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1  Using Arduino / Networking, Protocols, and Devices / Supplier? Bluetooth Class 3 modules (short range wireless communication required on: April 06, 2014, 07:45:13 am
Weird question since most people want the most range from BT, I require the least range. The Class 3 BT fits the bill but it seems a hard to find module.

Anyone have any ideas?

Or, the flip side, where can I find some good reading material regarding antenna design to limit and direct the BT signal if I am then stuck with using a Class 2.

And yes I understand BT wasn't really designed for short ranges (except Class 3 though), and as such what other, robust RF system is available that is low on energy consumption?

Project requires:
- Robust data communication (mostly one way - occasional two way)
- Short range wireless especially during "pairing" phase
- No cross talk when other receiver is in area (hence short range)

Thank you to those who know way more than me.
2  Using Arduino / General Electronics / Re: 12v Automotive voltage as input to Arduino: Optos or SSR? on: February 20, 2014, 04:14:35 pm
Thank you jremington. Much appreciated.
3  Using Arduino / General Electronics / 12v Automotive voltage as input to Arduino: Optos or SSR? on: February 20, 2014, 03:50:08 pm
I am working on an automotive project. I want to use 12VDC outputs from the car (which means it can peak at around what....15VDC?), meaning when a circuit is made. I want to read those outputs as inputs to an Arduino.  Or to put it another way, when I switch on my headlights, I want to know that they are switched on by reading the 12VDC at the headlight as an input to the Arduino pin.

My options, from some research is to either use an opto (nice article here of someone also needing the 12VDC as input):
http://electronics.stackexchange.com/questions/43498/how-can-i-use-a-12-v-input-on-a-digital-arduino-pin

Or go with SSR. I am assuming, even though SSR's will be more expensive, they will be easier to implement since I'll purchase the SSR I need, then place it in the circuit.

Thus my question, which would be the elegant solution, the more robust solution?

I'll have to figure out which SSR to go for if I do, but I am sure that won't be too difficult. Although, I'm not always sure what is meant by it all. Merely found this one based purely on price at a glance and the 15V.
http://za.rs-online.com/web/p/solid-state-relays/6996496/?origin=PSF_428032|fp&cm_sp=featureproducts-_-FeaturedProductsContent-_-6996496

Thank you kindly for your experienced advice.
4  Using Arduino / Sensors / Aptina - General purpose 4K CMOS sensor - they supply Nikon on: April 30, 2013, 01:21:21 pm
Since I am focussing on a new career in the media industry and hardly get time to spend time with Arduino anylonger (although I constantly check the blog and the exhibition forum - kudo's everyone), I was wondering if anyone here saw that Aptina has released a general purpose 4K CMOS sensor to the general public.

I also wondered if anyone here (or over at Rasp or another proto-board) has started to play with them?

Some highlights:
- 60fps in 4K
-120fps in 1080p

http://www.aptina.com/products/image_sensors/ar1411hs/
5  Community / Exhibition / Gallery / Re: Portable console on: August 20, 2012, 02:07:45 pm
Cool game and console. It is one of those simple games that just somehow get incredibly addictive.
6  Using Arduino / Installation & Troubleshooting / Attiny & Arduino IDE - where to put folder to see boards? on: July 29, 2012, 12:53:05 pm
I tried putting it the sketchbook location, in the main folder, in the Arduino subfolder, I'm at the point where I'm considering the "boards" file that comes with Arduino standard folder structure.

I want to be able to program an Attiny45 chip for a little project I have in mind, but the instruction from the hlt.media.mit site isn't really helpful for me at least. Where do I put this folder structure so that I can program the Attiny chips?

Arduino IDE 1.01
Windows XP Pro

Thanks
7  Community / Exhibition / Gallery / Re: Arduino powered ECU for diesel engines on: July 07, 2012, 05:36:08 am
How long did the whole project take? And I ask with the assumption that you likely didn't work on it exclusively until this point.
8  Community / Exhibition / Gallery / Re: Arduino powered ECU for diesel engines on: July 06, 2012, 11:33:58 am
How did you establish the fuel mixture map?
9  Community / Exhibition / Gallery / Re: Arduino powered ECU for diesel engines on: July 06, 2012, 04:34:53 am
This is....how do I put this....FREAKING AWESOME!!!!!!!!!!!!

Will read about it this weekend. Thank you for sharing.
10  Using Arduino / General Electronics / Re: In a pickle! Need boost circuit - from 8.4Vdc to 9Vdc (up to 12Vdc max) on: April 25, 2012, 05:02:18 am
@ DVDdoug.

I was thinking the same, just finding a battery locally for the weekend, however making something is so much more fun. Alas, as the day is running at work, my best bet is a different battery.

Thank for the links, much appreciated.  smiley-cool
11  Using Arduino / General Electronics / [Sorted for now] Need boost circuit - from 8.4Vdc to 9Vdc (up to 12Vdc max) on: April 24, 2012, 02:10:29 am
Hi.

I'm in a pickle, I'll be attending a rally this weekend (leaving Thursday) and I need a boost circuit for my external battery pack for my GH2 camera. I've ordered a 8.4V NiMH battery pack that was tested by another user about two years ago however it seems to be just a tad to low in voltage to be used as an external voltage supply due to the error message displayed on the camera which means the voltage is a tad too low. I can safely use up to 12Vdc however want to keep it at just over 9V. I do not have time to order a new battery (since I thought my battery would work perfectly fine at 8.4V) - a boost circuit seems the best option at this point, however, another will be to source a local 9V battery pack somewhere - unfortunately South Africa isn't as hooked up as other parts of the world and requires a lot of foot work to find what you are looking for - might not have time. Considering my options.

Can anyone help? I can build circuits, just don't have the knowledge to design one.

P.S. Wildbill, haven't had time to look at that "if" statements yet - been incredibally busy this side with work and car purchase and making ready for the rally filming.
12  Using Arduino / Project Guidance / Re: Looking for custom enclosure for my project on: March 29, 2012, 09:07:08 am
3D printing is expensive... over $20 for a simple enclosure.

I do like the idea of potting it into a plastic brick. You you elaborate on that?

Chirping in....yes do elaborate on "potting into a plastic brick." 
13  Community / Exhibition / Gallery / Re: Tigger library released: A library for reading digital switches on the Arduino on: March 22, 2012, 06:08:32 am
This is cool. As soon as I reviewed and found the mistake I made on an IF statement (thanks WildBill), I will see about using this in that same project to get to know the library.

Thanks for posting and creating it.
14  Community / Exhibition / Gallery / Re: Big Ball Maze Game on: March 19, 2012, 05:47:46 am
Brilliant!
15  Using Arduino / Programming Questions / Re: [ASSISTANCE] If statements with debounce and conditions on: March 19, 2012, 02:53:06 am
Hey wildBill. I haven't put that code of yours in my project, unfortunately I don't have the hardware handy at the moment. However I hope to review it tonight to see if I can understand it and then explain to you (if you do not mind) where I have done it wrong in my code. The code bugged me this whole weekend cause I really wanted to figure it out and get it right.

Thank you so much for the assistance!
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