helloi got XBee Explorer Regulated sku: WRL-09132from Sparkfun.until now ( spent some hours..) it was impossible for me to make the communicate.When i take the same setup with the XBee Xtreme from Jdrones my XBee's talk to eachother with no problems.Where's the difference ? Does XBee Xtreme adapt the TTL Voltage ?thanks 4 an help
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If your arduino, or other MCU is a 5V logic board, you will only be able to transmit data over the serial lines.
The reason for this is that the Xbee is a 3.3V logic device, meaning that voltages over 65% of 3.3V will register as a logic 1, so if you apply 5V to the DIN pin it will register as a logic 1.
For DOUT, however, the Xbee can only put out a maximum of 3.3V. In theory, this should be ok, because 3.3 > (65% * 5), but in reality this is not the case. Due to resistive losses, your usually looking at an output closer to 2.8V or so, which will definitely NOT register as a logic 1 to the MCU.
In short, if you want to use this (8-7-09 rev) board, you'll have to get a 3.3/5V logic level converter and plug it in between the DOUT pin on the Xbee and the Rx pin on your MCU.
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Big fat note about Sparkfuns Xbee Explorer board:
If your arduino, or other MCU is a 5V logic board, you will only be able to transmit data over the serial lines.
The reason for this is that the Xbee is a 3.3V logic device, meaning that voltages over 65% of 3.3V will register as a logic 1, so if you apply 5V to the DIN pin it will register as a logic 1.
For DOUT, however, the Xbee can only put out a maximum of 3.3V. In theory, this should be ok, because 3.3 > (65% * 5), but in reality this is not the case. Due to resistive losses, your usually looking at an output closer to 2.8V or so, which will definitely NOT register as a logic 1 to the MCU.
In short, if you want to use this (8-7-09 rev) board, you'll have to get a 3.3/5V logic level converter and plug it in between the DOUT pin on the Xbee and the Rx pin on your MCU.
checked out TX/RX changed ; no contact to MP. Where is the difference to the XBee Xtreme Adapter ?
thank a lot