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110/220VAC Opto-Isolated Zero Cross Detector Module for DIN Rail Carrier Mount with 3.3V or 5V Output - Ideal for Arduino, ESP32/ESP8266
TStar Aug 15,2022
This module detects the zero cross point of an AC supply and outputs a 3.3V or 5V square wave signal pulse of 1ms every time the zero point is crossed. For a 50Hz supply this pulse would be sent 100 times per second. This is ideal for micro-controller projects which require accurate synchronization with the AC supply, such as for controlling triacs to perform phase-angle control for light dimming or heater control. The AC side of the circuit is optically isolated from the DC side, providing impo...
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PokeWeather
Arnov sharma Aug 15,2022
Greetings.So here's something a bit Nerdy, A Pokémon-themed Pocket Weather Station made by using custom PCBs and 3D Printed parts.An ESP8266 Board is being used to drive the display and it was made to look like a Pokedex from the pokemon series.This Weather Station pulls data from a weather website, and OLED Screen Displays data on it.It has a Lithium battery inside so we can carry it around, to turn this device ON, we use the slide switch which is on the main circuit.This article is gonna ...
3D printing SLA Arduino
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Two Hand Multimeter With Arduino
ELECTRONOOBS Aug 13,2022
Full tutorial video: https://youtu.be/r83YSbyju8A This project is awesome, and I bet that you want one as well. This is yet the best multimeter I’ve made so far and let me tell you why. Well, first of all, is homemade, and that’s awesome, especially knowing that I’ve designed it myself. But second of all, it is very small but it has a lot of modes. It can measure voltage very precisely. The same for resistance and also capacitance. And if that is not enough, it can also ...
Arduino DIY multimeter
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DIY Sensitive Arduino IB METAL DETECTOR (coin from 25cm big object at 100+ cm)
Pavleski Aug 13,2022
  A metal detector is an instrument that detects the presence of metal nearby. This time I will show you how to make a very sensitive, but simple to build "Inductoion Balance" type of metal detector made with the help of Arduino microcontroller and several other components. The Induction Balance principle uses two coils arranged in such a way that there is virtually no inductive pick-up between them. A modulated signal is fed in to one. When metal is brought near, the electromagnetic f...
Arduino DIY metal detector
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Making a Digital Light Measuring Meter
Manoj kumar Aug 13,2022
While working on a home automation project on light, the light intensity unit- lux (lumens per square) comes to my mind. Summarizing, while light output is expressed in lumens, light intensity is measured in terms of lumens per square meter or lux. Both the units are different from each other. Let’s have a basic idea about them.Lumens (Lm) are the unit of measurement we use to quantify the amount of visible light the human eye can see. The luminous flux of a particular light source is measured i...
Arduino DIY USB
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STM32F1 blue pill EByte LoRa E32 E22 E220 shield v1.0
Mischianti Aug 12,2022
Full documentation of the PCBEByte E32 tutorialEByte E22 tutorialEByte E220 tutorialI start using STM32 microcontrollers, and I find they a superior quality. But I need some prototyping board to do my work faster.So here is a prototype board to develop the LoRa application. As usual, I use EByte modules, and this board is fully compatible with E32, E22, and E220.More information, BOM, and description on the relative article on the site.STM32F1 pinoutAs you can see in the pinout diagram, you can ...
Arduino STM32 IoT
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Real-time Smoke Detection with AI-based Sensor Fusion
Aug 12,2022
AttentionThe following project is just a DIY project and did not replace certified smoke detectors. As I'm a voluntary firefighter, please keep your home safe and use high-quality certified smoke detectors. The sensor system which is developed by this project is only an addition.BackgroundSmoke detectors save a lot of lives. For example, the number of fire victims fell by more than 48% in France from 1982 to 2012 and 56% in the UK from 1982 to 2013. These reductions can largely be linked to incr...
Arduino DIY IOT
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ILI9341 Display and LOLIN D32 Carrier Board
Arnov sharma Aug 11,2022
Greetings.So this is the Carrier Board that is basically a connection board for connecting ILI9341 Display with Wemos Lolin D32 Pro Board.The goal for preparing this project was to make a setup for connecting the display with the ESP32 board without using wires and a breadboard for preparing display-related projects.This board serves as a replacement for the breadboard setup that we do for connecting the display with ESP32 Board.This Article contains the built process of the Carrier Board along ...
DIY USB Arduino
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Raspberry Pi 3B mechanic switches shield.
Iturriaga Aug 08,2022
Building the Shield:Materials:6x 10 Ohm Resistors.6x Mechanical keyboard switches.1x Raspberry Pi 3B40x Generic pins. (Skip this part if your board has pins)Steps:1- Solder the resistors to the resistor sockets located on the sides of the shield2- Solder the Switches to the sockets3- Program the board.
Arduino DIY USB
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Raspberry Pi 4 mechanic switches shield.
Iturriaga Aug 08,2022
Building the Shield:Materials:6x 10 Ohm Resistors.6x Mechanical keyboard switches.1x Raspberry Pi 440x Generic pins. (Skip this part if your board has pins)Steps:1- Solder the resistors to the resistor sockets located on the sides of the shield2- Solder the Switches to the sockets3- Program the board.
Arduino DIY USB
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