Development Boards

US$27.99
This Arduino Introductory Kit contains the basic components, all explained by an excellent 35 page color manual,  required to initiate you into the wonderful world of Arduino. This kit does not contain an Arduino UNO.
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US$60.13
The Raspberry Pi Sense HAT V2 is the perfect product to learn about programming and how we interact with the world around us. With its full array of sensors, the Sense HAT was originally developed for use on the International Space Station, as part of the educational Astro Pi programme run by the Raspberry Pi Foundation in partnership with the European Space Agency.
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US$41.93
The GPS Expansion for the Onion Omega is a USB-based expansion that allows your Omega to pinpoint its location using both GPS as well as China’s Beidou satellite positioning systems. It comes with an on-board GPS antenna as well as a built-in u.FL connector to attach your own antenna. Technical Details: Accuracy: 1.8m, Search channels: 66, Tracking channels: 22, Sensitivity: -165 dBM, Update rate: 10 Hz.
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US$72.57

This is an action-packed and low-cost Arduino Kit. It includes all the components required to not only get you started, but also to allow you to deep-dive into more advanced components like RFIDs. It does not include an instruction manual. However at this point Arduino is so popular that a Google search on how to use any component will result in many tutorials.

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US$19.59
Makeblock Me Dual DC Motor Driver is the improvement version of Me Motor Driver V2.1. With on board RJ25 ports, you can drive two DC motors at a constant current of 1A (2A peak). The motor driver IC on the board is TB6612, TB6612 is a high efficiency MOSFET driver, with low heat dissipation. Over current protection included to stop the driver IC burned out. 
Delivery within 2-3 weeks
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US$9.23
This convenient DB25 Female breakout board has screw terminals to allow easy wiring and monitoring of all 25 pins from a DB25 connection. Each of the pin connections are labelled by pin number.
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US$6.15
This convenient DB9 Female breakout board has screw terminals to allow easy wiring and monitoring of all 9 pins from a serial RS232 port connection. Each of the pin connections are labelled by pin number and function.
Delivery within 2-3 weeks
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US$13.36
This is 12 meters of smooth conductive thread spun from stainless steel fiber and wound on a plastic bobbin. Use it to sew up all of your e-textile projects. This small bobbin is a great way to get into wearable electronics without the upfront cost of buying an entire spool of thread. Close to 40 feet of thread is enough to get a simple design stitched onto your shirt, backpack or hat.
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US$27.23
Small but powerful amplifier for a wide range of applications, for example MP3 player, melody generator, intercom, sound effects, headphones, radio receiver, PC sound card, music instrument...
Delivery within 2-3 weeks
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US$13.92
This is the Latching Mini Relay FeatherWing. It gives you power to control, and control over power. Put simply, you can now turn on and off lamps, fans, solenoids, and other small appliances that run on up to 250VAC or DC power using any Feather board.
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US$9.16
It is a 8 channel or 8-bit logic level converter that is great for interfacing sensors or 3.3v logic components with 5v logic level microcontrollers. This unit will do the level shifting required to allow theses device to communicate without burning out each other. On the right side Vb is the input voltage reference of 5v, whereas Va and OE is the input reference of 3.3v.
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US$27.93

The Prop Shield is meant for making interactive light and sound effects on small handheld props and wearable costumes. Motion Sensors: Allows motion interactive light & sound. Audio Amplifier: Clear quality audio output to a small speaker. Fast LED Driver: Drive APA102 / Dotstar LEDs for colorful lighting with rapid response. Flash Memory: 8 Mbyte storage for images, sound clips, and data logging.

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US$7.69
This small module uses an LM358 to output a square wave at a frequency determined small jumpers and an adjustable resistance at the end of the module, with the duty cycle adjusted by the potentiometer at the center of the module. Put in between 5 and 12V and it’ll start right away.
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US$6.15
This small module uses the good old NE555 to output a pulse at a frequency determined by an adjustable resistance at the end of the module. Put in between 5 and 12V and it’ll output a square wave. A small LED lights up to show the device is powered.
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US$2.19
This small module converts logic levels for I2C communication protocols, enabling you to attach a 3.3V module to a 5V project (or vice-versa).
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