The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega 2560 board is compatible with most shields designed for the Uno and the former boards Duemilanove or Diecimila.

An Optocoupler, is an electronic component that interconnects two separate electrical circuits by means of a light sensitive optical interface. There is a is a light emitting diode with a phototransistor inside the optocouplers, both of them are isolated from the external environment of the optocoupler; This means that the internal phototransistor can only receive light emitted by the internal light emitting diode. The phototransistor base is stimulated by light received from a light emitting diode and can pass current according to it.

Opto-couplers are used where two circuits need to be separated and isolated. For example, when we want the control circuit (for example, processors) to be separate from the power circuit (for example, relays, motors, etc.) we use optocoupler to remove the power circuit noise on control circuit.

specification

• The use of the industry's top quality optocoupler isolation, strong anti-interference ability, stable performance
• 5V 16-Channel Relay interface board, and each one needs 15-20mA Driver Current
• 1-16 road can be any full on / off, or any road.
• Equiped with high-current relay, AC250V 10A ; DC30V 10A
• Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
• Indication LED’s for Relay output status
• Board size: 188x90x20mm

Deurmagneethouder 48FME051 voor belasting van 50 kg voor branddeuren. Te installeren op de wand of op de vloer, met optionele beugel (art. 48FMA03). Laat automatisch los in geval van brand. Inclusief handmatige ontgrendelknop. Aansluiting via klem, door een diode beschermd tegen polariteitsinversie en beperkingsweerstand. Bevestigingsplaat met snelkoppeling. Behuizing in vernikkeld ijzer voor maximale corrosiebestendigheid. Sokkel van met glasvezel versterkt thermoplast. Voeding 24Vcc. Verbruik 50mA. Lage verbruiksmodus. Gecertificeerd volgens EN 1155.

Magneetcontact voor opbouw, kunststof behuizing, klemaansluitingen, C-NC-NO. Afmetingen: (B x H x D) 33x63x12mm.

A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process. Buttons are typically made out of hard material, usually plastic or metal.[1] The surface is usually flat or shaped to accommodate the human finger or hand, so as to be easily depressed or pushed. Buttons are most often biased switches, although many un-biased buttons (due to their physical nature) still require a spring to return to their un-pushed state. Terms for the "pushing" of a button include pressing, depressing, mashing, slapping, hitting, and punching.

Een wisselstroommotor is een elektromotor die wordt aangesloten op een wisselspanning. Daarbij wordt onderscheid gemaakt in draaistroommotoren, die gevoed worden door een driefasestroom en werken met een draaiveld, en eenfasemotoren, die gevoed worden door een eenfasestroom. Ook bij de eenfasemotoren zijn er die werken met een draaiveld en daarom net als de draaistroommotoren draaiveldmotoren genoemd worden. Bij de draaistroommotoren wordt het draaiveld gerealiseerd door de driefasige elektrische spanning en/of stroom te verschuiven over 120° op een driefasige wikkeling. Bij enkelfasige wisselstroommotoren wordt het draaiveld opgewekt in de motor zelf, vaak in combinatie met spoelen of condensatoren.

A motor protection circuit breaker, or MPCB, is an electromechanical device that performs three important functions upstream of an electric motor:

• isolation,
• motor protection against overload and short circuit,
• control of the motor (on/off).

In the event of overload or short circuits, the MPCB automatically disconnects the circuit. It has internal contacts that connect the power supply line to the load. An internal coil detects the short-circuit currents (high or very high current values), while a heat-sensitive element, welded on the bimetal, detects overcurrents (current values slightly higher than the nominal value) which may damage the motor. In the event of overcurrents, the coil or the bimetal determine the opening of the contacts.

• Interface: I2C
• I2C Address: 0x27
• Pin Definition: VCC、GND、SDA、SCL
• Back lit (Green with white char color)
• Supply voltage: 5V
• Size: 27.7mm×42.6mm
• Contrast Adjust: Through Potentiometer
• Only employ two I/O interface