An Arduino library for simple means of putting your Arduino into sleep modes in order to save power when you are not doing much, supports a variety of common microcontrollers used with Arduino... Deep and Dreamless Slumber (Forever Sleep) Sleeping forever is the simplest type of sleep...

Rui Santos has a great write-up on building a Multisensor Shield for ESP8266, that is available on GitHub: In this project you’ll discover how to design and create a Multisensor Shield for the ESP8266 Wemos D1 Mini board. The shield has temperature sensor (DS18B20), a PIR motion...

Power Stage DesignerTM is a JAVA based tool that helps engineers accelerate their power-supply designs by calculating voltages and currents of 20 topologies according to the user’s inputs. Additionally, Power Stage Designer contains a Bode plotting tool and a toolbox with various...

CO2Meter is using Gas Sensing Solutions’ (GSS) ExplorIR-W LED-based CO2 sensor to measure concentrations of up to 100% in its extended range of CO2 detection devices. [via] CO2Meter recently added the iSense alarm (CM-0052) to its range of CO2 alarms, which can handle up to...

Stream and log data with the first high resolution, open source, portable data logger that will launch soon on Crowdsupply. OpenLogger is an open source, low-cost, data logging platform. With the option of Wi-Fi or USB connectivity and microSD card storage, you can remotely monitor...

The wESP32 is an ESP32 core board with wired Ethernet connectivity and Power over Ethernet that was designed to help Makers quickly create zero-setup single-wire-install connected devices. By combining a powerful microcontroller with excellent community support, 13 W of power, and...

Matthias Dankers build his own cigarette humidor controlled by Arduino. He writes: For the optimal storage of cigars you would want a box with a so called 'Caribbean' climate inside; warm and very humid. Translated in numbers that would be 21 degrees Celcius (70F) and 70% relative...

PHP which stands for Hypertext Preprocessor is one of those server-side programming languages that is widely used across web-related applications. PHP has found applications in countless web development projects and even other cloud-based applications. But PHP applications don't seem to...