1MHz+ Quadrature Divider for attiny13

The Emergent Properties of Meat

Blog
Software
Hardware
About me
Photography
Logos

Bigger projects: emc2 & AXIS

Friends' pages:
Alex
Bill
Chris
Jon
Michael

« 400kHz Triple quadrature divider for atmega8 and quadrature state table generator | Newest entries in projects | Recipe: Farmers' Market »


Quadrature divider board. Actual size: .7x.4 inches (about 18x10mm)

This untested code, along with an Eagle schematic and board layout, are for a quadrature divider that polls at over 1MHz. The R and S test points are used to program the device.

Like the 400kHz triple divider, this program uses a state table generated by "mkstate.py", and is GPL software.

For real-world use, external pull-ups should probably be added to the board's input side, according to the directions of the encoder manufacturer.

Files currently attached to this page:

quad-tiny13.S	4.6kB
quadrature_divider.brd	6.8kB
quadrature_divider.sch	48.5kB
quadrature_divider_brd-small.png	24.9kB
quadrature_divider_brd.png	7.7kB
quadrature_divider_sch-small.png	16.6kB
quadrature_divider_sch.png	4.1kB

[æ]