Mussel heartrate RevC
About the Mussel heartrate RevC PCB
Mussel heartrate RevC is an open source PCB design by millerlp, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 6.6 × 15.5 mm, with 15 components from 9 distinct parts.
By type, the board carries 4 resistors and 3 capacitors.
It belongs with the wearables and sensors designs in this gallery.
From the project
BivalveBit firmware
Based around a ATmega4808 microcontroller Designed to fit inside a nominal 3/4" schedule 40 PVC plumbing pipe (<18.5mm inside diameter) along with an 18650 size Lithium-Ion battery cell. Provides one I2C 4-pin port for communicating with a IR heart rate sensor Provides one analog 4-pin port for communicating with an analog sensor such as the A1395 Hall effect sensor (with SLEEP pin on the 4th wire). * Writes data to a standard microSD card
Mussel heartrate RevC bill of materials (BOM)
15 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | PINHD-1X10.7MM_DRILL | 1X01_SMALL_0.015IN_0.38MMDRILL | /~{INT}1, CATHODE1 |
| 4 | PINHD-1X1SMALL | 1X01_SMALL_HEADER_PIN_D0.9MM_W1.4MM | GND1, SCL1, SDA1, VDD1 |
| 1 | TMP117MAIDRVR | SON65P200X200X80-7N | TMP117 |
| 1 | VCNL4040M3OE | VISHAY_VCNL4040_4X2X1.1 | VCNL4040 |
| 2 | 0.1UF 0.1µF | C0402 | C1, C2 |
| 1 | 1UF 2.2uF | C0402 | C3 |
| 2 | 10K 2.2k | R0402 | R1, R2 |
| 1 | 100K 22ohm | R0402 | R3 |
| 1 | 2.2K 22ohm | R0402 | R4 |
Mussel heartrate RevC design files
The KiCad project lives in the millerlp/BivalveBit repository on GitHub; these links point at the commit this page was built from.
Mussel heartrate RevC: common questions
How big is the Mussel heartrate RevC PCB?
The Mussel heartrate RevC measures 6.6 × 15.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mussel heartrate RevC?
15 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Mussel heartrate RevC design files?
From the millerlp/BivalveBit repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Mussel heartrate RevC design in my own project?
Yes, under the terms of its GPL-3.0 license, which millerlp chose for the repository.
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