I recently bought 2 LCD from jckrers ebay store. I have a good idea for this stuff, but first I need to run several tests. This LCD are fine and use the common KS108 controller.
My first thought was to use the avrlib, so I wired the LCD and started to use avrlib, but I quickly [...]
admin March 24th, 2008
For my next project (another VFD clock ;), I need a small variable PSU. The main issue with the VFD display, is the power supply. In fact you need 2 differents PSU:
a 5v / 100mA for the filament
a variable 20 to 75v for anodes..
VFD tube like the IV18 need something like 20/30 volts in direct [...]
admin December 26th, 2006
Sometimes you need a simple negative power supply. The best example is the contrast PSU for common small LCD device. Building -5V from a battery or a wallmart supply isn’t really easy. I decided to build a small device that is able to provide -5V, -12V, -15V. I used the MAX 764/765/766 serie. Simply change [...]
admin June 10th, 2006