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PCINT interrupt on level change with slow rising signal
1mS rise time from an opamp comparator sounds very slow to me - are you sure that the analogue domain schematic/hardware implementation is correct?
Monday, 3 October 2011 - 12:06
Attiny45 frozen after RSTDISBL fuse bit programming
david.prentice wrote:I just feel that the default should be an empty box when you initially choose 'program flash'.Agree completely and whole-heartedly - I was just trying a new (...
Saturday, 3 September 2011 - 22:02
Attiny45 frozen after RSTDISBL fuse bit programming
Looks like you might have programmed the RSTDISBL but unprogrammed all the other fuses. I suspect CKSELx all being set to 0 has effectively stopped your processor from running (e...
Saturday, 3 September 2011 - 19:23
Logic Analyzer / DSO Project?
I believe it only transmits changes of data - I've never run out of sample depth. 1M, 10M, 100M or 1000M pre trigger samples can be seen. I think the next version of the software...
Sunday, 21 August 2011 - 00:38
Logic Analyzer / DSO Project?
These cost less than a small fortune and are very good - I have the Logic16, and the PC side software is very very good (you can download and try it without having the hardware...
Saturday, 20 August 2011 - 22:54
3 values on 3 separate 3 digit 7 segment displays
Yes, I have bought cheap MAX7219s also from the 'bay - they turned out to be counterfeit and did not work to spec. They went in the bin....
Friday, 19 August 2011 - 21:12
3 values on 3 separate 3 digit 7 segment displays
kecked wrote:I thought all I had to do was define a value on a port PA1,PA2 etcc... and it would be displayed on the max7219 based display. Nothing is as easy as it looks.......
Friday, 19 August 2011 - 12:55
3 values on 3 separate 3 digit 7 segment displays
kecked wrote:I think I will cascade two max chips and feed it a string that has all three values to display. This limits the chips needed to 12 I think you mean... I think I will...
Thursday, 18 August 2011 - 08:04
STK500 is always on when RS232 or RS232 SPARE is connected??
With a common ground between the RS232 and the STK500 supply negative, my STK500 does exactly the same...not surprising given the switch wiring is as indicated by others
Tuesday, 19 July 2011 - 11:41
DS1307 read
...the difference between your code and mine being that you don't do the //Send START...again. to terminate the write TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<...
Thursday, 14 July 2011 - 20:31
DS1307 read
Here's some code that I've used in the past to read a DS1307 - it's very straightforward, to the point of being very inefficient (there could be an internal loop to read through...
Thursday, 14 July 2011 - 20:14
Bosch dryer using Atmega48P chip question
What makes you think the AVR is the broken part?
Friday, 1 July 2011 - 13:33

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