This guide explain how to build from scratch the BotaBotLab's Phototubridostat V1. This device integrate autonomous sub-modules that can be used for different applications. The following module are described in this guide but more detailed information can be found on their specific guides:

• Wi-Fi Persitaltic pumps V1
• Wi-Fi Level sensor (pump calibrator) V1
• Wi-Fi Turbidimeter V1
• Wi-Fi Neopixel light V1

• Arduino Mega
• Arduino Nano
• Arduino Pro Mini

You can use cheaper arduino clones

• Wemos D1 Mini
• ESP-O1
• Wemos D1 Node MCU V3

• GL5528 Photoresistor
• 10KOhm resistor
• 470µF 5V capacitor

We used an Orange Pi Win Plus but any SBC would work as long as it is able to run Node-Red.

• 3D Printer
• Soldering iron
• Screwdriver, plier, …

• 1.75mm Plastic (ABS, PLA, PETG, …)
• Solder wire
• Expoxy resin

• Arduino IDE or any IDE compatible with Arduino and ESP boards
• Repetier or any software to slices 3D models and control your 3D printer
• Node-Red
• Putty

By default, the arduino IDE is compatible only with the Arduino Boards. As we also wanted to use ESP8266 board to being able to communicate with the Node-Red server via MQTT, it is mandatory to add ESP support to the Arduino IDE. Further infromation can be found on The following instructable

Some Singl Board Computer distributions such as Raspbian for the Raspberry Pi have Node-Red preinstalled. It was not the case for the Armbian distro for the Orange Pi. The following commands allows to install and setup Node-Red on almost any SBC (et least thoses running on Ubuntu/Debian).

First of all, update your board by typing the following commands on the terminal :

sudo apt update
sudo apt upgrade