Blog Entry

Dotmatrix printhead driver

First working PCB of a dot matrix printhead driver. The circuit is a simple transistor array with a 74HC595 shift register, which simultaneously triggers the printhead’s tiny hammers. The PCB is designed to be daisy-chained with other identical copies, allowing one to control multiple printheads at once.

Dotmatrix printhead driver

Posted on:
2009.09.01 -0500

Tags:
music , Tepozchiquilichtli