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Electronics => Electronics => Topic started by: offy on March 18, 2009, 04:56:04 PM

Title: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: offy on March 18, 2009, 04:56:04 PM
How do you wire up the BlueSMIRF for TX, RX, Power, and Ground?

This is the BlueSMIRF I want.
http://www.robotshop.us/sfe-bluesmirf-silver-bluetooth-modem.html (http://www.robotshop.us/sfe-bluesmirf-silver-bluetooth-modem.html)

This is the layout of my microcontroller, please tell me where the wires go also
http://curiousinventor.com/images/kits/roboduino/roboduino_1_16_layout.jpg (http://curiousinventor.com/images/kits/roboduino/roboduino_1_16_layout.jpg)
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: pomprocker on March 18, 2009, 05:53:45 PM
give your bluesmirf voltage, ground it to the roboduino, and hook up the tx and rx lines to the roboduino.
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: offy on March 18, 2009, 05:56:45 PM
But what pins on the bluesmirf go to what?

I think pin 4 is TX
I think pin 5 is RX

Also how do I plug in a single pin into a 3 pin TX and RX input?

*EDIT*
I found this on google, it shows you how to hook it up right
http://www.lynxmotion.com/images/html/build117.htm (http://www.lynxmotion.com/images/html/build117.htm)

But I don't know where to put the power onto my roboduino board
*EDIT*
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: Razor Concepts on March 18, 2009, 06:35:36 PM
The roboduino has labeled power and ground pins. Also look at the included roboduino manuals if you still need help identifying what pins do what.
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: offy on March 18, 2009, 06:58:33 PM
Would I put it into the blue box in the picture, or the red box? Or am I way off?
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: pomprocker on March 18, 2009, 08:49:11 PM
there are many options its up to you.

Give it regulated 5v from anywhere. Ground it to the Roboduino anywhere on there. There are also two places you can put it for rx/tx


Use your multimeter if your not sure. but just a hint, the blue one is regulated.
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: Hanoush on March 19, 2009, 02:47:26 AM
I was wondering, Can I cut a USB cable and connect the BlueSmirf to it then connect it directly to the PC because I want to make a software reset ?
I think a USB cable have 4 wires (Vcc,GND.Tx,Rx) and powered by 3.3V right ?
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: SmAsH on March 19, 2009, 04:36:16 AM
a usb is powered by 5V ;) but im not entirely sure about the direct to pc thing.
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: airman00 on March 19, 2009, 05:44:51 AM
Quote from: Hanoush on March 19, 2009, 02:47:26 AM
I was wondering, Can I cut a USB cable and connect the BlueSmirf to it then connect it directly to the PC because I want to make a software reset ?
I think a USB cable have 4 wires (Vcc,GND.Tx,Rx) and powered by 3.3V right ?
USB gives USB signals, NOT UART signals
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: Hanoush on March 19, 2009, 08:43:04 AM
so,I have to use something like R232 shifter ?
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: airman00 on March 19, 2009, 09:44:00 AM
Quote from: Hanoush on March 19, 2009, 08:43:04 AM
so,I have to use something like R232 shifter ?

Bluesmirf outputs TTL UART signals

Get an adapter from TTL to USB - the FT232 does that. And sparkfun.com sells a FT232 breakout board
Title: Re: Wire up BlueSMIRF for TX, RX, Power, Ground
Post by: pomprocker on March 19, 2009, 10:09:39 AM
Quote from: Hanoush on March 19, 2009, 08:43:04 AM
so,I have to use something like R232 shifter ?

Just get a regular bluetooth dongle from like best buy or something for your PC.