| Price | $4 |
|---|---|
| Category | Sensors |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
An open-hardware optical pulse sensor about the size of a coin: a green LED shines into a fingertip or earlobe and an APDS-9008 photosensor watches the light that comes back, with an amplifier and filter on board turning the tiny pulse into a clean analog waveform. Three flying leads, one analog pin, and the PulseSensor library does the beats-per-minute maths. It needs a still hand, and it is not a medical instrument.
Key features
- Green LED plus APDS-9008 photosensor - reflective PPG
- Amplifier and filter on board, output swings around Vcc/2
- Analog output - one ADC pin, library does the BPM
- 3V to 5V, about 4 mA at 5V
- About 16 mm across, 3 mounting holes, ~610 mm lead
- Movement-sensitive; a hobby sensor, not a medical device
Details
Specifications
| Type | Optical (photoplethysmograph) pulse sensor, breakout with support circuitry |
|---|---|
| Light source | Reverse-mounted green LED |
| Detector | Avago APDS-9008 ambient-light sensor |
| Output | Analog, centred on Vcc/2 |
| Operating voltage | 3V to 5V DC |
| Current | ~4 mA at 5V |
| Dimensions | ~16 mm diameter (0.625 in), 3 mounting holes |
| Cable | 3-wire, ~610 mm |
| Wear position | Fingertip or earlobe |
