Using QT113 to make a simple heartbeat sensor

[filjoa]

QT113 and heartbeat

Hi

I buy this IC to try make an simple heartbeat sensor... I reade on datasheet and on page 6 stay this, I think...

but I try make the circuit and with an osciloscop don't see any signal of my heart.

I make the circuit of 1º page and to heartbeat I only add and 10k pulldown and on out put pin put my osciloscop, when I put my finger on pin 7 it stay work in normal mode (touch sensor).

some one know if this work fine like and simple heartbeat sensor?

I only need have the pulses from the heart to read on MCU.

datasheet link **broken link removed**

best regards

 

[filjoa]

Re: QT113 and heartbeat

Hi

anyone have an ideia how this not work like an heartbeat?

best regards