Для хобби, творчества и дома

was widely used in motor speed detection, pulse count, the position limit, etc. Features:
Groove type optical coupling sensor
the output state light, lamp output level, the output low level light.
covered, output high level,Without sunscreen, the output low level.
the comparator output signal is clean, good waveform, driving ability is strong, for more than 15 ma.
has a fixed bolt hole, convenient installation Specification:
- Groove width 10 mm.
- the working voltage of 3.3 V to 5 V
- output form: digital switch output (0 and 1)
- PCB size: 2.3 cmx2cm
- use the LM393 wide voltage comparator <<

тока с напряжением от 3 до 30V. Имеет выходной порт 5V DC для снабжения SCM системы и поддерживает 3,3 MCU, что удобно для управления скоростью и направлением вращения двигателей. Также, доступен контроль 2 фаз шагового двигателя. Характеристики: - Чип: L298N double-H Bridge - Клеммы Vms: 5V-35V - Max. ток: 2A на канал - Входные уровни: Высокий TTL 4.5-5,5В, Низкий TTL:0 - Max. потребление: 20W - Другие функции: Индикатор управления, индикатор питания. <<

high voltage, high current, 4-channel driver.
Basically this means using this chip you can use DC motors and power supplies of up to 25 Volts, thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what's known as a type of H-Bridge.
The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.
2 interface for 5V Servo connected to the Arduino's high-resolution dedicated timer - no jitter.
Can drive 4 DC motors or 2 stepper motors or 2 Servo.
Up to 4 bi-directional DC motors with individual 8-bit speed selection.
Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 25V DC.
Pull down resistors keep motors disabled during power-up.
reset button.
2 external terminal power interface, for seperate logic/motor supplies.
Tested compatible for Arduino Mega, Diecimila & Duemilanove. <<

are sophisticated power control alternatives to bulky mechanical switches. The main function is pushbutton-based latching power control, where one push turns on power and another push turns it off. Additional control inputs allow advanced applications such as automatic shutdown by the device being powered. This low-voltage (LV) version operates from 2.2 V to 20 V and can deliver continuous currents up to around 6 A. The Pololu Pushbutton Power Switch is a compact, solid-state power switch that features built-in reverse-voltage protection and is controlled by a momentary pushbutton: one push turns on power and another push turns it off. This is a patented design initially created for use in our own products as an alternative to bulky mechanical switches. Because the switched current does not flow through the mechanical switch, a large variety of small, low-power switches can be used to control a substantial amount of power. The use of momentary switches also allows multiple switches to be used in parallel to control the power to one load. The board has a small pushbutton already installed and offers convenient points for connecting external pushbutton or tactile switches in parallel. It also offers several alternate pushbutton connection options that result in push-on-only or push-off-only operation, and additional inputs enable further power control options like allowing the load to turn off its own power, which can be beneficial when used with battery chemistries sensitive to over-discharging. Block diagram of Pushbutton Power Switch with Reverse Voltage Protection.
The switch and control inputs control the state of a latching circuit that in turn controls a pair of power MOSFETs through which the main current flows. Benefits and limitations
The Pololu Pushbutton Power Switch works well in its intended application as a DC power switch for small robots, but because it is fundamentally different from a mechanical power switch, the benefits and drawbacks of the components must be fully considered. Benefits over mechanical switches: Compact size
Reverse-voltage protection
Allows multiple (parallel) switches for improved user interface
Better turn-on characteristics than a bouncing mechanical switch
Limited LC spikes for low-resistance loads
Allows self-shutoff (OFF input)
Allows external digital device to control the power state (ON and CTRL inputs)
Breadboard and perfboard compatible (0.1?-pitch)
Drawbacks compared to mechanical switches: Switch is one-directional (power applied to VOUT cannot be switched to VIN)
Limited operating voltage range
Switch can lose its state when power is disconnected (the switch typically defaults to being off when power is first applied, but it can default to being on near the upper end of the operating range)
Switches DC only (does not maintain state through power disruptions or excessive noise)
No complete isolation in off state. - Absolute max voltage: 20 V
- Recommended operating voltage: 2.2 V to 16 V
- MOSFET combined on resistance (max) 26 m? @ 1.8 V 16 m? @ 4.5 V - Continuous current at 55°C 3.0 A
- Continuous current at 150°C 6.0 A
- Maximum current ~210 ?A/V
- Current consumption in on state ~210 ?A/V
- Current consumption in off state ~0.01 ?A
- LED color red
- Size 0.6? ? 0.7? ? 0.12?
- Weight 0.6 g <<

