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Protocentral / protocentral_max30003

Breakout board for the Maxim MAX3003 single-channel ECG AFE
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Ecg circuit #9

Open amir1994a opened 6 years ago

amir1994a commented 6 years ago

Hi there, I've been trying to get a response from my board which I designed using your schematics in the past month.I'm afraid I cannot get any signal in the output. My filter is like your filter in your schematic except i'm using 47k resistor instead of 49.9k of yours.

The datasheet says that the ic has a 1v on the vref pin but I cannot get such value on my board. Will you please check vref of your board and inform me if you get the 1 volt? As you know vref voltage can be measured by measureing the voltage over the 10uf capacitor it is connected to.

If you help me a little bit,I'll be forever thankful.

Thank you very much Best regards, Safaei

georod99 commented 6 years ago

Hi, I'm a retired physics teacher, thou I worked in the physics labs at Havana University for many years. I'm trying somebody to help me to get HRV real-time. What is your objective? More after you answer. Thanks.