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I need to determine a pin change
I have an autoguider that is used for correcting my telescope errors while taking a photograph. It has four active low pins that signal when a correction is required. Now I have...
Thursday, 26 July 2007 - 20:52
Pin Change Interrupt Mask
I am trying to set up a pin change routine on my Tiny2313. I want to have a pin mask that I can use to determine which pin changed and proceed from there. What I have is an...
Friday, 20 July 2007 - 17:26
Recent Forum Activity
Awhile ago before AVRFreaks was updated there was a window that showed that latest (approx. 10 or so) posts to the site. This made it easy for me to keep up on topics. I have...
Wednesday, 11 July 2007 - 17:26
Motor Control Problem
I am using a Gecko Motor Controller to drive my telescope with a Pittman 9000 series DC motor. I use Timer1 to produce a pulse stream for the RA axis (East-West motion) and...
Thursday, 28 June 2007 - 20:18
Shift Right with 16 bit numbers
I have setup Timer1 and it is outputting a steady stream of pulses. Now I want to change the speed of the pulses in steps of 2X, 4X, 8X, 16X etc. I am working in Assembler I...
Tuesday, 26 June 2007 - 06:20
EEPROM Simulation with AVR Studio
I am sure this has been asked before but I could not find it when I searched. I am writing some values to the eeprom on my Tiny2313 which I want to read during program execution...
Thursday, 14 June 2007 - 16:53
Trying to Make PC_Comm
I am working my way through Smiley Book and am now trying to make the programme PC_Comm. I made the changes to the make file and saved it into the directory with the PC_Comm files...
Tuesday, 15 May 2007 - 06:34
Logic Inverter
I have two Al Williams PAK's that I am using in my latest project. One is a Pulse output generator and the other is Math CoProcessor. They can use the same IO lines if you...
Sunday, 25 March 2007 - 23:51
Butterfly communications
I have just connected my Butterfly to the Butterfly Carrier board. All seems well as it powered up fine and responds to the joystick. I am now trying to connect using the serial...
Saturday, 10 March 2007 - 19:31
Interfacing 3.3 Volt and 5 Volt Devices
I am looking to use a pulse output generator from Al Williams with my Butterfly. The problem is that the output generator operates at 5 volts and the Butterfly at 3.3 volts. I...
Thursday, 1 February 2007 - 18:10
Butterfly and External Crystal
I was following a thread on the 4 megabit memory that is included with the Butterfly and asked myself why am I not using this for my Telescope project. Then I remembered the...
Monday, 22 January 2007 - 19:11
JTAG Mk II and Tiny2313
I am having trouble programming my Tiny2313 with the JTAG Mk II. I have previously used serial programming without problems. However my new very fast desktop computer has NO...
Friday, 21 July 2006 - 01:06

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