Для хобби, творчества и дома

maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that the Arduino has only a few PWM outputs, and maybe those outputs are conflicting with another shield! What now? You could give up OR you could just get our handy PWM and Servo driver shield. It's just like our popular PWM/Servo Breakout but now Arduino-ready and works with any Arduino that uses shields: Uno, Leo, Mega, ADK, its all good. When we saw this chip, we quickly realized what an excellent add-on this would be. Using only two I2C pins, control 16 free-running PWM outputs! You can even stack up 62 shields to control up to 992 PWM outputs (which we would really like to see since it would be glorious and like 4 feet tall) Because I2C is a shared bus you can also connect other I2C devices and sensors to the SCL/SDA pins as long as their addresses don't conflict (this shield has address 0x40)
There's an I2C-controlled PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
It is 5V compliant, which means you can control it from a 3.3V Arduino and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
6 address select pins so you can stack up to 62 of these on a single i2c bus, a total of 992 outputs - that's a lot of servos or LEDs
Adjustable frequency PWM up to about 1.6 KHz
12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate
Configurable push-pull or open-drain output
We wrapped up this lovely chip into a shield with a couple nice extras
Terminal block for power input (or you can use the 0.1' breakouts on the side)
Reverse polarity protection on the terminal block input
Green and red power-good LEDs
3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1' so you can only stack 4 next to each other on 0.1' header
Stackable design. You'll need to pick up stacking headers and right angle 3x4 headers in order to stack on top of this shield without the servo connections getting in the way.
A spot to place a big capacitor on the V+ line (in case you need it)
220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
Solder jumpers for the 6 address select pins
A lot of extra space remaining? Let's turn it into a prototyping area. You get a 5x20 proto area for any extra wiring you'd like to add
This product comes with a fully tested and assembled shield as well as 4 pieces of 3x4 male straight header (for servo/LED plugs), a 2-pin terminal block (for power) and a stick of 0.1' header so you can plug into an Arduino. A little light soldering will be required to assemble and customize the board by attaching the desired headers but it is a 15 minute task that even a beginner can do. If you want to use right-angle 3x4 headers, we also carry a 4 pack in the shop. Servos and Arduino not included - but we do sell tons of different servos in the shop so pick up a few while you're here! Dimensions (no headers or terminal block) 2.1' x 2.7' x 0.1' (54mm x 70mm x 3mm) <<

combines everything you love about Trinket with the familiarity of the core Arduino chip, the ATmega328. It's like an Arduino Pro Mini with more pins and USB tossed in. Trinket's a year old now, and while its been great to see tons of tiny projects, sometimes you just need more pins, more FLASH, and more RAM. That's why we designed Pro Trinket, with 18 GPIO, 2 extra analog inputs, 28K of flash, and 2K of RAM. Like the Trinket, it has onboard USB bootloading support - we opted for a MicroUSB jack this time. We also added Optiboot support, so you can either program your Pro Trinket over USB or with a FTDI cable just like the Pro Mini and friends. The Pro Trinket PCB measures only 1.5' x 0.7' x 0.2' (without headers) but packs the same capability as an Arduino UNO. So it's great once you've finished up a prototype on an official Arduino UNO and want to make the project smaller. The Pro Trinket 3V uses the Atmega328P chip, which is the same core chip in the Arduino UNO/Duemilanove/Mini/etc. However, it uses 3V logic and 12MHz clock which means it's good when you want a lower-power and lower-voltage setup. Pro Trinket is programmable using the Arduino IDE as you already set up, and 95% of Arduino projects will work out of the box! Here's some things you may have to consider when adapting Arduino sketches: Pins #2 and #7 are not available (they are exclusively for USB)
The Pro Trinket 3V runs at 12MHz, this doesn't affect most projects. Only the most timing-specific libraries may be affected, check the documentation! The NeoPixel Library works fine at 12MHz.
The onboard power supply is a 3.3V regulator and it can provide 150mA output
You cannot plug shields directly into the Pro Trinket
There is no Serial-to-USB chip onboard. This is to keep the Pro Trinket small and inexpensive, you can use any FTDI cable to connect to the FTDI port for a Serial connection. The USB connection is for uploading new code only.
The bootloader on the Pro Trinket use 4KB of FLASH so the maximum sketch size is 28,672 bytes. The bootloader does not affect RAM usage.
Here's some handy specifications: ATmega328P onboad chip in QFN package running at 3.3V logic
12MHz clock rate, 28K FLASH available
USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude and/or the Arduino IDE (with a few simple config modifications).
Also has headers for an FTDI port for reprogramming
Micro-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.
On-board 3.3V power regulator with 150mA output capability and ultra-low dropout. Up to 16V input, reverse-polarity protection, thermal and current-limit protection.
Power with either USB or external output (such as a battery) - it'll automatically switch over
On-board green power LED and red pin #13 LED
Reset button for entering the bootloader or restarting the program.
Works with 99% of existing Arduino sketches (anything that doesn't use more than 28K, and doesn't require pins #2 and #7) Dimensions:
- Size: 38mm x 18mm x 2mm
- Height with MicroUSB: 4mm / 0.16'
- Weight: 2.6g <<

скоростью осуществляется двумя ШИМ сигналами. Направление вращения выбирается двумя цифровыми сигналами.
Характеристики:
Количество каналов: 2
Рабочее напряжение: 4.8 ...46 V(силовая часть)
Напряжение логики: 6 ... 12 V
Рабочий ток на канал: 2 A
Драйвер: L298N
Размеры: 47х53 мм
Название производителя: DF ROBOT - 2A Dual Motor Controller <<

SPI, разрешение 320x240, ILI9341 TFT дисплеи Транспортная упаковка: размер/кол-во 42*28*18.5/60 Вес брутто 55.00 <<

позволяет собрать датчик газа, срабатывающий на бытовой, природный, сжиженный нефтяной газ, а также на пары алкоголя. Датчик имеет световую и звуковую индикацию срабатывания, а также обладает возможностью подключения к внешней сигнализации.
Схема основана на датчике газа S1 (MQ-5). Выходное напряжение с датчика сравнивается с опорным, сформированным R10, R11 и RV1, в операционном усилителе U3. Чувствительность схемы регулируется подстроечным резистором RV1 (увеличение по часовой стрелке). При срабатывании схемы на выходе операционного усилителя формируется логический сигнал высокого уровня - загорается красный светодиод D4 и изменяется состояние триггера, собранного на элементах U2A и U2B. На элементах U2C и U2D собран генератор, периодически открывающий и закрывающий транзистор Q1.
Переключение триггера открывает транзистор Q2 и включается звуковое оповещение о протечке газа. Периодическое включение бузера SP1 будет продолжаться до момента нажатия кнопки SW1, сбрасывающей триггер в исходное состояние.
На микросхеме U1 собран импульсный стабилизатор напряжения. Для работы датчика оно должно составлять 5(В). Наличие напряжения питания индицируется свечением зелёного светодиода D3. Характеристики:
- Напряжение питания: 7...25 В,
- Ток потребления: До 160 мА. Комплект поставки:
- Плата печатная,
- Набор радиодеталей,
- Инструкция по эксплуатации. Примечание:
- Данный конструктор не рекомендуется использовать как основной сигнализатор утечки газа в местах с повышенным риском для жизни человека.
- При калибровке датчика в бытовых условиях регулярно проветривать помещение. Избегать появления искр в помещении. При эксплуатации изделия придерживайтесь правил и норм техники безопасности. <<