KnowFlow is the name of this water quality monitoring device, based on "Arduino Uno". It can automatically monitor 5 parameters of water: pH, Temperature, Dissolved Oxygen, Electronic Conductivity, ORP.
- Central Control Unit: DFRobot Bluno and Expansion Shield (DFRobot Expansion Shield V7.1 in this case)
- Water Sensors: pH (pH probe and pH circuit board); EC (EC probe and EC circuit board); ORP (ORP probe and ORP circuit board); Temperature (temperature probe and temperature circuit board); Dissolved Oxygen (DO probe, BNC and circuit board); real time clock circuit board
- Data Storage: Micro-SD module, Micro SD card
- Fit and fix: mounting plate, water proof box( 200mm_150mm_75mm), water proof joint
- Other parts: Cables (Wires), bread board, bolts and nuts, screws, battery, double-sided adhesive, write on tape, small wrench, spiral cable wrap
Project 2. How to Make an Automatic Christmas Tree
With all the lights and decorations that people use at Christmas, power is left on all the time and electricity bills skyrocket. I made this motion detecting Christmas tree light setup that only turns on when people are nearby.
PIR Sensor x1
I/O Expansion Shield v7.1 x1
LED Strip x1
Relay Switch x1
Mini mp3 module
Regular power extension lead (with some modifications)
1k resistors x2
Project 3. How to Make a Santa Alarm
Using the new RGB color sensor available at DFRobot, I rigged up a simple proximity alarm. I can use this to warn me if someone is in a close range of my Christmas tree putting presents under there. The hardware of this project is pretty simple and suitable for beginners.
1 x Bluno Microcontroller v2.0 (SKU: DFR0267)
1 x Gesture Sensor
1 x I/O Expansion Shield v7.1 (SKU: DFR0265) (the extra I/O’s are very useful and prevent messy wiring!)
1 x Digital Buzzer Module (SKU: DFR0032)
1 x 220R Resistor (any will do)
1 x Red LED
1 x Breadboard (for prototyping and checking the circuit – any will do.)
Jumper Wires for connections
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