Description: This is the very popular 2.4GHz XBee module from Digi. These modules take the 802.15.4 stack (the basis for Zigbee) and wrap it into a simple to use serial command set. These modules allow a very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point networks are supported.
Not sure which XBee module or accessory is right for you? Check out our XBee Buying Guide!
Note: If you are using these outside of the United States, please check with your local laws regarding radio communication.
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I bought this after first purchasing the on chip antenna model. I later found that if you have a PCB with a ground plane under the on chip antenna, it would cause problems. It definitely did! Rather than redesign my PCB, I switched to the wire antenna and it works great.
One thing to note, the PWM output on these has a period of 15KHz which is too fast for some microcontrollers to interrupt upon accurately. It will cause a stack overflow at the least. However, you can use a resistor and capacitor filter on the PWM output to make it a stable linear analog voltage for your signal. I use this to control an R2D2 using an analog thumbstick without any issue.