Oven Control with PSOC 4: Post 7

21 Dec 2013

I started with the op-amps. I put it in the non-inverting mode, I measured the voltage at the Arduino compatible I/O header J2. I could measure only digital voltage VDD = 3.42 volt. When the noninverting input is connected to VSS the output becomes zero. There is no in-between value. Though I selected 3 analog pins. I took one example for op-amp. For this also no analog output. If the pins can give only digital output then why analog pins are listed in components? Next I'll try the ADC input pins and check whether I can get an analog value. Following gives the screen-shot of the circuit.

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vsluiter over 11 years ago

Hi Dab,
It's not that weird is it? Looks like a standard noninverting opamp...Pin2 has a voltage divider as input, and pin 1 is the inverting input. Output voltage would be ( 1+(10k/20k))*Vin.

Mala: please do check all connections, I think you can also set up an opamp as buffer. If you're missing the feedback resistor it 'll act as a comparator....
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DAB over 11 years ago in reply to vsluiter

Hi Victor,

My eyesight is not what it used to be, which is why it looked a little strange.
That and I was less than coherent yesterday due to pain and sinus issues.

DAB
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DAB over 11 years ago in reply to vsluiter

Hi Victor,

My eyesight is not what it used to be, which is why it looked a little strange.
That and I was less than coherent yesterday due to pain and sinus issues.

DAB
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vsluiter over 11 years ago in reply to DAB

No problem, hope that you're having less pain now.
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