More ideas from GVD
Hackaday:  DVD laser diode used to build a laser engraver

[Johannes] has been reading Hackaday for years but this is the first project he& tipped us off about. It& a laser engraver built from a DVD burner diode (translated). It turned out so well we wonder.

homemade angle in cnc machine - Google Search:

Homemade, hobby CNC computer-controlled router with step-by-step details of my build, featuring detailed drawings and lots of photos.

How to Choose an Inverter

How to Choose an Inverter for Off-Grid Power Systems - The Off Grid Tiny House

2 led flashing circuit schematic

This is a simple flashing led circuit with 2 leds and 2 NPN transistors.

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 . It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 . It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

A graphic showing Bernoulli's equations which relates the velocity and static pressure of a flow.

n fluid dynamics, Bernoulli's principle states that for an inviscid flow of a nonconducting fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. Curtesy of NASA

Bernouilli Principle and Equation -Pressure

Steady-state flow caveat: While the Bernoulli equation is stated in terms of universally valid ideas like conservation of energy and the ideas of pressure, . Visit page View image

Arduino Sketch for a Retro Analogue Meter Graphic on a Modern TFT Display

Arduino Sketch for a Retro Analogue Meter Graphic on a Modern TFT Display