avrclub : AVR club - A club is all about ATMEL AVR microcontroller!

avrclub · AVR club - A club is all about ATMEL AVR microcontroller!

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Members: 2484
Category: Microcontrollers
Founded: Feb 9, 2000
Language: English

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Description

Atmel AVR Microcontroller discussion group!

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RE: [AVR club] AVRĀ Butterfly/ADC Question Also, Ā if the input on vin is 3.1 volts, then due to the divider the input to the a/d pin with be (3.1 *300k)/(1.5m + 300k) = 0.516 volts (a remarkable Posted - Wed Jan 13, 2010 2:00 pm	STEVEN HOLDER s.holder123... Offline Send Email
RE: [AVR club] AVRĀ Butterfly/ADC Question Hi, Ā Are you talking about the Vin line that goes to PF1 with a 1M5 / 300K voltage divider ? the input to the pin is zener protected with a 1v8 zener ?. Ā Posted - Wed Jan 13, 2010 1:56 pm	STEVEN HOLDER s.holder123... Offline Send Email
RE: [AVR club] AVRĀ Butterfly/ADC Question I've got another Butterfly in the shack, I'll check that one later. Thanks again Martyn ... From: avrclub@yahoogroups.com [mailto:avrclub@yahoogroups.com] On Posted - Tue Jan 12, 2010 11:30 pm	Martyn Kinder martynkinder Offline Send Email
Re: [AVR club] AVRĀ Butterfly/ADC Question well..... there you are. altho I don't recall ever noticing a schematic error for that zener...must be the pin numbers. the symbol is drawn correctly, with the Posted - Tue Jan 12, 2010 10:58 pm	wg0z@... wg0z Offline Send Email
RE: [AVR club] AVR Butterfly/ADC Question Hi Steven I have sorted it, the problem was the Zener Diode inserted wrong way round. It is also incorrect on the schematic diagram...I have simply cut the Posted - Tue Jan 12, 2010 10:11 pm	Martyn Kinder martynkinder Offline Send Email
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