Sin_Mod_XY.jpg

An XY mode scope-grab of sine and ring modulator signals. How often do you get to use XY, anyhow?

JPEG Image - 94.35 kB - 06/23/2020 at 14:58

Preview

Sin_Cos_Mod.jpg

Sine, cosine and ring modulator traces. Looks like I didn't manage to hold the camera perfectly still. Might also be time to clean the scope's screen, too.

JPEG Image - 97.70 kB - 06/23/2020 at 14:58

Preview

SineDriver.tar.gz

Complete KiCAD project file set. Includes an optional parallel port interface that, when paired with a raw printer device in CUPS, you'll have user-land access to the motors. Updated: 22 Jun 2020

application/gzip - 13.26 kB - 02/17/2020 at 18:42

Download

Motor_Printer_2.rb

This is a simple app to convert some G-Code (G0, G1) to a stream of control characters for the breadboard controller. The "SETUP" section contains the variables to edit for specifics of your system. Updated: 22 Jun. 2020

application/x-ruby - 14.22 kB - 03/12/2020 at 18:07

Download

Breadboard.jpg

It might not be pretty, but the motors are controllable from the command line.

JPEG Image - 131.03 kB - 02/17/2020 at 20:13

Preview

Channel_Driver.png

A dual 12V power supply, a quad op-amp, and four transistors make a motor spin. As shown, the circuit will put 5V RMS at 15 Hz on your stepper motor.

image/png - 74.66 kB - 02/10/2020 at 23:41

Preview

Board_Layout.jpg

Even with a ring modulator, it is still no prettier. Now it has the building blocks color coded.

JPEG Image - 454.55 kB - 06/22/2020 at 18:42

Preview