SparkFun Electronics - Bluetooth SMD Module

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Bluetooth SMD Module - Roving Networks

sku: WRL-08497

Description: This module from Roving Networks is powerful, small, and very easy to use. This Bluetooth module is designed to replace serial cables. The Bluetoothstack 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.

Please note: This module will be replacing the phased-out Mitsumi module. The RN-41 has a lower cost and a more robust AT command set. The shape, size, and pinout of this module is the same as the Mitsumi part, although there are extra pads on the bottom of the device for added functionality.

Features:

Fully qualified Bluetoothmodule
FCC Certified
Fully configurable UART
UART Data rates up to 3Mbps
Over air data rate of 721kbps to 2.0Mbps
Low power sleep mode
Compatible with all Bluetoothproducts that support SPP (almost all do)
Includes support for BCSP, DUN, LAN, GAP SDP, RFCOMM, and L2CAP protocols
3.3V operation
Status pin
BluetoothTechnology v2.0 compatible
Class 1 power output

Documents:

Pricing

	272 in stock backorder allowed

$29.95	price
$26.96	10-99 (10% off)
$23.96	100+ (20% off)

	quantity

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Comments

15 comments

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	by djibi +1 \| Feb 20, 2009 at 3:33am 0
Hi everybody! Do you know how to solder the three pads located in the left of the second picture? Thanks in advance! Regards. Djibi

	by rglenn +11 \| Jul 12, 2009 at 9:17pm 0
Those 3 pads are, I believe, connections for a possible external antenna. For best performance, don't connect anything to them - heck, they shouldn't even have ground plane under them for best performance.

	by Mathew Pottinger +4.7 \| Jun 24, 2009 at 8:30pm 0
Hi Djibi, I used to be concerned with soldering these pads also, but now I don't bother as the RN-41 works acceptably without connecting those three pads.

Finger563

+2.3

| Jul 15, 2009 at 6:29pm

Hey everyone! Does anybody know how to access the D+ and D- pins on the bluetooth module (pins 17 and 18)? I am wanting to use them for my data/command transfer over bluetooth as well as to the bluetooth module but am slightly new at this and cannot seem to find documentation on it (I can't even find the actual datasheet on the roving networks site, when I go to the RN-41 webpage they have it gives me the RN-134 datasheet which is a wifi module). Any help would be greatly appreciated!

(p.s. I am using it to program/transfer data to/from the AT90USB and am wondering if it is possible to just hook it up to the D+ and D- lines of the AT90USB and if it will just transfer the data from bluetooth to those lines and vice/versa)

Thanks!

	by bzerk +3.5 \| Aug 25, 2009 at 3:51pm 0
Any chance of you guys adding a footprint to the SFE Eagle Library for the RN41? It would be tremendously helpful.

	by JustinHoMi +1 \| Sep 11, 2009 at 10:01am 0
I believe "BLUETOOTH-RN41" is this module.

	by jdesbonnet +1.7 \| Oct 4, 2009 at 12:35pm 0
Is it possible to retro-fit this module onto a breakout board (like the WRL-08550)? Or any other idiot-proof solution to get clean electrical contact? Soldering wires to the contacts is beyond my agility level I think.

	by n3 +1.6 \| Dec 28, 2009 at 5:16pm 0
Hi, wondering, could you directly hook this module the serial pins of an arduino, or do you need components in between ?

	by Zephyrcat +1.8 \| Jan 2, 2010 at 10:56am 0
I would love to know the answer to this as well. It sounds like you can, but I'm not sure.

	by lostangel556 +1.9 \| Jan 7, 2010 at 6:51pm 0
From the look of it you will need components inbetween to handle level switching between 3.3v and 5v depending on the arduino in use. you could use the schematic for below as an reference https://www.sparkfun.com/commerce/product_info.php?products_id=9358

	by Andlier +2.8 \| Jan 15, 2010 at 2:04am 0
Are gpio-pin 8,9,10 and 11 mixed up in the sparkfun-footprint? According to the datasheet they should be pin# 31, 32, 33 and 34, but sparkfun-eagle-part is: 34, 33, 32 and 31?

	by RoyVanegas +1.7 \| Feb 16, 2010 at 4:27pm 0
Hello, Does anyone know if this module works with audio? I was hoping to use two of these to stream sound between them. Thanks, Roy

	by fub +2.9 \| Apr 20, 2010 at 5:46am 0
In March, the RN-42 module came out. It works exactly like the RN-41, I dropped it into the same PCB and it's fine. But it has shorter range (10m), lower power consumption and costs a bit less thanks to the integrated antenna instead of ceramic antenna. So if you like the RN-41 (it's great!) but don't need the 100m range, the new part could be a good one.

	by RobinEdinburgh +1 \| Jul 14, 2010 at 11:55am 0
The datasheet states that the minimum operating voltage for this module is 3.0V. I presume this would work fine from 3.0V then? As you state "3.3V operation" in your "Features" section, I'm not completely sure!

	by N8B \| Jul 14, 2010 at 2:05pm
If Vdd is held at 3.3V the module will work fine. I would guess that the spec you are referring to means that if Vdd drops below 3.0V the module stops working.