HardLabs

Voltage monitor

lwa-project·voltage_monitor·VoltageMeter/VoltageMeter.kicad_pcb

Voltage monitor PCB layout, top view — open source AVR/Arduino board by lwa-project

About the Voltage monitor PCB

Voltage monitor is an open source AVR/Arduino PCB design by lwa-project, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 95.3 × 78.7 mm, with 15 components from 8 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. By type, the board carries 4 resistors, 2 connectors, 2 fuses, 2 diodes and 1 module.

From the project

Software for monitoring the voltage on 120VAC and 240VAC lines

Line (Voltage) Monitoring Software ==================================

This directory contains a collection of software for interfacing with a Arduino connected to a custom PCB for monitoring AC line voltage.

This software depends on the following python modules: pySerial backports.zoneinfo (Python < 3.9 only) * wxPython

Contents -------- lvmb.py - Python module for interfacing with the Arduino and reading the voltage.

Main components on the Voltage monitor

Arduino_Nano_v3.x

Voltage monitor bill of materials (BOM)

15 components, 8 distinct parts.

QtyPartRefs
1
Arduino_Nano_v3.x
A1
2
Conn_01x02_Male
J1, J2
2
Fuse
F1, F2
2
10k
RV1, RV2
2
TRANSF6
TR1, TR2
2
B40C5000-3x00A
D1, D2
2
665k
R1, R2
2
120k
R3, R4

Voltage monitor design files

The KiCad project lives in the lwa-project/voltage_monitor repository on GitHub; these links point at the commit this page was built from.

Voltage monitor: common questions

What microcontroller does the Voltage monitor use?

The Voltage monitor is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the Voltage monitor PCB?

The Voltage monitor measures 95.3 × 78.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Voltage monitor?

15 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Voltage monitor design files?

From the lwa-project/voltage_monitor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Voltage monitor design in my own project?

Yes, under the terms of its GPL-2.0 license, which lwa-project chose for the repository.

Can I test firmware for the Voltage monitor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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