Hey Fellow Reefers,
I wanted to share a cuvette mixer I made to mix the dry Hanna Checker reagents. I use this for the phosphate checker (2 min mix time), and the Calcium checker (15s mix).
It runs off of 2 AA batteries, there is a voltage boost board to get the ~3V battery voltage up to the operating range of an Arduino nano. The nano is connected to a micro-servo which rotates the cuvette back and forth 180 degrees before stopping after 2 mins. Spend more time reefing and less time mixing!
![IMG_0981.jpg IMG_0981.jpg](https://www.reef2reef.com/data/attachments/1738/1738429-bbbeace501cc182f08ebd150dc1f1deb.jpg)
I wanted to share a cuvette mixer I made to mix the dry Hanna Checker reagents. I use this for the phosphate checker (2 min mix time), and the Calcium checker (15s mix).
It runs off of 2 AA batteries, there is a voltage boost board to get the ~3V battery voltage up to the operating range of an Arduino nano. The nano is connected to a micro-servo which rotates the cuvette back and forth 180 degrees before stopping after 2 mins. Spend more time reefing and less time mixing!
![IMG_0981.jpg IMG_0981.jpg](https://www.reef2reef.com/data/attachments/1738/1738429-bbbeace501cc182f08ebd150dc1f1deb.jpg)