There is an updated version of this product available: WRL-12575
This product has some level of export control/restriction, so may be delayed when shipping outside the United States. Contact us with questions, or we will contact you after you place your order.
Description: Replacement:WRL-12575. The firmware on this Roving Networks product has been updated from version 4.77 to the 6.15 version. Go check it out! This page is for reference only.
This module from Roving Networks is powerful, small, and very easy to use. This Bluetooth module is designed to replace serial cables. The Bluetooth****stack is completely encapsulated. The end user just sees serial characters being transmitted back and forth. Press the ‘A’ character from a terminal program on your computer and an ‘A’ will be pushed out the TX pin of the Bluetooth module.
Note: These modules have been revised to remove three unused RF pads from the bottom of the module. For more information on what pads were removed and why, check out the change notes below.
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This module is being evaluated for use in a home brew remote data acquisition project where data gathered by an Arduino based unit is transmitted to a PC.
Compared to a Class 2 unit the range is greater with this Class 1 unit (paired with another Class 1 transceiver) but so far my tests show it is not near the claimed 100 meters line of sight. This may be due to my setup configuration (despite using the highest power available setting) and data rates so more evaluation is needed before I can make a good claim about the range..
One advantage is that this module has flexible configuration options so the operation can be finely tailored to the application such as it can be configured to operate as either a slave or a master and with a wide selection of BAUD rates.
Assembly into a hobbyist’s project can be a bit daunting without a carrier board but even those without SMD capability can manage by soldering lead wires to the half vias needed for use and then treating this like a part with leads. Only a few connections are needed for usable operation.
For the price, there is not much risk in trying this unit for a project and there is a high probability that it will work as intended. The datasheets are very detailed and helpful and interfacing to a 5 volt system is not too difficult but do some reading about this before hooking them together. .