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Compact， Easy to Install。High Sealing Performance。High Quality Hall Effect Sensor。RoHS Compliant。Water flow sensor consists of a plastic valve body、a water rotor、and a hall-effect sensor. When water flows through the rotor、rotor rolls. Its

This is a rainbow-colored mini storage box. It has 14 independent cells in 7 bright colors、would be a perfect container for your tiny objects such as resistors、small screws、even your candies and daily medicine pills.。Features。Independent cells。Colorful appearance。Easy to reassemble。Specifications。Dimensions：70*170。Material：Plastic

The MTK3339 GPS Boosterpack is the ideal GPS locator for your Launchpad. The MTK3339 Model comes with <2minute gps acquisition from a hotstart. The BoosterPack also comes with a breakout header in case you do not want to use the Launchpad、but interface

Introduction：Classic Computing Shield provides all of the hardware needed to recreate classic computing systems on the Papilio DUO. Here are some existing retro computing projects that can be easily converted.。Specification：VGA Port - 4r、4g、4b、40

Sidekick is a collection of popular components for DIY projects. It is easy to create custom breadboard circuits that can interface with a development kit. This is an excellent starter kit for new electronics engineers and makers.。This kit is fully co

Strictly speaking、Booster-B24V2A5 is a dual H-bridge power driver、which integrates 24 N-Channel MOSFETs(with low Drain-Source On-Resistance、RDS(ON)<3mΩ)and various protections(reliable and flexible). It can be used for controlling the brushed DC motor、high-power LED and so on. In addition、it integrates RS485 and I2C into one connector、and they share the same user register、so it can be used via any one of the two interfaces at any time. All functions can be performed by reading or writing the user register、except for a few special operations(please refer to the corresponding communication protocols for details)、which is similar to the MCU operation.。Features：It integrates various protections(Under-Voltage、Over-Voltage、Over-Temperature、Over-Current、Out-Of-Control and Power-Reverse). The response-time of the Over-Current protection can be flexibly set and performed by hardware(comparator)、which makes the protection more timely and reliable.。There are 18 control modes for different applications(see below).。It integrates a stable and high-efficiency RS485、and the baud rate can be detected automatically. There is no instruction packet loss when the baud rate is not higher than 28800bps、otherwise the first instruction packet will be discarded. Furthermore、it is recommended to send the sync bytes(0xff 0xff 0xff 0xff)first when the baud rate is higher than 28800bps.。It integrates a stable and high-efficiency I2C.。Specification：Supply Voltage：DC 6 ～ 24V。Continuous Current：2 5A / 1 10A(Just limited by D-Sub connector、210A / 115A for mosfets and sampling resistors.)。Baudrate Range：1200 ～ 115200bps。I2C Speed：100KHz。Size：54.5mm 50mm 30.5mm(LWH)。We have adapters for this controller：GDA-HLB1，GDA-HLU1 and GDD-FAN.

Features：One of the most frequently used parts in Makeblock platform、Compatible with most makeblock motion and Structure components.。Made from 6061 aluminum extrusion、anodized surface. Excellent strength and twist resistance.。With holes on 16mm increments、can be drilled for 4mm hardware.。Threaded slot enables easy and flexible connection.。Cross-sectional area 8x8mm.。Total number of beams is 10.。Note：。We changed the version of Beam0808、the new version Beams are 8mm shorter than the old version Beams.。Part List：2x Beam 0808-80。2x Beam 0808-128。2x Beam 0808-144。2x Beam 0808-160。2x Beam 0808-192

A clear laser-cut acrylic project case kit that fits DP7070 square PCBs(70mmx70mm). Protect your project from electrical shorts and fingers、but keep it accessible for hacking and showing off. Sick of Beige basic case v1 is designed to be simple、cheap、and easy to assemble. The project PCB is sandwiched between two laser cut acrylic sheets、and the whole assembly is held together with aluminum screws and standoffs.。Sick of Beige PCB templates and clear enclosures make it super easy to design your project for a case. Drop a standard PCB footprint on your schematic、and then route on the board template. The board shape、size、limitations、and many connector placements are already taken care of.。This case fits DP7070(70mmx70mm PCB size)compatible PCBs.

Atom Node is a IoT platform、which intellectualize its surroundings. Atom Node can support serveral Grove sensors and actustors to gather physical data and actuat certain action. Atom Node needs to be configured before putting into use. After configration、several modules can gather and transmit data wirelessly through RFBee. Besides、with a rotating shaft and universal framework、the pretty、easy open-closed and pragmatic shell can satisfy customer's applications in different working environments.。A Sensor is an electronic object that gets physical values from the environment. For instance、a Grove-Temperature Sensor reads temperature data and transports it to Node.。An Actuator makes some certain actions. As an example、Grove-LED will blink when a HIGH level is sent to it.。Features。Mobile devices/Apps centered configure。Open Source。Flexible wireless networks topology from Ad-hoc to mesh。Built-in battery。A variety of Indicators、Easy to distinguish the work state。Skin-Skeleton-Gut philosophy

