Comments on: Build A Roomba Bluetooth Adapter

By: bobby

bobby — Sat, 10 Mar 2012 21:25:05 +0000

Hi, I found this thread a few weeks ago and thinking it is pretty cool, I decided to build one myself. I followed the plans exactly, using the newer RN-42 bluesmirf silver (the PCB is red). I’m connecting to it on my android smartphone using the roomba touch drive app. The app connects to the module fine but I cannot get roomba to respond to any commands from the touch-drive app. Any suggestions? Thanks!

By: Electronics mini projects

Electronics mini projects — Sat, 10 Sep 2011 18:36:20 +0000

[...] Build A Roomba Bluetooth Adapter [...]

By: Dada

Dada — Sat, 16 Jul 2011 06:55:36 +0000

Could this http://www.dealextreme.com/p/wireless-bluetooth-rs232-ttl-transceiver-module-80711 be used to build a rootooth replacing the Blue SMiRF? Here’s the datasheet, I think, so could TTL levels on it produce +5V? I’m an electronics n00b but I’d like to make this thing…if I could hook up my laptop to this thing it would be perfect…wireless control of my roomba 530 :)))

By: Brandon

Brandon — Tue, 16 Nov 2010 23:03:36 +0000

I’ve been working with the Firefly AF70 device for a design project and after playing with it’s command mode I’ve found that changing the baud rate using the ‘su’ command will save the settings so that you don’t have to set it every time you power on the radio. Here’s the documentation:
http://www.sparkfun.com/datasheets/Wireless/Bluetooth/rn-bluetooth-um.pdf
There are similar commands for setting the parity, etc.

By: Mark

Mark — Mon, 16 Aug 2010 17:06:32 +0000

Found a serial Bluetooth adapter that works perfectly fine here:

http://www.usconverters.com/index.php?main_page=product_info&cPath=70&products_id=228

By: iRobot Roomba 560 « dry ice cream

iRobot Roomba 560 « dry ice cream — Wed, 12 May 2010 22:57:42 +0000

[...] podmienić software i dostosować algorytm sprzątania na potrzeby własnego domu. Inny pomysł, to rozbudowanie robota o adapter bluetooth –przyda się do sterowania robotem przez telefon [...]

By: Dinesh

Dinesh — Mon, 01 Feb 2010 10:16:36 +0000

hi…. i was searching for interfacing bluetooth with microcontroller and got into your site… can you pls provide me the technical details on interfacing bluetooth with a microcontroller with necessary circuit diagram and theory… Pls help us, as we are working on a project related to that… pls send the documents to the mentioned email id… thanks in advance…

By: olumide

olumide — Mon, 02 Nov 2009 14:34:47 +0000

hi nice hack, i was search for bluetooth diagram and i come across your site, am intrested on that, i will like to buy it for experience.do you sell international? becos i base in africa. reply me

By: todbot

todbot — Thu, 09 Jul 2009 22:04:45 +0000

Hi Alan,
The capacitor values aren’t that critical. But for my circuit as wired-up, I used a 0.1uF on the input part of the 7805 voltage regulator and a 1uF on the output. I think I was originally going to use two 1uF but couldn’t find a second one. The main thing is to have some capacitance on both sides of the regulator and to have the total be at least 1uF. (the caps help stabilize the circuitry inside the voltage regulator)

Some people put a 0.1uF and a larger 10-100uF on both sides of the voltage regulator. A larger cap helps guard against large droops in power (“brownouts”, like if you were turning on a relay), while the 0.1uF helps guard against noise on the power line (like if you had a motor running constantly)

In this application, the BlueSmirf also has some capacitors on it to help stabilize the power, so we just have to get the power to it “good enough”.

By: Alan

Alan — Thu, 09 Jul 2009 20:29:45 +0000

Thanks for the prompt response. I think I will fork out the extra cash for the same chip that you used.

As I was gathering parts I noticed that your schematic says to use (2) 1uF capacitors but the pictures show you using two different ones and the notes on Flickr.com say to use (1) .1uF and (1)1-10uF. If two different ones are required can you let me know which one goes on the right and which on the left. I am no expert in electronics, although I did pass that class :) but I believe the .1uF goes on the left hand side, is this correct?

Thanks again.