How to DIM LED with Arduino & Triac

Zero-Cross & Triac Optically Isolated Switch "Tail": https://www.powerswitchtail.com/pssr-zc-tail arduino: https://amzn.to/2P12JaL RealTimeClock (RTC): https://amzn.to/2NTKsjg 15W Dimmable LED https://amzn.to/2OqlHL0 CR2032 battery for RTC: https://amzn.to/2Ov8elf sourcecode: https://github.com/curiousinventor/AC-triac-arduino-led-dimmer

Course on Bitcoin, Blockchain, Decentralization

Our new course on Bitcoin, Blockchain and Decentralized technology gives a crash course on Bitcoin and many other blockchain projects, like Ethereum, MakerDao, IPFS, SlockIt, the DAO, Zerocash, and more. There are demos on how to acquire, store and1

SMS to Cheap Scrolling LED using Arduino USB Host Shield and Android App

This project shows how to send SMS text messages to a cheap scrolling LED display via an Android app and arduino with USB host shield. The project was originally inspired by a friend wanting to make a "sexting themed" costume, with a scrolling LED display of live texts sent from1

The Essence of How Bitcoin Works

A brief intro to the main ideas behind How Bitcoin Works, including how money is transferred, who keeps track of it, and how the whole thing is secured.

SMT Stencil Review, including BGA Reballing

A review of SMT stencils from BEST, Inc. 10% off coupon: 'Curious'

How Bitcoin Works in 5 Minutes

A short introduction to how Bitcoin Works. Written version:https://www.imponderablethings.com/2014/04/how-bitcoin-works-in-5-minutes.html

RPi Spectrum Analyzer Display with LED Strip

A python-based real-time spectrum analyzer. Plays MP3s and does FFTs in real time using code from the LightShow Pi project and Numpy. Full code and instructions at instructables.

Augmented Reality Circuit Building Guide

An iPad app that provides augmented reality steps for building a circuit on a bread board. Graphics are overlayed on the actual breadboard to show you exactly where to put parts, and provide extra information, like values, tolerances, and voltages.

How Bitcoin Works Under the Hood

A somewhat technical, but concise explanation of how Bitcoin works.

How to Desolder Through-Hole Joints

https://www.youtube.com/watch?v=Z38WsZFmq8E This video demonstrates the use of solder wick (braid), a solder sucker (desoldering pump), and desoldering gun. It explains why some joints are hard to desolder: large ground planes or components, small holes, low quality pcbs. Finally, some alternative methods are shown, including cutting the leads, pulling one lead1