LCD Controllers using an HD44780 Display Controller are commonly used for small batch electronic devices, and are popular with electronics fans worldwide. One problem with those controllers is their demand for IO-lines, due too the parallel interface they require at least 7 IO lines.
Archive for the ‘Electronics’ Category
lcdshift
Tuesday, March 31st, 2009Blinking Eva
Saturday, December 6th, 2008Since it’s suddenly, out of nowhere, christmas time again, and since christmas is traditionally the time to build blinking somethings, i decided to publish this. Long ago – well, actually last year – this as a christmas present for my girlfriend Eva.
What does it do? Nothing useful. You plug it in, and the various LEDs blink wildly, one letter at a time, two letters at a time, all on, all off.
usbmot
Monday, November 3rd, 2008
This device connects to a computer’s usb port and controls two small electric motors using the L293D. The atmega microcontroller uses the firmware-only USB driver from objective development.
Device description
The usbmot device controls up to two small motors, 600 mA current each, 1.2 A peak each, with an atmel atmega microcontroller connected to some host device via USB. The speed of the motors can be controlled with PWM.
