The RFduino is essentially an Arduino with a few key differences. At the size of your fingertip, it’s much smaller than Arduino and also slightly more affordable. You can run Arduino sketches on RFduino just like a regular Arduino, although you’ll need to purchase an additional USB shield in order to load other types of code onto it.
					
					
						Boards Guide
					
				
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				            Reviewed: RFduino
			Why To Buy
If you only plan on running Arduino sketches or don’t mind the required peripheral for programming, this is an affordable, miniature Arduino-compatible board.
Buy Now| Specs | |
| RFduino | By: http://rfduino.com | 
|---|---|
| Type: | Microcontroller | 
| Price: | $29 | 
| Software: | Arduino | 
| Clock Speed: | 16 MHz | 
| Processor: | 32-bit ARM Nordic Cortex-M0 | 
| I/O Pins Digital: | 7 (Software PWM) | 
| I/O Pins Analog: | None | 
| WiFi?: | Yes | 
| Video?: | No | 
| Bluetooth?: | Yes | 
| Ethernet?: | No | 
| Operating Voltage: | 2.1-3.6V | 
| Dimensions: | 0.9 x 1.514" | 
| Memory: | 128KB Flash | 
            
              
					





