Here is my drawing for a box to enclose a RAMPS1.4 stepper motor control board. If you don’t have any RAMPS1.4 boards… I guess you won’t be interested. You can cut these at Quelab from 3mm acrylic. Cut one copy as is, another copy without the little access holes for the [...]
After making it part way through the dreaded calibration procedure for a delta 3D printer, it does not seem that bad. I tried to write a quick overview that may be helpful to some.
I am not done yet, but I am within +-1mm of flat. I hope that the autocalibration [...]
I have gotten busy, and not heard much from ACE. I don’t have tickets yet (guess I’ll get them at the door). I don’t know if I could bring the Dalek if I wanted to, without permission as an Exhibitor.
It has a blown transistor, which I have not fixed yet. I could just replace [...]
There are some tricky aspects to working in wood. Since it is not totally flat, cut the stock just large enough for your piece, then stabilize with magnets. It can move with the engraving motion/vibration. Masking tape would have helped with burn marks/smears, but they can be removed to the desired degree with [...]
I have drawings for a 3D printer filament spool holder, in 5mm stock. 5mm plywood is common for furniture backing and drawers. This was tested on the Quelab laser cutter. See my blog for details.
The axle can be made from a short piece of electrical conduit.
I had a very hard time figuring out how to use Pin-Change Interrupts. I found AVR documentation hard to follow, and Arduino libraries overly complicated and obfuscating. Here is an example of how to use pin-change interrupts for Arduino (mega). It may help.
Quelab is offering an introductory course on making things with the Arduino microprocessor development platform in April. Classes will be held Wednesday evening, 6-9:PM, April 11, 18, and 25. Cost is $65 ($40 for members), and includes an Arduino Uno development board, prototyping board, and support electronics like LED’s, switches, transistors, and wires. Class participants [...]
Peek is a project to streamline Android to run on lower cost devices, and run more smoothly.
I am an Android user and supporter, but am often embarrassed by the sluggishness of the OS as delivered by my phone carrier. I hope that some of the Peek work will bring user responsiveness [...]
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