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“Use Cypress Solar-Powered BLE Sensors, an Arduino UNO, and an HM10 BLE module to make your own multi-node temperature and humidity monitor and display. Previously, we presented an overview of the new solar BLE beacons from Cypress Semiconductor. It is …
“Current sensor amplifier and over current switch project is based on ACS714-30A current sensor and LM358 Op-amp, ½ of LM358 op-amp used as an amplifier for low voltage and 2nd 1/2 LM358 op-amp used as comparator which provides …
“Previously I made a DC motor Speed Controller, the design was good but it could be used with only 12 V motors. Soon I needed to control 24 V motors, so I had to come up with a design I …
“This is a temperature/humidity/noise detector to be used in any room, in this case a library. This device continuously takes the input devices and logs the data into the dashboard with a buffer of 1 hour and access …
“This project was born out of constellation of things and desires :) I’ve always wanted to make up a CMOY amplifier, just because I think it is a cool project and I always wanted to see if the headphones amplifier …
“This project is called the NC741 because Noise Cancelling with 741. Also NC741 sounds cool. The purpose of this build is to show that Noise Cancellation is possible with basic parts like OP-Amp. And that application of fundamental physics …
“Passive Infrared (PIR) sensors detect motion in a local area and are the sensor of choice in security systems, home automation and proximity-sensing applications. The SparkFun OpenPIR is a highly customizable PIR sensor based around the NCS36000 PIR controller. The …
“PaperSynth v2 is an “8-bit synth” circuit for creating musical square wave tones - made with paper, copper foil tape, an ATTINY85 microcontroller and some simple electrical components.”
“At or farms, we required to install a few lights that would automatically turn on at night and turn off at dawn and since we required quite a few, it had to be cost effective and efficient. I thought about …
“In this Instructable, I am going to show you how to build a Solar powered WiFi Weather Station with a Wemos board.The Wemos D1 Mini Pro have small form-factor and wide range of plug-and-play shields make it an ideal …