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I2C or TWI to TMP100
I'm trying to bit bang a TMP100 digital thermometer with a atmega8515 at 4Mhz. This code seems to run fine for about 30 secs, then the chip fails to acknowledge after I send it a...
Sunday, 10 August 2008 - 06:18
eeprom + code optimization problem
So I was having trouble with my code, which involved avr/eeprom.h and a timer compare interupt. So i decided to throw a catch-all bad interupt vector in my code to check to see...
Thursday, 26 June 2008 - 08:08
UART + EEPROM problem on Mega8
So I have almost given up on this one. Here's the code: //isruart.c #define F_CPU 3686400 #include #include //#include #include #include #define USART_BAUDRATE...
Thursday, 26 June 2008 - 02:11
USART PROBLEM
Ok so I'm running a atmega8 at 3.686Mhz on the STK500, so I know the clock source is good. I copied and pasted the code from the atmega8 datasheet, and created a simple test to...
Tuesday, 24 June 2008 - 06:16
UART oddity absolutely baffling
I'm messing around with Uart trying to build a simple library for the at90s2313, and I have run into something that confuses the hell out of me. why wont this work: #include...
Monday, 23 June 2008 - 06:08
Computerized DVD Storage Rack with Finite State Machine
So this is my attempt at a DVD storage rack. As impractical as it is, I wanted to give it a try. So with a servo, stepper motor, and Graphical LCD I had laying around I made it...
Sunday, 22 June 2008 - 22:22
Problem with PROGMEM
Ok so I'm designing a finite state machine in order to display a menu system on an lcd. I'm using a ATmega8515 at internal 8Mhz. There are many data structures that need to be...
Tuesday, 20 May 2008 - 05:44
Altimeter with Atmega16
I am trying to design a Altimeter. I have experience with AVRs and C, but not much with ADC/analog signal conditioning. I am using the MPX4115 http://www.freescale.com/files/...
Sunday, 8 July 2007 - 01:28
Problems With my servo code
I recently wrote a program to control two servos with the AVRbutterfly. It works but I have a superfluous question: In my working code the cpu is prescaled by 8 reducing the...
Friday, 25 August 2006 - 00:33
Changing AVR Butterfly's Clock Frequency
I know the butterfly's bootloader automatically sets the clock to 2 Mhz. And the newer more stable version prohibits changing it. Do I need to use a different bootloader? Possibly...
Thursday, 13 July 2006 - 17:01
Using Butterfly to Control Servo
I have a butterfly and have been trying (for a long time) to control a servo with it. I have read many post here but still am stumped. Even tried code people have posted. Does...
Thursday, 6 July 2006 - 23:46
Error during compilation
I can't seem to figure out what the problem is. I am using a Atmel Butterfly with a Atmega 169. I think I need to define OCR1A but isn't that included in ? Thanks #include...
Tuesday, 4 July 2006 - 22:05

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