A very daring exercise to be sure. Oscillation proved unavoidable but bearable. Noted the leash vibrating & wondered if aliases of the vibration could be oscillating the steering, but it's accepted that stiction of the pot is the reason....
As this is a very first attempt at 3D printing, the results are quite nice. We used a Da Vinci Junior 1.0A that uses PLA for its prints. The first time, the two halves of the box fitted nicely, as did all the 'innards' of the box. Some minor modifications...
Well, damn. Now I notice that a video is mandatory. And it has to be on Youku (is that a Chinese site?) or on You(are being watched by Google-land Security)Tube. I can make a video, sure. But I'm not making a Google account. And it's a bit late to ask...
CAD work and fabricator begins today. It is our hope to start piecing together the first parts this afternoon. It is going to be a long push up hill from here, but we do not have a scope change, yet. As soon as we have the first parts done we will start...
We have some bytes from the tablet. It's all pretty standard stuff with one exception.// unenc init a4 w f0 55 a4 w fb 00 Read ID Bytes a4 w fa a5 r ff 00 a4 20 00 13 // Enter enc mode a4 w f0 aa // write 16 byte key a4 w 40 e0 7d e0 7d e0 7d a4 w 46...
Update 12.06.18 - pics of the new board Not much cleaning done so far. They'll get their proper isopropanol cleaning when fully populated! top side with 18650 cell (LG-2) bottom side ---------- more ---------- Just soldered one of the new boards and...
Now that we can read SD cards and have an I/O interface in place from the Z80 to do I/O mapped access to the SD card it's time to hook the two pieces together. To do this we will need to look closer at how Grant's code request blocks. The loader...
More structured details to come. Some quick notes:Copy the original Arduino .ino file to Platform.io IDE on Atom may cause build issues. Create a new .ino file using PIO IDE and then copy/paste source code from Arduino .ino file to new .ino file. The...
Found out about the Tinymovr motor controller. Basically what I'm trying to do! Very cool, and my version 2 will use it as reference. I hope to make mine even smaller (27x27mm vs 40x36mm) and cheaper ($40 vs €89). I only need up to 13V (3S lipo),...
It was dumb to use a DC motor for this project. I should have just ponied up the resources for a high speed stepper. My plan was to attach a rotary encoder to the DC motor to accurately measure the number of rotations. This is not easy....First, I tried...
For some reason the 47 pF value for the caps is sitting in my mind. Either after 'calibration' the LC meter is so far off that it read both my TI-89's and my V200's caps 51 pf, both ~8% high, or both of them are within their 10% tolerance and reading...
The Luggable PC project had its first public outing yesterday: I brought Easel Frame V3 to Hackaday LA January Meetup. It was pretty much as documented earlier except it had the Mini-ITX board installed instead of the full ATX motherboard. (Their GPU...
Tonight I gathered some reference/research material for this project. Fortunately, several others have done some really great work with this module, so here's credit to them: LTC3780 DatasheetBeyond Logic blog postTemplaro blog postGreat Scott videoJulien...
Here's the evolution of Kubelik based on my investigations into why Kubelik lost out in dynamics in comparison with Deca DAC.The filter now uses two inductors per channel, beyond the filter there's now passive I/V with a unity gain buffer following....