WaterBoy23’s post on our forum.

A Raspberry Pi robot without a HAT

Posted by Kevin on 15 August 2016

Using an Arduino shield or Raspberry Pi add-on board is often a quick and convenient way to get started on a robotics project, but for maximum flexibility, nothing beats building your own system from standalone boards. Rud Merriam’s Hackaday article describes the design of his Raspberry Pi-controlled robot, for which he opted to use separate modules instead of daughterboards on the Pi, and mentions some of the trade-offs involved in making that decision.

The robot is built on a Wild Thumper chassis and uses a Maestro USB servo controller and two Simple Motor Controllers to interface the Raspberry Pi with the robot’s motors and actuators. In Rud’s writeup, he explains how he made use of some of the more advanced features of the Maestro and SMCs, like using servo channels for general-purpose I/O and setting up daisy-chained serial communications. Check out the full article for all of the details.

Pololu relay module used in custom ESP8266-based plant watering system

Posted by Jon on 20 July 2016

Forum user LuisLabMO posted about his WiFi-controlled plant watering and monitoring system. The system uses SparkFun’s Blynk ESP8266 board to read various sensors that monitor sunlight, moisture content of the soil, and detect the level of water remaining in the watering reservoir. The Blynk signals our 5V relay module to activate the system’s water pump, which irrigates the plants through a drip system. You can read more about LuisLabMO’s watering system in his post, which also has a link to his project page and GitHub repository.

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 forum.

Tru.D 3D

Posted by Jon on 4 May 2016

On Monday, Colin McGinn launched a Kickstarter in order to create a 3D short film using Tru.D 3D, which is a volumetric display system that he designed and patented. The system quickly feeds 3D volumetric objects into a specific viewing area, and each 3D piece forms a frame of an animation to tell a story that can be viewed from any angle.

Included among the Kickstarter rewards is a mini Tru.D 3D machine, which uses our micro metal gearmotors and magnetic encoders to perform a short, two-second animation. The machine is small enough to hold in your hands, and backers have the option of choosing from one of three different animations.

You can find more information on Colin’s project, including the full digital version of the short film, on his Kickstarter.

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