Espruino Pico is a tiny microcontroller board that runs JavaScript(it doesn't need to be plugged into a computer)、making it easier than ever to control electronics in the real world. You can program it with nothing but a serial terminal program、but there's also an IDE that runs in the Chrome Web browser. It's got a syntax highlighted editor as well as a graphical programming language.。Once you have uploaded code、you can inspect and change variables(including functions)while your program is running. If you make something with an Espruino Pico and need to change it a year later、your original code is still there waiting for you!。This is the pinned version of the board、which fits perfectly into breadboard. If you need without pre-soldered pins、please visit Espruino Pico(unpinned).。Features：33mm×15mm(1.3×0.6 inch)。22 GPIO pins：9 Analogs inputs、21 PWM、2 Serial、3 SPI、3 I2C。All GPIO is 5 volt tolerant(Arduino compatible)。2 rows of 9 0.1" pins、with a third 0.05" row of 8 pins on the end。On-board USB Type A connector。Two on-board LEDs and one button.。STM32F401CDU6 CPU - ARM Cortex M4、384kb flash、96kb RAM。On-board 3.3v 250mA voltage regulator、accepts voltages from 3.5v to 16v。Current draw in sleep：< 0.05mA - over 2.5 years on a 2500mAh battery。On-board FET can be used to drive high-current outputs。Part List：Espruino Pico(pinned)x 1

The new USB Tester Backback 2.0 brings many new features to the already very useful tool. We have worked hard over the recent months to bring most of the many requested features.。The USB Tester makes it easy to monitor the current and voltage of any USB device. It is inserted inline between your USB device and your power source or computer. This allows you to make sure you are getting a true 5V and to read how much power your projectdevice is using. For example、you can check which charger/cable allows your phone to charge the fastest. The base can be used with a Digital Multi Meter or with the Backpack、you can see the readout directly on the display. The default mode shows a graph of current usage、with the button cycling through the different modes.。The OLED Backpack can connect to a computer either using the Java app or the wizkers.io Chrome app. Both can graph and log the data which can be export as a CSV file. Wizkers is easier to setup and can handle firmware updates.。Features：Micro USB。Button Location on the front left。128x64 OLED Display。Voltage monitoring of the USB Data lines。Easier access to almost all the extra GPIO's。Separated voltage test points(Easier to attach test clips and avoid misplacing jumper)。Standard Dual Banana spacing 0.75in。Standard test probe sized test points。Firmware Features：Peaks。mWh and mAh tracking。Bar Graph of volts、watts and current。JSON for serial communications。Java App：Uses JSON over serial。Save as CSV。View max、min、avg on each graph。Specification：OLED。.96in。128x64。SPI。Supply：4.5v-5.5v。I/O：3.2v-5.5。8 Pin。PCB：26.7mm×25.4mm。Monochrome(WHITE)。Display Mode：Passive Matrix。Drive Duty：1/64 Duty。Active Area：21.744×10.864(mm)。Pixel Size：0.154×0.154(mm)。Pixel Pitch：0.17×0.17(mm)。2.0mm pitch(Might be breadboardable if you bend the pins out)(same pitch as Xbee)

The Audio Hacker shield for Arduino allows you to perform realtime digital signal processing. Record audio samples into memory and play them back. Mix samples、manipulate audio、build audio effects、or synthesize entirely new sounds. All with Arduino programming!。High quality 12-bit ADC and 12-bit DAC. Realtime ADC sampling and output to DAC at 44.1 kHz.。256K SRAM for recording/playback of audio samples. No SD card is needed! High-speed SRAM allows fast access to audio data for realtime processing and mixing.。Record about 9 seconds of high quality audio at 22 kHz with 12-bit resolution to SRAM. Much longer samples can be recorded at lower frequency and/or resolution. See memory capacity below.。TS922IN op-amp provides high current output and up to 100X gain preamp for weak inputs.。Two onboard buttons for input、bypass switch、volume knob.。Connection for 3V battery backup to retain samples in memory.。Compatible with Arduino Uno、Duemilanove、Mega、and Leonardo. Uses digital pins 5-13.。Easy to assemble kit! Available assembled in limited quantities.。Features：Audio input and output 3.5mm stereo jacks and solder pads. The stereo input is converted to mono、and the output is always mono. Solder pads are provided for input and output in case you want to use different types of connectors。The bypass switch allows you to hear the input signal(after it has been converted to mono)on the output. This switch allows you to compare the original signal with the processed output of the Audio Hacker.。Small volume knob for the output level of the processed signal。Two buttons provided for user input. These are connected to digital pins 5 and 6.。Preamp gain allows you to amplify weak input signals. For inputs from an MP3 music player(e.g. iPod)or computer、this potentiometer should be set to its lowest level(no gain).。Battery connection allows you to keep your audio samples in non-volatile memory when power is disconnected. A simple 3V coin cell battery(e.g. CR2032)is sufficient to retain the memory contents. See this project for more details.