IO Expansion shield is one of the market favourites. Fast robotics prototyping made affordable and simple thanks to this design. Soldering and wiring often become a problem when a bridged connection happens and components break. Increasing time and cost for projects. Often, without this solution and a soldering station, wire cripping tools or soldering station, robot prototyping or electronics DIY becomes a very long term project.
The DFRobot Expansion shield introduced to the market the famous color code for sensors and actuators' input and output. The 3 pin format for Signal, Voltage, and Ground is extremely useful, especially if used altogether with our increasingly large range of modules, sensors, and devices that just fit.
The new version includes a voltage hardware setting through a jumper to allow compatibility with a bigger range of components at 3.3v like Raspberry pi, Due, and others.
It also includes a Servo external power, with a protective diode. This way you can enable a large range of servos from your Arduino.
The latest version features a convenient switch that lets you program your ATmega328 boards like UNO, while you have another Serial device connected like an Xbee. Switch it, program it, and get it back up and running with another switch. You don't need to disassemble your hardware or wiring.
A LED on top board and a reset button is in order to make it just a natural extension to Arduino boards. The LED is connected to pin 13.
Compatible with the new Arduino Due
3.3V/5V operating voltage select
Switch for wireless communication & programme
More Easily recognitive interfaces
Colorful header for illustrating digital or analog pins
Immersion gold surface
4.8-6V, SERVO_PWR, depending on your servo
Compatible module voltage: 5V/3.3V
Support interface: I2C, SPI, Xbee (Xbee pro), Bluetooth, APC220
Fit and fix: mounting plate, waterproof box( 200mm_150mm_75mm), waterproof joint
Other parts: Cables (Wires), breadboard, bolts and nuts, screws, battery, double-sided adhesive, write on tape, small wrench, spiral cable wrap
Project 5. How to Make An Automatic Water Changing System
Introduction: This simple system detects water quality through simulation Gravity: Analog pH Sensor / Meter Kit For Arduino and Gravity: Analog Turbidity Sensor For Arduino,
and supplies and drains water through the submerged pump and solenoid valve.