User avatar
RedDragon
Posts: 3
Joined: Sun Jun 03, 2018 5:57 am
Contact: Website

Digital VoltMeter for beginners

Thu Jun 14, 2018 10:21 am

I am looking for experienced programmermate to construct a digital voltmeter application.

The project is based on MSP430 microcontroller with Raspberry Pi. The microcontroller function as a low frequency 16bit+sign resolution 26V maximum input VoltMeter. It has an OLED 0.91" display for standalone measurements and a radio communication to Raspberry Pi for extendending its capabilities.

The project is for beginnersas a first task to assemble a kit and download software and have a Digital VoltMeter to work.

B.Goode
Posts: 6005
Joined: Mon Sep 01, 2014 4:03 pm
Location: UK

Re: Digital VoltMeter for beginners

Thu Jun 14, 2018 10:48 am

RedDragon wrote:
Thu Jun 14, 2018 10:21 am
I am looking for experienced programmermate [ ... ] The project is for beginners


Can you clarify?

Do you want a beginner or experience?

Is this a kit you have purchased and need help to put together?

Or is this a product you are hoping to develop and need skilled help to bring to market?

Idahowalker
Posts: 239
Joined: Wed Jan 03, 2018 5:43 pm

Re: Digital VoltMeter for beginners

Thu Jun 14, 2018 12:21 pm

I use an Arduino Mega with my PiB. One of the functions is that the Arduino measures voltages into the A to D converter via a voltage divider. According the the math, I should be able to measure up to 50 volts. The raw reading from the A to D converter is sent to the RPi for process and displayed on a OLED.

When I compare the measurement taken and displayed by the Arduino/RPi to my DMM, the readings are equal.

The project is quite doable.
Being a programmer: She says go to the store get 1 bottle of milk, if they have eggs bring back 6. She gets mad cause I brought back 6 bottles of milk.

hippy
Posts: 3156
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: Digital VoltMeter for beginners

Thu Jun 14, 2018 3:11 pm

Idahowalker wrote:
Thu Jun 14, 2018 12:21 pm
The project is quite doable.
Using a micro or adding an ADC should allow a volt meter to be built round a Pi but I'm not so sure about achieving 16-bit plus sign resolution. Not sure that's even needed.

I would suggest that if the project is to have an OLED display it might be better to step it up from being just a volt meter to having some beginner level oscilloscope capabilities. That could make it a more appealing and useful project for beginners to undertake.

But it's not clear what "beginners" we are talking about here.

Return to “Automation, sensing and robotics”

Who is online

Users browsing this forum: No registered users and 13 guests