## UltraSonic Distance Measurement ##
## Small low-cost ultrasonic distance measurement modules ##
Small low-cost ultrasonic distance measurement modules like this: SRF-06 are an effective way to sense the presence of nearby objects and the distance to them. Often Robots use these to sense objects or collisions and take appropriate action.
Here's how these modules work:
They have two t...
## Blinking a Lamp on and off ##
we have the relay clicking on and off. Inside, the COM terminal is connected to the NO (Normally Open) terminal when the relay is on. So all we have to do is use that switch to turn the lamp on and off.
![Blinking a Lamp on and off]
We're going to use a low-voltage lamp from IKEA, to make things a little safer. IF you wire this type
Apesar do nome estranho, o projeto possui as funcionalidades do título.
A primeira é um "**caçador de vampiros**" de energia (baseado no projeto TOMADA INTELIGENTE do Br-Arduino.org com uso do Attiny85), que consiste em eliminar o consumo de energia dos equipamentos em espera (stand by). Diferente do Tomada Inteligente, este não faz uso de uma régua, mas sim de uma caixa que seria o "interrupt...
**EOG Arduino shield**
It is an electrical representation of the eye ball movement. Assuming that the resting potential is constant, the recorded potential is a measure of the eye's position, the eye acts as a dipole in which the anterior pole is positive and the posterior pole is negative. Accordingly, we have horizontal EOG (HEOG) where the...
**ECG Arduino shield**
It is the electrical activities of the muscle and the nerve cells that control it (motor neurons). Motor neurons transmit electrical signals that cause muscles to contract. The signal is shown in figure (3), when muscles are active, they produce an electrical current, this current is usually proportional to the level of...
This circuit powers an arm-mounted circular-saw that I developed for a mad doctor costume this last Halloween. Along with the spinning foam blade it also features a smoking effect, lights, and sound. It's all coordinated by an Arduino Nano mounted in this PCB.
**WARNING:** This board layout still has a bug in it. Two of the pins on the FQP30N06L mosfets are flipped. I let EasyEDA know about the...
To get rid of the many internal wires inside my grbl /driver switch box i decided to develop a complete solution with an arduino nano and optocouplers like shown on https://github.com/gnea/grbl/wiki/Wiring-Limit-Switches.
I want give the OK's a chance because of bad experiences with alarm triggers due electrical static or magnetism from other machines.
Also i plan to make a power distribution bo...
A game system with a hexagonal screen and a circle of buttons controlled by an arduino pro mini.
More info at: http://johan.vandegriff.net/hexagame/
Newer design: https://easyeda.com/jjvan/HexaGame_v2_0-0fb707684ff844ab90d4a03ce570e539