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PROP-SHIELD Prop Shield With Motion Sensors for Teensy 3.2 and Teensy-LC
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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AM-140 Square Wave Generator with adjustable ratio and frequency
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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AM-135 NE555 Frequency Adjustable Pulse Generator Module
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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AM-130 Bi-directional I2C Logic level converter
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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DFR0374 LCD Keypad Shield V2.0 For Arduino
US$24.02
This product includes a 2x16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD and Analog Pin 0 is used to read the work status of five pushbuttons. This product ensures consumer's convience especially when computer is not available. Menu selection and monitoring can be easily achieved by this product even for gaming, that means you can test or debug your project by displaying information on the LCD display. This function makes sure that the project runs well.
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DFR0382 LED Keypad Shield For Arduino
US$13.93
The LED Keypad Shield is an Arduino expansion shield with a 4 digit 8 segment digital tube display (common cathode). It has 5 buttons that can be used as menu select buttons or control buttons, using I2C to drive the digital tube for an easy user experience.
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DRI0035 TMC260 Stepper Motor Driver Shield
US$50.00
This is a stepper motor driver introduced by DFRobot for those projects require powerful stepper motors, such as a pair of automatic curtains, an XY Plotter. This shield allows Arduino drive stepper motors (up to 2A per motor coil, 40V max). This stepper motor drive shied adoptes a TMC260 chip which is the first energy efficient high precision microstepping driver IC for bipolar stepper motors with integrated power MOSFETs.
Delivery within 2-3 weeks
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2926-ADA Terminal Block Breakout FeatherWing Kit for all Feather Boards
US$26.17
The Terminal Block Breakout FeatherWing kit is like the Golden Eagle of prototyping FeatherWings (eg. majestic, powerful, good-looking). To start, you get a nice prototyping area underneath your Feather, with extra pads for ground, 3.3V and SDA/SCL. Not one to stop there, we expanded the PCB out to 2" x 2.5" with 3.5mm pitch terminal blocks down each side. There's also four mounting holes so you can attach the breakout to your enclosure or project.
Delivery within 2-3 weeks
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3170-POLOLU USB AVR Programmer v2
US$13.30
This in-system programmer can be used to program AVR microcontrollers and AVR-based controller boards, such as our Orangutan robot controllers and the 3pi robot. The programmer emulates an STK500 on a virtual serial port, making it compatible with standard AVR programming software, and it supports devices running at either 3.3 V or 5 V.
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WAVE-150 USB AVRISP XPII, AVR Programmer
US$53.19
AVR ISP Programmer, compatible with AT AVRISP mkII from ATMEL. A professional In-System Programmer. Supports all AVR devices with ISP or PDI interface, including XMEGA. Supports AVR Studio 4/5/6 or higher version (delivered with firmware for AVR Studio 5, can be updated to support other AVR Studio versions).
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WAVE-5989 USB Blaster V2, ALTERA Programmers & Debuggers
US$45.45

The USB Blaster Download Cable interfaces a USB port on a host computer to an Altera® FPGA mounted on a printed circuit board. The cable sends configuration data from the PC to a standard 10-pin header connected to the FPGA. You can use the USB Blaster cable to iteratively download configuration data to a system during prototyping or to program data into the system during production.

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WAVE-147 CC Debugger, LPC Debuggers & Programmers
US$46.19
The CC Debugger is primarily used for debugging and programming the flash on CCxxxx 8051-based System-on-Chip (SoC) devices from Texas Instruments. CC Debugger also supports CCxxxx RF transceivers. In addition, CC Debugger is used for configuring the CC85xx devices with PurePath Wireless Configurator. Performance: Compatible with the original TI CC Debugger. Supported Operating Systems: Windows 2000, Windows xp sp2/sp3, Windows Vista 32bit, Windows 7 32bit. Target voltage: 1.2V～3.6V. Capable of powering the target board from the debugger. Operating temperature: 0℃～85℃.
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1967P Machine Hex Nut: M2.5 (25-pack)
US$1.88
This M2.5 hex nut is made from steel, is zinc-plated, and comes in packs of 25.
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2991-ADA USB Mini Hub with Power Switch - OTG Micro-USB
US$7.73
This mini USB hub has four USB 2.0 ports each with a max total transmission speed up to 480 MBps. All four ports are powered thru the USB micro-B cable. There's also a single on-off switch that controls the four USB ports.
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2998-ADA USB Mini Hub with Power Switch
US$8.67
This mini USB hub has four USB 2.0 ports each with a max total transmission speed up to 480 MBps. All four ports are powered thru the USB micro-B cable. There's also a single on-off switch that controls the four USB ports. There is a port for an external power supply but its connected directly to the 5V line so if you need to externally power, we recommend prying open the case and cutting the red 5V line from the USB connection.
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