Dolphin robotic cleaner which needs a “robotic finger” to operate

2 February 2020

I started with a much simpler robotic finger, basically to save me the pain of opening my pool pump box, every single day and then pushing the cleaner button OFF and then ON again. You can however get as sophisticated as you want with this exciting technology…

I rent a house which has an absolutely brilliant robotic cleaner called a ‘Dolphin’. It works well except you have to switch it OFF, wait 20 seconds and then switch it ON again for it to operate.

Apparently the next model up has a bluetooth interface for many hundreds of dollars more. If I want that option, after the fact, I would have to replace the whole cleaner…not great news!!

I thus set-about making a “robotic finger” to mimic this action every day, at a set time.

I use the famous Raspberry Pi 3. The first version of the ‘Robotic finger’s was, ummm… unreliable mechanically, I thus redesigned it. It also has a camera which shows me that the pump is running and the LCD display of the Davis pH meter. The first version is shown below:

Output from pool cleaners' web interface on Jekyll
The RPI 3 takes a photo everyday of the Davis pH meter and the indication of the pump master controller and publishes this photo to a Jekyll website

The ‘Robotic finger’ work-bench tested as follows:

“Automation” is what robots do best, things that are either too complex or to mundane for humans. I love this simple robot which takes blood pressure, SPO2, pulse rate (PR) and temperature from your finger and displays these parameters on an OLED screen!

Pulse, blood-pressure, SPO2 and temperature, “robot”
It comes in different colours for those whom think the black unit is too bland!