Post Created date
Atmega168A Problem connecting external crystal
External, low frequency xtal. Not suitable for 16mhz crystal. Did you change any other fuse settings at the same time, or did you read them successfully, change only that one and...
Tuesday, 5 March 2013 - 18:34
Interrupt on LUFA VS RX
Looking more myself, is sending a break condition a possibility? Seems the EVENT_USB_Device_ControlRequest signal could catch this, process it to specifically check for a break...
Tuesday, 5 March 2013 - 14:49
Atmega168A Problem connecting external crystal
The fuse settings you're using are wrong for the high frequency crystal you're using. The setting you are looking for for an external 16MHz oscillator is...
Tuesday, 5 March 2013 - 14:18
Real Time Clock
As John said, though, if you need accuracy, check out RTCs with built in TCXOs. They'll cost you $10 or so if you can't get them to send you a sample, but will easily save you...
Sunday, 3 March 2013 - 23:34
Real Time Clock
You should be able to make it work at 8MHz with some calibration. It'll take some time and some testing, but essentially just set an interrupt every x cycles and increment a...
Sunday, 3 March 2013 - 23:30
Real Time Clock
The 32k clock is convenient, but you could do the same with timer interrupts and the system clock. With some calibration, you could get a reasonably accurate clock. Either way,...
Sunday, 3 March 2013 - 20:27
Real Time Clock
Without a very accurate clock source or at least very accurate 32 kHz crystal and accurate handling of it, you'll lose time fairly quickly. Assuming you want this to be running...
Sunday, 3 March 2013 - 17:11
Issue with DebugWire on ATMega32U2
All I can attribute it to was interference on the SPI lines while I was programming the chip. The lines are multi-purpose and I missed a couple pullups to disable the other chips...
Saturday, 2 March 2013 - 23:13
Issue with DebugWire on ATMega32U2
Odd though it would decide to program itself... The last thing I did was tell AVR studio to start a debugging session at which point it used ISP to enable DW. It wouldn't have...
Friday, 1 March 2013 - 01:01
..
Always did like the guys that leave it to the last minute and expect someone else to do it for them =)
Friday, 6 March 2009 - 03:04
Shift register problems...
I think you've mixed up SERCLR and RCLK. SERCLR just resets the value of the shift registers to 0. RCLK is the latch, that transfers the shift registers into the storage registers...
Friday, 6 March 2009 - 03:03
USB to Serial breakout board schematics or EAGLE files?
You should probably be more specific about how you want to convert USB to serial. The easiest is probably FTDI232RL. The breakout board would be very trivial to design in Eagle or...
Tuesday, 17 February 2009 - 00:08

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