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Extensions
Anything which fits for your Arduino, but no shields (soldering may be required)
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Adafruit Pro Trinket LiIon/LiPoly Backpack Add-On
This little PCB sits on top of the Pro Trinket and allows a LiPoly/LiIon battery to plug in. When the Pro Trinket USB port is powered, the battery is recharged automatically. Learn More -
Adafruit PN532 NFC/RFID controller breakout board - v1.3
The PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and 'act' like a NFC tag. Learn More -
Adafruit NeoPixel NeoMatrix 8x8 - 64 RGB LED Pixel Matrix
Put on your sunglasses before wiring up this LED matrix - 64 eye-blistering RGB LEDs adorn the NeoMatrix for a blast of configurable color. Learn More -
Adafruit I2C Non-Volatile FRAM Breakout - 256Kbit / 32KByte
This particular FRAM chip has 256 Kbits (32 KBytes) of storage, interfaces using I2C, and can run at up to 1MHz I2C rates. Learn More -
Adafruit ATWINC1500 WiFi Breakout w/uFL Connector
Connect your Arduino to the Internet with this fine new FCC-certified WiFi module from Atmel Learn More -
Adafruit 3.5" TFT 320x480 + Touchscreen w/MicroSD
This TFT display is big (3.5" diagonal) bright (6 white-LED backlight) and colorful! Learn More -
Adafruit 1.3" 240x240 Wide Angle TFT LCD Display with MicroSD - ST7789
It's so small only 1.3" diagonal but has a high density 260 ppi, 240x240 pixel display with full-angle viewing. Learn More
Extensions
Minimal Price: 7.90