Relay

A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.

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DehneEVSE - Open source EV charging station

“I designed and built my own EVSE EV Charging station from scratch because I wanted 2 stations with each 22kW support (3 phase, 400V, 32A) and “real-time” current & voltage measurements on all phases - in order to be able to do …

Bathroom Ventilation Fan Controller

“Now a few weeks in test and performing so well… ! An Arduino controller to very effectively keep the humidity to an acceptable level. WHY (oh why…?) Well I looked for a good solution to keep the humidity level down in …

Timer With TM1637 and Arduino

“This timer is useful in both domestic and industrial applications. It is a countdown timer programmable in the range of 1s …. 9999s. During this time, the load is powered by a relay on the board. For repeated timings, it is …

Raspberry Pi 4 NAS out of an old Power Amplifier

“A Raspberry Pi 4 as NAS server with two WD red 4TB out of an old 19” power amplifier case. (Hard- and software). I had played around with the NAS feature of my router in the past, but quickly reached …

School Bell Ring

“This project shows you how to automate and control from a mobile phone a school bell ring using a ESP8266 module with a relay and Blynk The main features could be the following: Access to a network wifi to control …

Smart Home With Multiple NodeMCU ESP8266 Network With Blynk

“In this IoT project, I have shown how to make IoT-based Smart Home Automation using Multiple NodeMCU ESP8266 network to control all the home appliances from the pushbuttons & Blynk App. If the internet is not available, then you can control …

JAL Project- Household Water Usage Tracker

“This Water Monitoring System would enable a society or houses to monitor, limit and record their water usage Water is the most important and critical part of our life. This clear, amorphous liquid is key to our life. Water Conservation …

Open Grow Light

“Exactly a year ago (February 2020), James’ wife wanted to expand her plant growing setup in the house. This included a bigger, larger, taller plant growing area AND the need for more lighting. BINGO! The seed for the Idea was …

Arduino Watering System

“Another intresting project to consider is the Arduino Watering System. Everyone has at least one plant in their room, kitchen or balcony. Is essential keep them fed and keep the soil moist, and if you don’t have a good …

Battery capacity tester

“Battery tester using an ESP32, micro SD cards and Arduino This project is a datalogger to check the capacity of 18650 batteries by determining if they are in good condition or they must be discarded. The data that is logged …