A site of endless curiosity

Posts Tagged ‘kit

Blast from the Past – Heathkit catalogs and Learn-as-you-build Radio Education Course

with 2 comments

Heathkit – Learn electronics as you build – Basic Radio Course (1960)

Heathkit – 1978 Catalog

Heathkit – 1951 Catalog

Written by frrl

November 27, 2009 at 1:20 am

Get to know your Stepper Motor and the SAA1042 Stepper Motor driver chip

leave a comment »

A while back we wrote an article on the AES IsoLoopsmall loop transmitting antenna.  You might want to build your own.  To make precision movements on the tuning capacitor you could use a Stepper Motor. (Limited Space Antennas – The Small Transmitting Loop Antenna: How to build your own.  Or, using OPL – the AEA Isoloop

If you don’t know what a Stepper Motor is and what it can do for you, then heck, what a great time to find out.

Check out our Mashups page for background on Stepper Motors, the schematic from the AEA IsoLoop controller, datasheets for the two major IC’s, and if, you want to build one from a kit, we have the Ramsey SMD1 Stepper Motor driver kit ($35).

First, what the heck is a Stepper Motor – read about it.

Schematic from the AEA IsoLoop LC-1 Controller
This schematic has few parts and the most exotic parts are only a SA1042 stepper motor driver chip and the a 555 timer.
Datasheet for the SAA 1042 Stepper Motor Driver
Datasheet for the 555 timer

Or, Build from a kit – The Ramsey SMD1 Stepper Motor Driver Kit

Written by frrl

April 3, 2009 at 4:22 am

Posted in Uncategorized

Tagged with , ,

%d bloggers like this: