Re: trying to understand the REF pin on a DAC
- From: Peter Bennett <peterbb@xxxxxxxxxxxxxxxxx>
- Date: Tue, 30 Oct 2007 11:06:51 -0700
On Tue, 30 Oct 2007 13:50:42 -0000, kasterborus@xxxxxxxxx wrote:
Decimal is the input pin of an Arduino "analog in" - I'm not sure if
full scale is 500, or 1000, but as you can see the DAC is not
returning analog voltages quite in step with the input commands.
If you are unsure of the Arduino ADC characteristic (and because your
software reading the ADC may have problems), you should measure the
DAC output with a voltmeter - that should give you a clear indication
of what the DAC is doing, without the added confusion of having to
read the ADC.
To confirm operation of the ADC, you could apply a variable voltage to
the ADC input, and see how the readings vary as you vary the voltage.
--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
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- References:
- trying to understand the REF pin on a DAC
- From: kasterborus
- Re: trying to understand the REF pin on a DAC
- From: John Popelish
- Re: trying to understand the REF pin on a DAC
- From: John Popelish
- Re: trying to understand the REF pin on a DAC
- From: John Popelish
- Re: trying to understand the REF pin on a DAC
- From: kasterborus
- Re: trying to understand the REF pin on a DAC
- From: John Popelish
- Re: trying to understand the REF pin on a DAC
- From: kasterborus
- trying to understand the REF pin on a DAC
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