Arduino
BBC microbit
Raspberry Pi
ESP family
AVR
KY-039 Finger Detector Heartbeat Detection Sensor
Rs 125.00
This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse.
Out of stock
This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse.
Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slight changed.
We chose a very high resistance resistor R1, because most of the light through the finger is absorbed,it is desirable phototransistor sensitive enough.Resistance can be selected by experiment to get the best results.
The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ fluctuate, so faint heartbeat will add considerable noise.
Package Include:
1x heartbeat Sensor Module
Be the first to review “KY-039 Finger Detector Heartbeat Detection Sensor”
- All items sold as tested are genuinely tested before dispatch.
- Product(s) which show obvious signs of misuse, damage or weather damage will not be eligible for refund or replacement.
- All items are security marked.
- Please ensure all security markings and stickers are intact or any warranty offered will be void.
- All items are subject to satisfactory inspection of the anti-tamper warranty sticker/seal.
- Any evidence that these aforementioned stickers/seals have been removed or broken will render the item out of warranty and will not be covered under warranty rules.
- If the item becomes faulty within that period a replacement will be issued free of charge upon receipt of the faulty item, back to us, if proved to be faulty upon inspection.
- If the item is not faulty or can be repaired, not to the detriment of the item, then this shall be undertaken rather than direct replacement.
Related products
Sensors & Accessories
Sensors & Accessories
Sensors & Accessories
Sensors & Accessories
Sensors & Accessories
Sensors & Accessories
Reviews
There are no reviews yet.