XBee radio transducers are RF transceiver modules operating at 2.4GHz which allow PICAXE and other devices to communicate with each other.
XBee is a registered trademarks of Digi International Inc.
XBee Radio Transducer
Schematic
PCB
Transmit via XBee
This program runs on an 18M2 fitted to an AXE210 board as an XBee transmitter. It sends and incrementing value out via XBee every second. The output can be viewed by an AXE210 receiving board connected to a terminal display.
- Code Example:
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init: high B.7 pause 100 main: serout B.7, T2400, (“Value =”, #b1,CR,LF) let b1 = b1 + 1 pause 1000 goto main
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Transmit from one PICAXE to another
This program reads an analogue input on pin C.0 and a temperature sensor connected to pin C.1 and passes them to an XBee for transmission.
- Code Example:
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init: high B.7 pause 100 main: readadc C.0,b0 readtemp C.1,b1 serout B.7, T2400, ($55,$55,b0, b1) pause 1000 goto main
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Receive transmitted data
This program receives data transmitted by a PICAXE via XBee (Example 2) and controls LEDs on output pin B.0 and B.1 depending on the received light level and temperature determined by the transmitter.
- Code Example:
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main: serin C.7, T2400, ($55,$55),b0, b1 debug test_LDR: if b0 > 40 then LDR_high LDR_low: low B.0 goto test_temp LDR_high: high B.0 test_temp: if b1 > 20 then temp_high temp_low low B.1 goto main temp_high: high B.1 goto main
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Create Module
An XBee based radio module may be connected to the generic terminal block create module. Take care to step down to the 3.3V XBee system voltage (i.e. use a 3V battery pack, not a 4.5V battery pack, on the motherboard).
Bill of Materials
Description | Code | Qty | |
---|---|---|---|
XBee radio module | XBE001 | 1 | Buy Now |
10-way 2mm header socket | CON046 | 2 | Buy Now |
Simulation
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