Talk about cheap stepping motors and there’s a good chance someone will mention the “28BYJ-48”. Or maybe he or she will not remember the part number and say something along the lines of “That 3 dollar stepper used in air conditioners! You know! B28 something!” Truth be told, it doesn’t get much cheaper than 3 dollars. The 28BYJ-48 is the queen of ultra-low-cost steppers.
Some years ago I started a Quest to get a machine to juggle. Some weeks ago, I yet again found myself working on a machine with the goal of getting a ball to bounce on a plate without falling down. And bouncing it does. But is the quest now finally finished? Is the holy grail of continuous ball-bouncing reached? The short answer is “No.” and I will probably not spend any more time on the current iteration of this DYI robotics nightmare.
This is a PID controlled ball on a plate machine with the sole goal of keeping the ping pong ball bouncing for as long as possible. I am trying to build ball bouncing machines for a while now. This is the newest iteration!
This entry is about a small stepper robot arm I made a while ago. In this post, I will first talk a bit about how I built it and what my thoughts were while doing so. After that, I will show some moving footage of what the thing is able to do. Continue reading Small Stepper Robot Arm
So here we are. Ready to setup the WiFi and static IP settings on the Raspberry Pi running Raspbian Stretch Lite. And because it’s Lite, all we can use is the command line. But what do we exactly do to get the job done? Here are some steps you might want to consider when wrapping your head around the WiFi and static IP setup process:
After seeing a really neat commercial Pen Plotter on Youtube, I decided the time has come to build my own Arduino Pen Plotter using Nema17 Stepper Motors and readily available 3D Printer spare parts.
In the previous post, I wrote about how I decided to build an Arduino Delta Robot. In this post, I will show you how I added some simple Computer Vision to the project.
This is a post about an old project I finished years ago. Maybe something good will come from looking back on what kind of decisions I made while working this monstrosity of an Arduino Delta Robot.
This entry is about a small Raspberry Pi robot arm I made more then a year ago. I used Dynamixel AX-12A servos. They are quite expensive. But the rule “I payed more so it ought to be better” applies; What you get are very easily configurable strong smart servos. The “smart” just meaning that you can control them via serial bus.
This entry is about the quest to get a machine to juggle a ping pong ball.
I started thinking about a ping pong ball juggler 2 years ago. And it was around that time that I built the first one of them. it uses LED – Photo transistor pairs to “see” when and approximately where the ball comes down. I used 4 micro servos to move a wooden plate. It’s the machine in the first YouTube video.