Category: Test/Measurements

Dani Eichhorn @ thingpulse.com writes: In this post I’m going to show you how you can monitor the power consumption of your battery driven (ESP8266/ ESP32) device. Measuring the power consumption over a full activity/ sleep cycle is the precondition to optimize your code for a longer...

Nowadays, electrical fields are being used not only in electrical engineering, but also for industrial, weather forecasting, safety, and medical applications. As a result, the need for a precise electric field strength measurement device has become increasingly high, and many...

danielrp @ instructables.com writes: This is an accurate milliohm meter with a maximum resolution of 0.1mOhm. The design is very simple, the whole assembly can be built in a couple of hours once all the parts are gathered. It is based on a precision current sink and a high-resolution...

Pokit is a Multimeter, Oscilloscope & Logger that Fits in Your Pocket and connects wireless to your smartphone or tablet. It is compatible with iOS and Android devices while enables you to make measurements on the go. It's suitable for the maker and enginners that want an easy to...

by Jennifer Chu | MIT News Office: Now physicists working in MIT's Laboratory for Nuclear Science have designed a pocket-sized cosmic ray muon detector to track these ghostly particles. The detector can be made with common electrical parts, and when turned on, it lights up and counts...

This article describes a simple continuity tester based on an ATtiny85. The tester features a buzzer that sounds to help you determinate the trace continuity. It is designed for checking circuit wiring, or tracing out the tracks on a PCB. According to it's author David Johnson-Davies it...

An ECG patch with HRV monitoring that's open source, affordable, and Wi-Fi/Bluetooth connected. HeartyPatch is a completely open source, single-lead, ECG-HR wearable patch with HRV (Heart Rate Variability) analysis. It is based on the popular ESP32 system-on-a-chip. By using low-cost,...

David Johnson-Davies @ technoblogy.com build a four-channel thermometer that monitors the temperature at four temperature sensors, and gives a continuous readout on a small 128x32 OLED display. It's a useful project for various applications like PSU or PC monitoring. The article...