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use spi inplace of that twi stuff
I have an example project that uses that twi code. I think its part of the Arduino wrapper. Its looks like this. twi_init(); uartInit();// initialize UART (serial port)...
Sunday, 22 May 2011 - 19:55
help with math.
Ok I can't figure this out. I basically want to take two bytes and reduce it to one byte. So that ffff is ff and 0 is 0. I tried this unsigned char time = ( ( v1 | (v2<<8...
Saturday, 21 May 2011 - 20:39
mega8 reset.
I'm wondering if one could reset the mcu with the Watchdog. Is there a register I could effectively zero and force the mcu to reset? I had to use my PC6 pin so I no longer have a...
Thursday, 28 April 2011 - 03:35
needs what I would call an axial reed relay
I have a component on a board. It has a clear diode like jacket with a switch in side. This component is closed via a magnet. I need to replace one as it seem to no longer close...
Thursday, 7 April 2011 - 22:48
testing for high condition trick, stupid?
NOTE: for reference I'm working with a mega8 ( 328) This seems to work very well for me, but I have great concern that its not going to work in all cases. I know the best way to...
Tuesday, 22 March 2011 - 04:11
removing jitter from 1m ohm pots.
I here a few had some success just cleaning with alcohol. Here is a guide most people follow. http://www.atariguide.com/help/c... For me I find this never helps. IMO, its easier...
Tuesday, 8 March 2011 - 22:50
help reading a disc capasitor
I seem to be getting confused by the info on the net here. I have a disc cap that has: B 101 --- 101, is a underlined and the color is orange. I read this as 10pf but I certainly...
Saturday, 26 February 2011 - 19:13
atmega pins, do they have a small capacitance?
I was playing around with an idea to read a 0-500 ohm variable resistor. Normally one would use a 555 timer and charge a cap up. Recording the time it takes to do so gives you the...
Wednesday, 9 February 2011 - 17:32
mega8 pc6 usable with reset?
Would I be correct in saying the pc6 pin is out of order when reset is enabled? Thus, the only way to use it as input would be to disable reset? Furthermore, if I do disable reset...
Friday, 4 February 2011 - 02:41
messed up my ADC from mega 168 to 328? [solved]
I was using the ACD in my 186 for a project like so: #define ADC_VREF_TYPE 0x40 static int read_adc(unsigned char adc_input) { ADMUX=adc_input|ADC_VREF_TYPE; _delay_us(150...
Wednesday, 2 February 2011 - 21:47
burned a chip with RSTDISBL=0, how to revive?
I guess using the rest disabled fuse sort of locks you out. Is there a way to fix the fuses without a high voltage programming or pumping a square wave in this case?
Wednesday, 1 September 2010 - 00:42
fuses for atmega328p, use bootloader
I cant quite figure out what's going on here. I use a bootloader with my atmega 168 with fuses FC extended DD High DF Low When I try to match up the fuses for my 328p, the...
Monday, 30 August 2010 - 22:23