## 4 Digital 7segment Display ##
This article is the use of Arduino MEGA 2560 board to drive some of the color LED digital tube.All of the content is edit in the edit in the easyeda.com
Usually in the production , the 4-digital 7 segment LED display is a lot of advantages, in the network, we can see many users in the difficult search related projects. Here we come to design a Arduino 7 dig...
## Arduino drives Angle of tilt switch ##
Free shipping for SW-520D ball switch Angle of tilt switch, switch Angle sensor,tilt sensor
![Tilt angle sensor module]
1, the use of highly sensitive angle switch SW-520D as a sensor
2, the comparator output signal clean, good waveform, driving ability, than 15mA
3, the working voltage 5V
4, the output format: Digital switchi...
## 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...
## Water Sensor to Arduino ##
![enter image description here]
When a drop of water onto the sensor, digital output port raindrop sensor module can output low, the analog output can change the output voltage based on the number of raindrops, the more raindrops, the lower voltage. When the sensor detects water, the digital output port high, the analog output voltage of the power supply voltage...
## 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...