I have ordered the stepper motors, drivers and power supplies.X and Y axis motors:http://www.omc-stepperonline.com/dual-shaft-nema-23-cnc-stepper-motor-114mm-25nm-23hs453008d-p-163.htmlZ axis motor:http://www.omc-stepperonline.com/3d-printer-motor-nema-17-168a-45ncm64ozin-17hs191684s-p-17.htmlX,...
My goal is to make a computer you can extend with some peripherals devices. Of course, the modern ones, no vintage cassette tape or light pen. But there is a problem: a lot of them has a SPI or I2C interface.Of course you can simulate SPI and / or I2C...
I'm going to document a few places where I'm consciously cutting corners on the design. Here's the first issue - my one-shot circuit for resetting the address counter on the rising edge of Vsync is a poor design. I think it will work, but it's not done...
It's off. It's gone. It's in the mail. Somewhere between Pennsylvania and California is the travelling box of hacker crap.A few changes: I needed to use the Large flat rate box. The Harbor Freight box was unexpectedly out of spec and didn't fit in the...
The Nixie Driver IC I am going to use is a K155ID1, which is a Russian clone of the SN74141.Using good ol' Google, I found plenty of old Datasheets that helped me figure the (hopefully!) definitive pin-outs needed to correctly connect the IC. Together...
I just flipped the switch on VGATonic from "In Progress" to "Completed" - I realized I hit every bullet point I wanted to hit when I first started this project (in 2014!) and I've added some awesome features along the way.This, of course, doesn't mean...
I finally got around to populating an updated version of the SY88022AL test board. The datasheet claims typical 25 ps (20-80%) edges driving 30 mA into a 25-Ohm load. I haven't seen that yet, but it's definitely closer than last time. In this updated...
Before I get started, I wanted to give a shout out to Misha at dizzy.ai, most of the progress in this post is due to finally narrowing down to a torque controller that fit this application's needs. Specifically, I used four of his absolutely fantastic DirectServo...
OverviewSo we looked at the basic ways with hooks and RAWINPUT.Windows has filter drivers, these basically sit on top of the existing drivers and can modify what the base driver does, simply a filter.MSDN Filter DriversSoftware NeededWe will be looking...
Not a moment has gone by that I've been considering various solutions to the 14V rail problem. The previous plan was going to involved a simple charge pump to provide the input voltage to the 14V LDO. The current LDO being used has a max input voltage...
Prototyping To validate independent aspects of the design concurrently, we will work on two separate prototypes in parallel. The “works like” model (or in this case, “sounds like”) will focus on the functional aspects of the...
As a part of my thesis on the biohand, I ran some relevant tests (mostly still with no control board, which came in a few days later). Some of these tests are presented briefly here. For more detail, check my thesis! :DPrehensions (Weir et al., 2003)...
After having a hard time getting the ILI9341 touchscreen working with the NanoPi Neo (Allwinner H3) it seems to work now. To have more GPIOs available for other stuff the touch and display share one SPI bus. There is basically nothing available...
First, it looks like this connector there is a parallel port. It is connected to a PACSZ1284 chip so there might be something to do with this later!And a few information about the hardware from the OS:lspciroot@rsfo-ntp01:~# lspci 00:00.0 Host...