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1  Using Arduino / Programming Questions / Re: Serial communication between two programs via USB ? on: April 13, 2014, 01:58:25 am
Thanks for the quick response.   Would it be a possible/better solution to have vc communicate with processing on one port and then pass that through to the arduino?
2  Using Arduino / Programming Questions / Serial communication between two programs via USB ? on: April 13, 2014, 01:45:56 am
Hey guys,

I'm developing a device for my car that will give me a ui to control various functions in my classic car (power locks, windows, etc) I am designing the ui in processing and it's working great.  Now I want to add some voice recognition features using voxcommando   Vc uses a python script to communicate with the arduino via serial USB.  Is there a way to have both processing and box communicate with an Arduino from the same com port?

For those unfamiliar with vc:
http://voxcommando.com/forum/index.php?topic=1452.0
3  Community / Exhibition / Gallery / Re: Semi-Universal Traction Control System on: March 24, 2014, 11:44:30 pm
this is awesome!
4  Using Arduino / Project Guidance / Re: alt option to active rfid on: March 24, 2014, 10:05:11 pm
just talked to these guys, i think this is the solution i'm going to end up using:
http://www.rfdigital.com/product/rfd21815-eval-board-for-rfd21733/
http://www.rfdigital.com/product-category/keyfob-remotes/


Hello Scott,

Did you already have your project working.
I'm also looking for the part: "No user interface"...........

If you do, will you share it with me?

Thanks.
Jan Hein
5  Using Arduino / Project Guidance / Re: alt option to active rfid on: February 25, 2014, 11:59:08 am
Hey Jan,

I haven't made any headway on this project.  I did back this a while back:
https://launch.punchthrough.com/

and I'm waiting for it to arrive.  Hopefully i can figure out some alternative
6  Using Arduino / Project Guidance / Re: Which arduino to use? on: December 13, 2013, 09:00:24 pm
did you end up getting this to work?
7  Using Arduino / Project Guidance / Re: open source perfect pass on: December 11, 2013, 03:44:28 pm
yeah, you can skip the gauge and master module and roll your own.  but for the linkage to the motor, i think the $150 is well worth it.  that way you don't have to re-engineer the safety mechanism that disengages when you throttle down
8  Using Arduino / Project Guidance / Re: open source perfect pass on: December 11, 2013, 03:04:48 pm
Can anyone recommend a stepper motor for this project?  Cheaper the better but still functional.
probably not what you want to hear, but have you thought about buying their servo setup?  it's ha been engineered and will be less likely to fail due to mechanical issue then your home built unit.  of course you can always kill the engine if something major happens, but it may be worth the investment to have something tried and true...and reliable. 
9  Using Arduino / Project Guidance / Re: Passive Proximity Door Lock on: December 10, 2013, 12:28:07 pm
i've been looking to do the same exact thing. 

i've looked into bt solutions but security seems to be the biggest concern with that route.

one thing i was thinking about doing is getting this:
http://www.ananiahelectronics.com/RF8315T-sc.htm

and this:
http://www.ananiahelectronics.com/RF8315R.htm

then tapping off of pin 7 for TTL. 

That would get the proximity portion out of the way but the rfid is hard coded to the chip.  so that isn't very secure.   
i was then wondering if i pared that up with an arduino based rf board like this:
http://www.kickstarter.com/projects/flutterwireless/flutter-20-wireless-arduino-with-half-mile-1km-ran?ref=search
and used that as a security rolling code generator...

seems kind of bulky though.  if i could figure out a way to get the above product to approximate distance we'd have an all in one solutions
10  Using Arduino / Project Guidance / Re: open source perfect pass on: December 09, 2013, 11:39:02 pm
i have a perfect pass on my malibu, it's awesome butyou have to factor in reaction time.  you are going to have to be able to adjust some (pid?) parameters that will take weight into consideration.  if you have your ballast (or crew members) loaded up then the throttle will react differently then when empty.

11  Using Arduino / Project Guidance / alt option to active rfid on: December 09, 2013, 07:39:45 pm
Hey guys,

I'm planning on making a keyless entry and pushbutton start for my classic car.   I have found an active rfid fob from china that was arduino compatible, but it doesn't sound like it has any security features built into it.  I want to explore some other solutions that will help me achieve my goals:
  • Secure: possibly writing a rolling code feature
  • No user interface: I want the doors to unlock when i approach the vehicle.  as long as it's getting a signal it will allow me to start the car.  if the fob is out of range then it locks the doors and deactivates the starter mechanism.
  • Low Power, I'd like for this to not drain my car battery on the vehicle side of things and i'd like for it to last months on a coin cell battery.

Some options I have been considering:
limit the range of one of these by adjusting the size of the antenna:
http://www.kickstarter.com/projects/flutterwireless/flutter-20-wireless-arduino-with-half-mile-1km-ran?ref=search

or possibly Bluetooth ble
http://www.kickstarter.com/projects/kytelabs/bleduino-bluetooth-40-ble-made-easy-arduino-compat?ref=search


but i'm not sure that either one of these will be a good option.   can anyone give me some advice, or a direction to look to for a possible solution to my project?

thanks,

scott
12  Using Arduino / Networking, Protocols, and Devices / Re: Proximity approximation using RFM22B possible? on: November 30, 2013, 01:44:01 pm
Thank you for the help.   To prolong life I was thinking about only having it transmit data every 500ms until it was in range. Then after that it could wait every 5000ms to verify if it still was in range. I think that should extend the life of the battery.
13  Using Arduino / Networking, Protocols, and Devices / Re: Proximity approximation using RFM22B possible? on: November 30, 2013, 10:55:08 am
Maybe I'm asking for the wrong thing. Is there a way of dialing back the effective range of that module to only transmit at a distance of ~1.5m
14  Using Arduino / Networking, Protocols, and Devices / Re: Proximity approximation using RFM22B possible? on: November 30, 2013, 08:59:27 am
Well. What I need to figure out is then I'm within a ~1.5m of the transceiver or less. Is there another way of figuring that out?
15  Using Arduino / Networking, Protocols, and Devices / Proximity approximation using RFM22B possible? on: November 30, 2013, 03:59:42 am
I have a project that I need to approximate a secure/cost effective active RFID system.  The active RFID solutions out there are either too expensive, not secure or bit arduino friendly.  I was wondering if it was possible to use a pair 433MHz RFM22B boards and calculate an approximate distance between the two? (Assuming that any obstructions of the signal line of sight will be constant).
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