Ran the CNC for the first time in the new shop and found that the keyboard was positioned perfectly to fill up with aluminum chips. I did a quick Google for VESA mounted keyboard trays was amazed at how much they cost. SDS has what looks to be a great product, but having bled money into the shop for the past few months, I needed to do this on the cheap. Of course VESA wall mounts are inexpensive, especially for smaller monitors. So I set about to make a mount that would go between the monitor and the monitor mount plate. Some preliminary drilling for the VESA bolt pattern. Looks OK. This is a little thick for my small Diacro bending brake, but it was no problem at all. Clamping the keyboard tray to the bent arm and match drilling holes. This keyboard tray was nothing more than a piece of already bent scrap waiting for this moment. I quickly realized that the main arm needed some stiffening as the leverage on the mount was too high. Some hardware store aluminum angle (my only expenditure, everything else was scrap and hardware on hand) made a world of difference. Kent made me this keyboard tray in a few minutes, of course he has a proper press brake and big shear. It’s still a little bendy, But at this point that’s more the fault of the monitor arm. The small ones aren’t rated for too much weight so I need to remember not to hang on it anyway. Ready to make chips!
Thursday, April 30, 2015
Really easy to put together, just solder it up according to directions, took maybe 15 minutes total to put together in the project box. The box doesn’t come with the kit. This is what my voice sounds like modulated with a carrier wave at various frequencies between 100Hz and 400Hz.
Coincidentally my friend Kent had the soldered in battery on his CNC mill motherboard (a 486 processor DOS based Centroid PC control…) fail this week, wiping his incredibly specific BIOS. I gave him one of the holders and he was back in business as well, although we did have to find out a bunch of detail about the hard drive, including the Landing Zone specification in order for the motherboard to see the drive.The power cord was missing, I didn’t have an exact match so I made do with some large spade crimps that fit.I had this USB MIDI cable on hand and tried to use it to upload some factory patches (Sysex files!) using both MidiOx and Bome’s SendSx. But it just wouldn’t work. I could play individual notes from the PC and I could retrieve data from the keyboard but it just wouldn’t work for sending data. Much Googling found some various forum threads that said that you need a better quality interface. In what was my second ever Craigslist purchase, I found a nice guy selling an M-Audio MIDISport 2x2USB interface for about half of new price. A quick trip to town and I was in business. I forget which of the two programs I ended up using to upload the file, but it succeeded and I now have all the factory patches installed. Now if only I had some musical ability…
This is the Parabox. It is a single element that’s repeated in the revolving blocks illusion below.
You can see the nature of this type of illusion. Jerry’s calendar. This is what he used to keep track of appointments. It has seen better days. This video shows it, poorly.
The block illusion was fairly complete. One of the “blocks” underside. The illusion. They stick on the hub with magnets. The magnets are weak. The power cord had to go. As did the train transformer. Being a crazy hoarder I have a box of train transformers. The angle adjustment for the motor was nifty. “From 1 Rev 2 Sec to 1 Rev Ten Sec.” I added a switch that could be actuated remotely (if they end up putting it in a case.)
This is what it looks like in action. I also made that ring.
For the starburst I needed to get a motor working. The junkbox produced a suitable one. Some of the petals had broken loose from multiple repairs of epoxy and spot welding. I decided to use screws to hold the petals on. I made a hub that connects it to the motor. And bent up a little motor mount from sheet metal.
And here’s a short video of it in action.
Below are a bunch of pics of the calendar guts. I didn’t have enough time to get it fully working before the exhibit, there were many missing pieces, cut wires, etc. A pity, but I did get it cleaned up and it keeps time and date now. I completely forgot to take a picture of it all cleaned up. You’ll have to go to the exhibit, if they end up displaying it.