Post Created date
Long time - no c - Programmer Dongle Project
I would tin all those exposed tracks too. Unprotected, they're going to rot in just a couple years. And what everybody else said, again: very clean layout that's a pleasure to...
Monday, 16 November 2009 - 19:44
ATMEGA32 Hardware Problem
We still haven't seen the input circuit. If the input is not pulled up, it will behave erratically and different results can be produced simply because of different configuration...
Saturday, 14 November 2009 - 17:13
Interfacing AVR to MOS logic
Quote:Sometimes you just can't see or fix where the problem is, like if you have more than two PCB layers, and the short is in the middle layers or vias. In those cases, you can...
Friday, 13 November 2009 - 13:36
ATMEGA32 Hardware Problem
What Cliff said and I would like to see how the inputs are implemented.
Friday, 13 November 2009 - 13:32
The PC register and the "goto" statement
Please read about Coroutines in C: http://www.chiark.greenend.org.u... It's pretty intersting and it might be just what you're longing for.
Friday, 13 November 2009 - 02:29
Interfacing AVR to MOS logic
I solved the problem with optics. It was a tiny bridge between two PCB traces. I checked each pin to ground individually, but never checked resistance between the pins. Heh heh....
Thursday, 12 November 2009 - 20:39
Interfacing AVR to MOS logic
Hi Giorgos! A joystick is a very dumb and simple device: it just closes switches, it can't monitor when something is being scanned or not. Yes, it interferes with keyboard...
Thursday, 12 November 2009 - 16:57
Interfacing AVR to MOS logic
Yes, I'm powering off the joystick port. Docs say 50mA tops, but it seems to be directly connected to the main +5V bus inside of the C64 without any tricks. I wouldn't exceed 50mA...
Thursday, 12 November 2009 - 14:05
ATMEGA32 Hardware Problem
Before anyone can help you, he would like to know the following about your situation: 1. What hardware and software you use to program your ATmega32, did you verify flash data...
Thursday, 12 November 2009 - 13:58
Interfacing AVR to MOS logic
Yeps, they look pretty normal to me, not particularly flat or anything. But I probably should collect a profile on each line, how it behaves with and without the device and with...
Thursday, 12 November 2009 - 13:32
zero cross Optocoupler
Ok, but not nearly as much as a resistor.
Wednesday, 30 September 2009 - 08:56
zero cross Optocoupler
It says 250V and you have 110V mains so it should be all right? Dunno, I never used SMD ceramics with high voltages. When I played with this I used some regular film capacitor.
Tuesday, 29 September 2009 - 23:13

Pages