4 различных щита одновременно, при этом не конфликтующие между собой. Все это делает ваш проект компактным и функциональным. Применение:
- 3D печать
- <<

(плата рычажного переключателя) Описание Механический концевой выключатель (endstop) на плате с отверстиями для крепления Вес брутто 8.67 Транспортная упаковка: размер/кол-во 48*31.5*27/300 <<

ДЛЯ изготовления сложных составных 3D моделей. В КОМПЛЕКТЕ ПРИНТЕР, КАБЕЛЬ ПИТАНИЯ,КАБЕЛЬ USB, КАТУШКА С ПЛАСТИКОМ, ДЕРЖАТЕЛЬ КАТУШКИ, КАРТА ПАМЯТИ, НАБОР ИНСТРУМЕНТОВ, РУКОВОДСТВО. MBot принтер, разработанный и изготовленный Magicfirm LLC, является одним из самых доступных и современных домашних 3D принтеров на рынке сегодня. Он может похвастаться функциями, которые не доступны в никаких других в настоящее время не в этом ценовом диапазоне. Принтер включают в себя два экструдера (2-цветная печать) для быстрой и точной 3D печати с возможностью создавать модели объемом до 200x200x200mm. Особенности: - Двойной экструдер - ЖК экран - Поддержка SD карт для печати. <<

модуля Нормализатор сигнала термопары К-типа, max6675 (Trema-модуль) Описание Комплект модуля датчика температуры MAX6675 с термопарой К-типа Интерфейс SPI Диапазон измерений температур - 200+1300 С Точность измерения 1,5 С Разрешение 0,25 С Потребляемый ток, мА 50 Напряжение питания, В 5 Температура хранения, C -50+150 Комплектность 1) датчик 1PCS*K, 2) модуль MAX6675 Высота, мм 13 Ширина, мм 15 Глубина, мм 25 Вес, г модуля - 4 Вес брутто 26.50 Транспортная упаковка: размер/кол-во 42*28*23.5/200 <<

отверстий позволяют надежно закрепить мотор на скобе, а три отверстия с резьбой М3 в основании предназначены для установки скобы на шасси. В комплект входит 9 винтов М3. Расстояние между центрами отверстий в основании скобы 14.8 мм.This machined aluminum gearmotor bracket lets you securely mount Pololu_s 37D mm metal gearmotors to your project. The six holes on the bracket face line up with the six mounting holes on the 37D gearbox, and the bracket features three tapped M3 holes on the bottom that can be used to mount it to a surface. The bracket includes nine M3 screws: three for mounting the bracket to a surface and six for mounting it to the gearmotor.This light and sturdy bracket is specifically designed for Pololu_s 37D mm metal gearmotors. Nine 8 mm M3 screws are included for securing the motor to the bracket and the bracket to a surface. The bracket features three tapped M3 holes along the bottom (spaced 14.8 mm, or 0.58?, apart) that are used to mount it to another object.We also carry a stamped L-bracket for our 37D mm gearmotors that provides alternate mounting options, but the stamped bracket is not quite as sturdy as this machined bracket and can bend under heavy load. <<

Частота дискретизации: 500 МС / с <<

крепления и ремешок с чекой. Оранжевый цвет. <<

L298N для мотора постоянного тока Описание Модуль драйвера двигателя DC 4-х канальный Чип L298N Вес брутто 89.00 Транспортная упаковка: размер/кол-во 48*31.5*22/50 <<

датчик температуры. Описание Модуль датчика температуры KY-028 Вес брутто 5.50 Транспортная упаковка: размер/кол-во 42*28*18.5/300 <<

магнитного поля. Модуль KY-025 для Ардуино. Описание Модуль датчика магнитного поля KY-025 (геркон внешний) Вес брутто 8.00 Транспортная упаковка: размер/кол-во 48*31.5*27/300 <<

для Arduino Описание Датчик магнитного поля KY-021 (геркон на плате) Вес брутто 2.07 Транспортная упаковка: размер/кол-во 48*31.5*22/300 <<