V5.0 Arduino Sensor Shield with External Power Support
The V5.0 Arduino Sensor Shield with External Power Support allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers etc. to your Arduino Uno.
Each pin has a corresponding VCC and GND pin to easily connect a module and supply power to it.
External power support
An extremely useful future is that this shield accepts external power for that high power demanding devices like servos and motors.
Next to the power input is a jumper that is used to select between internal power (from your Arduino) and external power.
Arduino sensor shield technical specifications
- PIN13 LED Pilot
- Digital IO Ports D0-D13
- Analog IO Ports A0-A5
- Reset Button
- Power In
- Power LED
- LCD Parallel Interface
- LCD Serial Interface
- UART interface
- SD interface
- Bluetooth Interface
To begin with the Sensor Shield V5.0 fits Uno, Mega 2560 and similar form-factor Arduino boards.
Therefore provides a convenient way to interface to sensors and other peripherals such as servomotors.
KEY FEATURES OF SENSOR SHIELD V5.0:
This shield brings out the standard Arduino I/O pins to headers along with dedicated ground and power pins per I/O to facilitate connecting sensors other devices.
Also the shield has several dedicated connectors that are defined for specific purposes as outlined below.
But we can also consider them as general purpose connection points.
An auxiliary power connector allows separate power to be supplied to the power pins associated with the D0-D13 pins, which is handy for driving servo motors.
They also locate a remote reset switch on the shield for easy access.
It also brings the on-board pin-13 ‘L’ LED up to the shield for easy visibility.
One benefit of this shield is that it brings each of the standard Arduino I/O pins out to 3-pin headers along with a dedicated Ground and VCC pin.
The VCC pins associated with A0-A5 as well as the misc I/O connectors are all hard-wired to the Arduino 5V power.
Therefore sensors generally need as clean of power as possible, so keeping these on the Arduino 5V makes sense.
The VCC pins associated with D0-D13 are controlled by the SEL jumper.
SEL jumper installed = The Arduino 5V power is connected to these pins as well.
Therefore this mode facilitates using digital sensors and other low power I/O.
SEL jumper removed:
The Arduino 5V power is removed and the power for the pins must be supplied by a separate power supply connected to the 2-pos screw terminal.
They commonly use this when servo motors are being driven so that it can power them from a separate power supply.
Since they exceed the current capability of the built-in 5V and the servo motors create too much electrical noise back into the Arduino electrical system.
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