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Re: Nintendo DS Touchscreen & Arduino

 by Barx ¦  Sat Apr 09, 2011 9:37 am ¦  Forum: SparkFun Site Questions/Comments ¦  Topic: Nintendo DS Touchscreen & Arduino ¦  Replies: 11 ¦  Views: 7535

Your almost 2 years late with that reply mate. Think he would have either sorted it or gave up by now. Good try though.

Re: 8 x 8 led matrix question

 by Barx ¦  Wed Oct 27, 2010 12:44 pm ¦  Forum: SparkFun Product Questions ¦  Topic: 8 x 8 led matrix question ¦  Replies: 9 ¦  Views: 1888

Wow, thanks for that eric. As per either you or tecoist foil my plans and blow my theory out the window. Back to the drawing board. I had 4051's in mind after watching this video. After reading this and some similar pages, I assumed S0, S1 and S2 could share signals. And, by 'Data' I just meant a 1 ...

Re: Led Matrix - Shift Register, Multiplexer or both?

 by Barx ¦  Wed Oct 27, 2010 8:42 am ¦  Forum: SparkFun Product Questions ¦  Topic: Led Matrix - Shift Register, Multiplexer or both? ¦  Replies: 2 ¦  Views: 1754

Thanks Mike. Some food for thought. Time I stopped asking questions and started tinkering now. Lets see what I blow up first. :wink:

Led Matrix - Shift Register, Multiplexer or both?

 by Barx ¦  Tue Oct 26, 2010 9:48 am ¦  Forum: SparkFun Product Questions ¦  Topic: Led Matrix - Shift Register, Multiplexer or both? ¦  Replies: 2 ¦  Views: 1754

Hi chaps, the local n00b here. Going to be playing with my new 8 x 8 bi-colour LED Matrix. I've looked into ways used to multiplex the LED's and some people use shift registers like the '595'. Others use Multiplexers/Demultiplexers like the 4051. I've been trying to think which would be best. I thou...

Re: 8 x 8 led matrix question

 by Barx ¦  Sun Oct 24, 2010 9:06 am ¦  Forum: SparkFun Product Questions ¦  Topic: 8 x 8 led matrix question ¦  Replies: 9 ¦  Views: 1888

Realised I cant drive the matrix direct and do 2 colour. I've had a look around and dropped on the 4051 8 channel multiplexer/demultiplexer. My thoughts are. 3 of these, 1 to select row, 1 for Column Red other for Column Green. So when doing code trickery it's a matter of selecting row and outputtin...

Re: 8 x 8 led matrix question

 by Barx ¦  Sun Oct 24, 2010 1:16 am ¦  Forum: SparkFun Product Questions ¦  Topic: 8 x 8 led matrix question ¦  Replies: 9 ¦  Views: 1888

Sussed it out. Common anode. Not sure if thats good or bad, Sure I will soon find out. Would have thought it would have to be common cathode for use with arduino, But not got my head round it yet so could be talking babble.

Thanks for the info.

Re: 8 x 8 led matrix question

 by Barx ¦  Sat Oct 23, 2010 1:42 pm ¦  Forum: SparkFun Product Questions ¦  Topic: 8 x 8 led matrix question ¦  Replies: 9 ¦  Views: 1888

Looks 'like' it but its not 'it'. Here is the fella. Its bi colour, has 24 pins. Using this page, I can assume the pinout is same as the 8 x 8 bicolour matrices but smaller scale unit (mine is <40mm). It's just a matter of common anode or common cathode. I have mailed the seller and will wait a few ...

Re: Arduino header spacing.

 by Barx ¦  Sat Oct 23, 2010 1:34 pm ¦  Forum: Arduino ¦  Topic: Arduino header spacing. ¦  Replies: 5 ¦  Views: 7576

Wow, the offset headers are bloody hard to find here in the UK. The search will continue in the morning...

Re: Arduino header spacing.

 by Barx ¦  Sat Oct 23, 2010 12:48 pm ¦  Forum: Arduino ¦  Topic: Arduino header spacing. ¦  Replies: 5 ¦  Views: 7576

Well that explains that one then. Thanks chaps. Thought it was strange like.

8 x 8 led matrix question

 by Barx ¦  Sat Oct 23, 2010 11:53 am ¦  Forum: SparkFun Product Questions ¦  Topic: 8 x 8 led matrix question ¦  Replies: 9 ¦  Views: 1888

Bought an led matrix (off the eBay). Is there a part of the code to tell me whether it's common anode or cathode. On the side it's got 1088DEG 33 M2. On the bottom seen through the resin is WLG B1088.

Thanks

Arduino header spacing.

 by Barx ¦  Sat Oct 23, 2010 9:58 am ¦  Forum: Arduino ¦  Topic: Arduino header spacing. ¦  Replies: 5 ¦  Views: 7576

Not really post for help. More a statement expressing my thoughts. I've just got a new arduino Uno and a proto shield. I had plans on making circuits to use with the arduino on strip/matrix board and using standard single header pins to line up with the arduino. To my suprise, the arduino headers do...

Re: Current transformers

 by Barx ¦  Sat Oct 16, 2010 9:09 am ¦  Forum: SparkFun Product Questions ¦  Topic: Current transformers ¦  Replies: 7 ¦  Views: 1147

I was kind of hoping for that effect and was going to try it without. The current it will be detecting will be >10 amps and the CT is 20 amp max. So was hoping it would kick out 2-3 volts. loose a bit though diodes still gives me 1.5 - 2 volts to detect with adc. Kind of hoping this will rule out fa...

Re: Current transformers

 by Barx ¦  Sat Oct 16, 2010 8:08 am ¦  Forum: SparkFun Product Questions ¦  Topic: Current transformers ¦  Replies: 7 ¦  Views: 1147

Thanks jksoft. I've decided to use a small 220 ohm pot as the burden resistor to allow me to 'tweak' the output voltage (well thats my theory, probably got wrong end of stick as usual) and then run through a full rectifier made from 1n4002 diodes that I have laying around. I will leave room for a sm...

Re: Current transformers

 by Barx ¦  Thu Oct 14, 2010 10:29 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Current transformers ¦  Replies: 7 ¦  Views: 1147

Not looking to measure it, Just trying to tell whether current is flowing or not. So, the CT has 2 leads. black and grey and on top it says black is ground. Say I decided to use an arduino. I connect black to ground. Then put a resistor in series with the grey into either a recifier or straight into...

Current transformers

 by Barx ¦  Thu Oct 14, 2010 12:19 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Current transformers ¦  Replies: 7 ¦  Views: 1147

In relation to my 'monitoring temperatures > 100c' post. I have decided to get a current transformer to detect when the heater element is on (drawing current). It's a MI20 if that helps. Any tips on how to use it. It will either be hooked up to either a pic or arduino. More likely the latter if I ca...