Reddit reviews Emgreat Motor Robot Car Chassis Kit with Speed Encoder wheels and Battery Box
We found 4 Reddit comments about Emgreat Motor Robot Car Chassis Kit with Speed Encoder wheels and Battery Box. Here are the top ones, ranked by their Reddit score.
Mechanical structure is simple, very easy to install. Comes with tachometer encoder.Can be used with other devices to realize function of tracing, obstacle avoidance, distance testing, speed testing, wireless remote control.With four on the 5th battery compartment , convenient to the entire system power supply. At the same time with a switch for start and stop. No add-on is very convenient , the whole system is highly integratedIdeal for DIY, It is an integration solution for robotics learning.An educational kit for beginners to get hands-on experience about programming, electronics assembling and robotics knowledge.
Start with one of these for a chassis.
Add an arduino, some wires, some sensors. You're good to go.
What's the goal of the workshop? To introduce programming? To introduce electronics? Does your target audience already have these basics down and you just want to cover some advanced control system topics?
(From experience these things tend to forget scope and leave attendees confused or bored. Or both.)
If budget isn't an issue and you don't want to focus on hardware buy some Pololu 3Pis: Arduino compatible they can work with C, C++, graphical programming and many languages.
Most of the time budget is an issue. If you're EE, take a look at the Harvard AERobot and build a few, they're pretty simple and cheap. (Or buy some: store link) They came from the Afron challenge:
http://robotics-africa.org/2014-design-challenge
No money and PCBs are too much work? Arduino + scrap electronics. CD drives, computer fans, etc. Or try this chassis, use a cheap motor driver design. I've done a similar workshop with cardboard robots, Arduino derivatives, motors pulled from scrap or surplus and simple IR reflectors bought in bulk (TCRT5000 are 10/$1 on ebay). Using a DC motor, a rubber band and food skewers in plastic straws you can make pulley systems that are cheaper than gearboxes. But these are neat. I didn't want programming to be a drag so we used Ardublock.
[Also: your Facebook group is closed, I couldn't see posts to make more accurate recommendations]
I found this kit: http://www.amazon.com/gp/product/B00GLO5SMY?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s01
For $12 I couldn't say no. I got lots of stuff at radio shack's close out so I'm thinking of using a yun and motor shield to make a remote for it.
Just going to throw some ideas for products at you, please note I have no relationship whatsoever with them, I just googled for the kind of thing I think you're looking for.
Dirt cheap option: https://www.amazon.co.uk/Motor-Chassis-Encoder-wheels-Battery/dp/B00GLO5SMY
Slightly better option: https://www.dfrobot.com/product-367.html
Quite a nice option: https://www.dfrobot.com/product-426.html
Basically look for robotics platform/kits/chassis and not for RC cars for this kind of thing.
A few points, you probably want geared motors with encoders as the drive mechanism. Servos typically aren't continuous rotation. If you want the kind of wheel configuration of a road car along with encoders which are almost essential for autonomy I think you'll have to look at a custom build. Also if you're looking at self-driving then have a look at LIDAR scanners, not cheap but they'll allow you to do far more than an ultrasonic sensor.