STEM

13 posts

Limit Switches for your Lift

I looked around on YouTube for easy solutions to my lift problem: If I wasn’t careful, the lift would go past it’s usable range and break something like a linkage or a gear would pop out. Clearly I needed to add some limit switches to turn off the motor once […]

VEX EDR Ball puncher

My first go at building a robot with EDR. The current EDR competition is Turning Point and one way to score points is to shoot at flags with balls. So of course I started by designing a ball puncher and a mechanism to feed it with balls. One of the […]

Unboxing the all new VEX EDR V5

SYDT, the importers and re-sellers of VEX  in Taiwan sent me this V5 to evaluate and build a robot. I’ll keep you updated on the robot, but here is the first glimpse of the awsome new V5!

Making of 4BDR (Four Bar Double Reverse)

I’ve been asked by quite a few people for a tutorial on how to make the 4 bar double reverse robot (Or rather – the Reverse- Double Four Bar). Seeing that I built it by trial and error, I didn’t take pictures at the time, but I took it apart […]

Auto-Stacker

After trying to auto stack with the 4BDR design, we decided that it was too difficult to get the bonus hubs with that robot. (It was a very nice design though). I saw a YouTube video of another auto- stacker, which led to this design. No fancy four bar lift, […]

Stable Reverse- Double 4 Bar Prototype

The previous two motor model worked, but wasn’t very stable. It was very difficult to control and it flexed a lot. Not really something I’d recommend going to a competition with. The main problem isn’t making the mechanism work, it is making it work with the parts available in the […]

VEX IQ reverse- double 4 bar lift

I designed this yesterday. I think it would be great to use a reverse double 4 bar for the Next Level Challenge. This one works, but it is very unstable. I’ll go back to the drawing board today. Hopefully I’ll have a functional prototype before the end of the weekend. […]

Obstacle avoiding robot

I recently started going back to projects I did a few years ago. The obstacle avoiding robot was my very first Arduino project, but looking at it on the shelf in my robot workshop, I felt that it had to be more pleasing to the eye. It really was a […]