Pulse monitor works as follows.
Finger heartbeat detection sensor module.
The led is turned on on one side of the finger and photo transistor is on the other side of the finger.
When the sensor senses light it becomes more resistant causing the voltage reading in the serial monitor to go down.
This heart beat detection module uses bright infrared ir led and a photo transistor to detect the pulse of the finger a red led flashes with each pulse.
Pulse monitor works as follows.
This heart beat detection module uses bright infrared led and a photo transistor to detect the pulse of the finger red led flashes with each pulse.
The sensor is made to shine an infrared led through your finger.
This ky 039 finger detection heartbeat measuring sensor module uses bright infrared ir led and a phototransistor to detect the pulse of the finger a red led flashes with each pulse.
Finger measuring heartbeat module this project uses bright infrared ir led and a phototransistor to detect the pulse of the finger a red led flashes with each pulse.
The led is turned on on one side of the finger and photo transistor is on the other side of the finger.