Table of contents

• Overview
• Libraries
• Output
• Schematic

Overview

• Name : MAX471_VI_Meter
• Title : Arduino Project , Voltage and current meter based on MAX471 sensor
• Description :

1. An Arduino Nano uses a MAX471 current and voltage sensor to measure a Load and displays output to an ERM19264 UC1609 LCD
2. Current reading range 0-3 A
3. Voltage reading range 3-25 V
4. ATmega328 battery internal reference voltage used for analog measurements
5. Output to LCD and serial monitor

• Author: Gavin Lyons
• Arduino IDE: 1.8.16
• Copyright: GNU GPL v3

Libraries

Libraries used , both written by Author and on github.

1. MAX471
2. ERM19264_UC1609

Notes: When using the LCD library fonts 1-3 must be enabled in font file and multi-buffer mode selected. re MAX471 library, If deciding to use a different IC not based on ATmega328p the Vref would have to changed from VCC_BAT in constructor.

Output

Schematic