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Please contribute PCB layout pointers
Anyway, back on to topic: I figured out how to use the labels in Eagle and have updated my schematic. I added the pull up resistor to the reset line, did I do it correctly? I...
Thursday, 8 May 2008 - 20:09
Please contribute PCB layout pointers
I doubt that my PCB making method can cope with these tolerances, but I've got to start somewhere so I'm fine with failure.... I'll at least learn something from it. I see what...
Thursday, 8 May 2008 - 17:27
Please contribute PCB layout pointers
Here's another attempt at it using the advise from earlier in this thread. I routed everything manually. Comments? I haven't figured out how to label the bus yet. I'll post...
Thursday, 8 May 2008 - 06:22
Please contribute PCB layout pointers
Ok, a lot of good comments here, thanks! I will try moving the ISP and LCD connectors for a different layout. The current draw of the system should remain under the 100ma that the...
Thursday, 8 May 2008 - 02:15
Fine tuning a crystal on TOSC
Yeah, I'm not going to mess around with 50/60Hz. I had thought about the "coarse" one second adjustments but I'd rather this be a little more refined as seconds are displayed and...
Tuesday, 6 May 2008 - 15:59
Fine tuning a crystal on TOSC
I don't see how the switch to CTC is only minor. Timer2 is an 8 bit timer and I need it to overflow in order to track 1 second passing. This is fine if you want to make the clock...
Sunday, 4 May 2008 - 22:34
Fine tuning a crystal on TOSC
glitch wrote:It should work as long as you are servicing the interrupt within 128 cpu cycles. You will also need to pay attention to the ASSR register when doing this. You will...
Sunday, 4 May 2008 - 20:39
Multiple arguement in a 1 dimensional array
Ah ha! That's a prototype....but not organized with the rest of the prototypes. No wonder I couldn't figure out what the heck it was doing. Here's the accompanying function....
Monday, 21 April 2008 - 14:47
LED Marquee Concepts
jayjay1974 wrote:Only one row is lit at any time. Interesting. If you drive the LEDs at 15ma and have a sign with 64 columns then there is a possibility of needing 0.96A of...
Friday, 18 April 2008 - 20:57
Dragon customization for ATmega48
NightSky wrote:You can build a motherboard (in a sense) that plugs into the Dragon. Then you can build daughter boards that plug into that. Each daughter board would have a...
Friday, 18 April 2008 - 16:30
XBMC "big clock" on AVR
I used Peter Fleury's LCD library (available at http://www.jump.to/fleury) and adapted Xtinus' font information from the XBMC svn. Is this code enough or should I clean it up and...
Thursday, 17 April 2008 - 02:41
Atmega8 and LCD to show time
bobgardner wrote:Another plan is get an external xtal, let it run for a while to get the correction factor... need to add 1 sec every 10,000 sec or something and add that in......
Thursday, 17 April 2008 - 02:23

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