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Discussion Title Created date
Proper grounding for Mega8 with ADC ?
Hi - When using the Mega8 and the internal ADC, what is the proper way of grounding things ? Pin 7 and 8 are clearly the main power and gnd pins for the chip. Pin 20 is AVCC,...
Friday, 30 April 2004 - 02:52
Choosing between Input Capture, or Comparator input
Hey - I'm currently using the ICP pin to determine both frequency and duty-cycle for a periodic signal. Frequency determination works fine, regardless of the signal. Duty-cycle...
Tuesday, 13 April 2004 - 19:09
What's the RIGHT way to do an automotive interface ?
Hey - I was getting into a small argument with a colleague about interfacing to signals in an automotive environment ... and we came up with a few questions. I'm using the setup...
Thursday, 1 April 2004 - 13:38
OT: transparent pcb manufacturer ?
Very off-topic here. I remember a conversation a while back about a fab house that could do transparent pcbs. Or at least, as transparent as you can get ... I've been to a bunch...
Monday, 29 March 2004 - 21:48
Menu systems for LCD displays
Hi All - How do you commonly code up a menu/screen system for LCD displays ? Most of the apps I've done up to now have had reasonably simple interfaces, so the screen displays...
Monday, 22 March 2004 - 21:31
Trimming of A/D inputs
Hi again - I'm trying to decide on the best way to trim the inputs to the Mega8 A/D. This is to measure 0-12V mainly, using the internal 2.56V reference. So far I have the...
Saturday, 20 March 2004 - 06:40
Mega8 PB6/7 pins as general IO pins
I know that if you select the internal osc for the Mega8, you can use the PB6/XTAL1 and PB7/XTAL2 pins as general IO pins. But what about if you're using an external oscillator...
Friday, 19 March 2004 - 23:27
OT : Thumbwheel navigation switch
Dang it, I have digging all over for a thumbwheel switch. This is the type that used to be popular on cellphones, for scrolling through menus. The wheel rotates without stops,...
Friday, 19 March 2004 - 17:15
CallerID solution ?
Hi All - I've been poking around for a callerID solution on the net, and there seems to be a dearth of easy ways. The most popular appears to be to use the Moto MC145447 chip to...
Tuesday, 2 March 2004 - 21:32
OT: compsys1 site gone ?
Is anyone familiar with Ranjit Diol's site, http://www.compsys1.com ? It appears to be gone. The domain is still active in WHOIS, but email to rsdiol@mail.com returns as an...
Monday, 19 January 2004 - 18:06
Using 2313 comparator to see 60Hz from wallwart
Hi All - For a clock project I would like to use the 60Hz hum as an accurate source of a periodic signal. Over time, the 60Hz mains is very accurate ... I would like to be able...
Wednesday, 17 December 2003 - 23:52
OT: Mobil Speedpass interfacing ?
Does anyone know of any details for the Mobil Speedpass ? I can think of a couple of neat projects for rfid, and it seems silly to require a whole new token when there are...
Thursday, 16 October 2003 - 17:26

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