Method for Powering Arduino Microcontroller and Shield using a Battery By: Drew Newell 3-30-12 Abstract: This note describes a method of using a LM117 regulator to power the Arduino platform using a deep cycle battery. The design assumes high voltage and ambient temperatures which results in a flexible and robust design. Chassis requirements are also described.
7
Embed
Method for Powering Arduino Microcontroller and Shield ...
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Method for Powering Arduino Microcontroller
and Shield using a Battery
By: Drew Newell
3-30-12
Abstract: This note describes a method of using a LM117 regulator to power the Arduino
platform using a deep cycle battery. The design assumes high voltage and ambient temperatures
which results in a flexible and robust design. Chassis requirements are also described.
Introduction and Objectives
The main objective of this application note is to describe a method of powering an Arduino
microcontroller using a battery. Additionally, the power requirements of peripheral hardware, in
this case a GSM shield, were taken into account when designing this supply. This flexibility
incorporated into the design allows this power supply to be used in most any Arduino/Shield
application.
Identification of Power Requirements
Through experimentation, the Arduino with GSM shield were found to draw 500mA with a peak
draw of 1.5A on the rare occasions when the shield is first trying to establish connection to the
network. A deep cycle 12V battery was used as a power supply (simulated using a wall power
supply). Due to low power demands, a LM117 voltage regulator can be used.
Typical (A) Max (A)
Arduino/GSM Shield 0.5 1.5
LM117 1.5 2.2
Below is the PSPICE verification of the circuit design.