2020-01-25 (Sa) ProjectHoneybee

Hunting for genuine parts can be discouraging. Sometimes, buying an entire counterfeit module is less expensive than the single component on that board. Prices like those are also a strong hint that it is not authentic. While I was searching for sources for MAX30105 units, I checked eBay and found that MAX30102 demo boards were cheaper by a factor of ten, and they were still less expensive than the raw modules of either type. Additionally, some of the demo boards had slots along the sides for a finger strap. I decided to buy handfuls of these modules and solder some coiled wire to them rather than making the sensor part of the badge. The cable from a phone headset should be an inexpensive option, and one of the ends can have an RJ11 connector for a modular look. Choosing this route eliminated a lot of the trouble of deciphering the sensor circuit and added functionality.
RJ11 port for the sensor

The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6

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