Buy ‘arduino’ with Bitcoin Crypto-Currency – Spendabit

PiMKRHAT - Arduino MKR Adapter for Raspberry Pi

$12.69 at The Pi Hut

KKSB Arduino Giga R1 WiFi Case

$21.37 at The Pi Hut

ArduiBox MKR - Arduino MKR Prototyping DIN Rail Case (inc. 5V regulator)

$47.81 at The Pi Hut

Pololu DRV8835 Dual Motor Driver Shield for Arduino

$15.36 at The Pi Hut

KKSB Arduino UNO R4 Project Case for UNO R4 Minima and WiFi

$28.58 at The Pi Hut

RS232 Shield for Arduino

$12.82 at The Pi Hut

Gravity: 4 Channel Relay Shield for Arduino

$18.03 at The Pi Hut

Fermion: FTDI Basic Breakout 3.3/5V (Arduino Compatible)

$16.57 at The Pi Hut

KKSB Arduino UNO R4 Case

$17.36 at The Pi Hut

Gravity: Screw Shield V2 for Arduino

$9.62 at The Pi Hut

Adafruit 12 x Capacitive Touch Shield for Arduino - MPR121

$16.03 at The Pi Hut

2.8" Touch LCD Shield for Arduino

$21.90 at The Pi Hut

KKSB Case for Arduino UNO R4

$11.35 at The Pi Hut

DFRduino Leonardo with Xbee Socket (Arduino Leonardo Compatible)

$20.45 at The Pi Hut

Xbee Shield for Arduino

$5.88 at The Pi Hut

DFRduino Pro Mini V1.3 - Arduino Pro Mini Compatible - 16M5V328

$11.49 at The Pi Hut

MyoWare 2.0 Arduino Shield

$13.22 at The Pi Hut

Grove Shield for Arduino Nano v1.2

$3.74 at The Pi Hut

Adafruit Ultimate GPS Logger Shield - Includes GPS Module

$29.95 at Adafruit

Gravity: Analog CO/Combustible Gas Sensor (MQ9) For Arduino

$9.62 at The Pi Hut

BUCIER Dual-axis XY Joystick Module PS2 Game Joystick Control Lever Sensor Game Controller Sensor Board Module KY-023 for Arduino Raspberry (5pcs)

$29.99 at Newegg

Gravity: RS485 IO Expansion Shield for Arduino

$11.49 at The Pi Hut

Adafruit GPS logger shield kit

$19.50 at Adafruit

FTDI Serial TTL-232 USB Cable

$19.95 at Adafruit

Arduino Alvik

$181 at The Pi Hut