Test Tube Photometer opt101 module.

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J11Conn 01x03 Male JST EH B03B-EH-A 1x03 P2.50mm Vertical
O11opt101 DIP-8 W7.62mm
R11R R 0805 2012Metric Pad1.15x1.40mm HandSolder
RV11R POT Potentiometer Bourns 3214J Horizontal

Test Tube Photometer PCBs

For full project details see the main README.

Kitspace page

First version of a Arduino Nano HAT to connect multiple photometer cells. It works BUT.


  • jst connectors too close together

Kitspace page

Second version of the Arduino Nano HAT. It looks better and works BUT.


  • connections/annotation screwed up.

(I'll never learn)

Kitspace page

PCB that fits the opt101 and a potentiometer to set the sensitivity of the sensor. Works great and fits perfectly into the housing of the measurement cells.

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