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Discussion Title Created date
File tab naming bug
Here's a good one: - open a convenient file in AS5 editor - 'save as' something else - observe that the file name on the editor tag has not changed - make changes to the visible...
Tuesday, 2 August 2011 - 06:16
Targetting multiple processors
Not sure if this is possible: I have a large application - almost fills 32k of ATMega324 but has a number of versions: two different processors, three different displays and...
Friday, 29 July 2011 - 08:43
printf, floats, and AVR5
All right, I'm sure there must be a way to do it, but I'm blowed if I can find it... Surely there must be a better way of getting floating point printf than including the line...
Tuesday, 26 July 2011 - 16:58
Aaargh. Optimisation breaks my code.
And optimisation is required to make _delay_ms work properly... Applies to AVR4 and AVR5; was fine with AVR3. Head bender time. For reasons I don't know and can't easily track,...
Monday, 27 June 2011 - 15:02
It works at 5v but not 3.3v...
Continued from the thread on running an LCD chipset at too high a voltage... with apologies for the length. Here's the precis: I have a small number of variants of my ECU...
Tuesday, 12 April 2011 - 20:49
KS0713 LCD driver chip
Has anyone used one of these at higher than the rated 3.3v? Reason I ask is that I have an interface circuit talking to something that doesn't quite meet the published specs;...
Thursday, 7 April 2011 - 11:26
Aaargh - RS discontinued my display...
I urgently need 40 of Displaytech 64128E-GC-BC-5LP (or the other colours) which appears to have been discontinued. I'll be on the phone in the morning but if anyone can point me...
Tuesday, 23 November 2010 - 21:21
[TUT] Generating video on M32 for PAL
Prologue Generating video on an AVR is simple in concept, but tricky in the details. You will need to understand the basic terminology and timings of the video system you are...
Thursday, 15 July 2010 - 15:25
[TUT][CODE] The Intersema 5534 barometer as an altimeter
This is a very brief tutorial... here's some working code that I used in an altimeter, to grab pressure and temperature from the Sema barometer chip and convert it to altitude (...
Friday, 26 March 2010 - 10:53
Mega324P eeprom forgettery
Is the M324's eeprom known to have the same issues as M32? As in, forgetting the value in eeprom address zero at random intervals, particularly at low voltages? I have the...
Sunday, 29 March 2009 - 19:15
Here's a headscratcher: M32 to M324
Okay, it's a working and reliable design with a Mega32 driving a serial port to ISO9141 converter, a software second serial port driving a USB FTDI chip, 8MHz external crystal,...
Tuesday, 10 March 2009 - 21:44
Check my logic? Anemometer rpm.
I have a little one-pulse-per rev anemometer (wind speed meter). I'm trying to guesstimate the pulses per mph, and my answer is looking far too easy... Approx dimension from the...
Tuesday, 24 February 2009 - 18:40

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