Category Archives: AVR

Updates on projects with AVR microcontrollers. Anything AVR related.

LC7981/HD61830 Driver for EL Backlit Samsung LCD

By vsergeev | Published: March 30, 2007
I’ve found the time to post this LC7981/HD61830 driver (only graphics mode implemented) and some images of this Samsung LCD I’m using. I bought the LCD off of ebay ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=230070938443 ) and shortly after I wrote the driver for it from scratch. I finished this driver about a month and a half ago, but [...]
Posted in AVR | 18 Comments

USBasp Perf. Board Build

By vsergeev | Published: February 18, 2007
The computer I’m currently on (intel mac mini) doesn’t have a parallel port, so I can’t use the STK-200 style AVR-ISP to program/flash AVR chips. So, looking for the USB alternative, I stumbled across the USBasp. From the site, “USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega48 [...]
Posted in AVR | 4 Comments

AVR Servo Control

By vsergeev | Published: June 14, 2006
Well, my two days worth of figuring out AVR timers and PWM produced a very small and clean servo driver. Today my two 5g servos arrived and I hooked up one of them to the chip. I setup a test program and it worked out of the box. If you care to see it, just [...]
Also posted in Robot | Leave a comment

Manchester Encoding/Decoding

By vsergeev | Published: June 11, 2006
Like I said in the previous post, the RF receiver will pick up junk data when the transmitter isn’t transmitting anything. This means that you need some sort of encoding or decoding method of the data to differentiate from junk in the air and actual data. This can be easily done through Manchester Encoding, which [...]
Posted in AVR | 2 Comments