pH meters are scientific instruments used for measuring the activity and concentration of hydrogen-ions in water-based solutions, with the aim of indicating its acidity or alkalinity expressed as pH values. They find application in water & wastewater treatment, pharmaceuticals, chemicals & petrochemicals, food & beverages, mining, and agricultural processes to mention a few. For today’s […]
PHMETER – ARDUINO PH METER Continue Reading
The mass flow meter SFM4300 features improved sensitivity and precision, even for low flow rates. The small, compact sensor is calibrated for air, O2 and N2O gases and – in contrast to its predecessor, the mass flow meter SFM4100 – it can also be used to monitor gas mixing. With a zero-point accuracy of 0.005 slm for a total range of up
SFM4300 – MASS FLOW METER FOR SENSITIVE GAS MIXTURE MEASUREMENT AT LOW FLOW RATES Continue Reading
In this project, we will be making a benchtop pH meter using the gravity analog pH circuit and probe from Atlas Scientific and an Arduino Uno. Readings will be displayed on a liquid crystal display (LCD). MATERIALS 1 – Arduino Uno 1 – Gravity analog pH sensor 1 – pH probe 1 – 20×4 LCD module 1 – 158x90x60mm Enclosure
ARDUINO PH METER Continue Reading
This Application Note from Microchip provides a reference design for building a non-invasive blood pressure meter using the PIC24FJ128GC010 microcontroller and MCP6N11 instrumentation amplifier. A digital blood pressure meter measures systolic and diastolic pressures by oscillometric detection. Microchip’s digital blood pressure meter demo can measure blood pressure and pulse rate during inflation. The Measurement While
Digital blood pressure meter design using PIC microcontroller Continue Reading
Arduino Fart-O-Meter Project Innovation in electronics often emerges from playful experimentation, and this project—though humorous in concept—demonstrates practical use of wireless communication and sensor integration. The Arduino Fart-O-Meter is essentially a system designed to measure methane emissions (commonly associated with human flatulence) and transmit the data wirelessly to a receiver unit for visualization. Project Overview
Arduino Fart-O-Meter Continue Reading
With all the different ways capacitors are labeled, figuring out the values of your capacitors can be challenging. Especially if you don’t have a digital multi-meter to test them. In this tutorial, I’ll show you how to build three different capacitance meters using an Arduino and a couple resistors. After finishing this project, you’ll be able to measure all
How to Make an Arduino Capacitance Meter Continue Reading
In this project I will show you how I combined an Arduino, an INA219 power monitor IC, an OLED LCD and a Micro SD Card PCB in order to create a power meter/logger that has more functions than the popular USB Power Meter. Let’s get started! Step 1: Watch the Video! The video gives you
Make Your Own Power Meter/Logger Continue Reading
This project brings back the old time Analog VU Meter, with the added functionality of a neat looking clock! When you turn off your music the meters automatically swing into to clock mode. Behind it all is the popular and easy to use Arduino. This is my submission for the Make-to-Learn Youth Contest: What did
Analog VU meter and Clock using Arduino Continue Reading
O’K, after having some fun with stereo version of the VU meter I described in my previous blog-post, now it’s time to do a serious stuff. Studio grade VU meter !!! 24 steps, equally spaced every 3 dB, covering Extra wide Dynamic Range from -63 up to +6 dB. Single (mono) channel this time, no messing around,
Audio VU meter with Extra wide Dynamic Range 69 dB using Arduino Continue Reading
Homebrew SWR and power meter To begin with, this SWR meter featured in this article is not completely homemade, as I used the circuit design from the schematic in the highly regarded book Arduino Projects of Amateur Radio. Despite purchasing the book and honoring the authors’ copyright, I will still provide my own diagram here.
DIY SWR and Power Meter Continue Reading
