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Re: [arduino] RF Signal interpreted by Software

 by Mee_n_Mac ¦  Sat Feb 28, 2015 2:49 pm ¦  Forum: Arduino ¦  Topic: [arduino] RF Signal interpreted by Software ¦  Replies: 15 ¦  Views: 957

Can the receiver access the transmitter's MAC address? I should know this: I have a couple of those things still in the package... first: power source. what's the 555 purpose? I'd do this with XBee S1 in a proper package. No microprocessor needed. XBee's MAC address reveals table # (MAC implies tab...

Re: Were to start with a Arduino timer

 by Mee_n_Mac ¦  Sat Feb 28, 2015 1:03 am ¦  Forum: Arduino ¦  Topic: Were to start with a Arduino timer ¦  Replies: 23 ¦  Views: 2530

Sorry for the late reply. I've written all the code but not tested any of it. I'm on my mobile ATM but when I get back to my PC I'll post it. If you want to be the alpha and beta tester ... well I'll warn you I'm a bad typist.

Re: [arduino] RF Signal interpreted by Software

 by Mee_n_Mac ¦  Sat Feb 28, 2015 12:54 am ¦  Forum: Arduino ¦  Topic: [arduino] RF Signal interpreted by Software ¦  Replies: 15 ¦  Views: 957

Too late ...
http://www.wsj.com/articles/SB100014240 ... 3174389816

Great thing about the Ziosk at Applebee's ... there's a refill my drink button !!

Re: MP3 Player Using PIR Sensor 150215

 by Mee_n_Mac ¦  Fri Feb 27, 2015 7:34 am ¦  Forum: SparkFun Product Questions ¦  Topic: MP3 Player Using PIR Sensor 150215 ¦  Replies: 8 ¦  Views: 1034

I'm not sure why your track loops forever, my quick look at your code indicates that it should never play. I see 2 problem areas; the hardware and the software. :o :twisted: On the first ... you've got a 3V sensor trying to directly signal a 5V Arduino. Your sensor works the opposite of what I guess...

Re: I need help with something for my son, please

 by Mee_n_Mac ¦  Thu Feb 26, 2015 7:44 pm ¦  Forum: Projects ¦  Topic: I need help with something for my son, please ¦  Replies: 3 ¦  Views: 489

The smallest Arduino commonly available would be Adafruit's Trinket. http://www.adafruit.com/products/1501 How would you be powering this all ? What kind of, how many (and what color) LEDs were you thinking of using ? Depending on the answers you might get either the 3.3V or 5V version of the above ...

Re: LinkSprite JPEG Color Camera TTL Interface

 by Mee_n_Mac ¦  Thu Feb 26, 2015 3:29 pm ¦  Forum: SparkFun Product Questions ¦  Topic: LinkSprite JPEG Color Camera TTL Interface ¦  Replies: 1 ¦  Views: 273

My guess is that the same camera is used w/ and w/o the IR LEDs, thus it lacks an IR cut filter. See this as well ...
http://forum.linksprite.com/index.php?/ ... sure-time/

Re: 12v to Arduino input using standard Songle relay. Am I

 by Mee_n_Mac ¦  Thu Feb 26, 2015 9:18 am ¦  Forum: Arduino ¦  Topic: 12v to Arduino input using standard Songle relay. Am I ok? ¦  Replies: 3 ¦  Views: 917

The simplest route would be to make a voltage divider from 2 resistors or a potentiometer. You also need to make sure the RFID reader ground is connected to the Arduino ground. https://learn.sparkfun.com/tutorials/voltage-dividers Or use a 5 volt zener diode. https://learn.sparkfun.com/tutorials/dio...

Re: Different Way to POV Globe

 by Mee_n_Mac ¦  Wed Feb 25, 2015 8:57 pm ¦  Forum: Projects ¦  Topic: Different Way to POV Globe ¦  Replies: 41 ¦  Views: 5687

Yup, they look real good for probably most POV projects. Not only is the PWM rate high, the data transfer rate is also (reportedly) sky high. Confirmed at 10+ MHz and 24 MHz has been claimed (Adafruit mentions 32 MHz !). So in 1 PWM period (1/19.2k) of ~ 52 usec, you could easily update 20+ pixels. ...

Re: Different Way to POV Globe

 by Mee_n_Mac ¦  Tue Feb 24, 2015 4:31 pm ¦  Forum: Projects ¦  Topic: Different Way to POV Globe ¦  Replies: 41 ¦  Views: 5687

OK this is really necroposting but as technology has advanced, so does what's possible. In this case the OP wanted to use the then new Neopixels in a POV globe. Alas, if just due to the PWM rate of a NeoPixel, it wasn't going to work. Spacing in time (PWM) meant tearing/spreading of colors in space....

Re: 8x8 red/green led matrix

 by Mee_n_Mac ¦  Mon Feb 23, 2015 1:55 pm ¦  Forum: SparkFun Product Questions ¦  Topic: 8x8 red/green led matrix ¦  Replies: 4 ¦  Views: 363

What level of current can each 12v source supply ? If you want all 64 LEDs on at the same time, it'll take ~1.3 A. You'll also need some way to "convert" 12v down to the LED voltage. That can be as simple as some resistors or a more efficient DC/DC LED driver. A driver is more $$s and you'll need mo...

Re: Integrating Lean Angle from Gyro Signal

 by Mee_n_Mac ¦  Sun Feb 22, 2015 9:14 pm ¦  Forum: Projects ¦  Topic: Integrating Lean Angle from Gyro Signal ¦  Replies: 5 ¦  Views: 645

First off I can see drift due to some residual gyro offset. W/o measuring it (offset) ahead of time I might look at the data you've shown and find a section where you know the bike won't be leaned over and the subtract an offset that makes that be true. Then you can begin to compare the 2 data sets....

Re: Integrating Lean Angle from Gyro Signal

 by Mee_n_Mac ¦  Sun Feb 22, 2015 7:18 pm ¦  Forum: Projects ¦  Topic: Integrating Lean Angle from Gyro Signal ¦  Replies: 5 ¦  Views: 645

I can differentiate the calculated lean angle over time to get a lean rate which matches nicely with the lean rate from the gyro. I cannot seem to go the other way, integrating the lean rate from the gyro to match the lean angle calculated from the GPS data. So what is it (specifically) that appear...

Re: High pitch noise from led board- help!

 by Mee_n_Mac ¦  Sun Feb 22, 2015 12:55 pm ¦  Forum: Projects ¦  Topic: High pitch noise from led board- help! ¦  Replies: 6 ¦  Views: 685

Re: Weather Shield

 by Mee_n_Mac ¦  Sun Feb 22, 2015 8:20 am ¦  Forum: Projects ¦  Topic: Weather Shield ¦  Replies: 2 ¦  Views: 473

You might want to read this thread.
https://forum.sparkfun.com/viewtopic.ph ... &hilit=nan

Re: Connect alarm sensor with claimed 28v NC alarm output?

 by Mee_n_Mac ¦  Sat Feb 21, 2015 7:14 pm ¦  Forum: Arduino ¦  Topic: Connect alarm sensor with claimed 28v NC alarm output? ¦  Replies: 5 ¦  Views: 755

The 5 ohm measurement seems high to me but you've confirmed what I thought. So connect 1 terminal to the Uno's ground and the other terminal to the Uno pin you want to use as an input. Then declare that pin as an input w/the internal pull up enabled. Read the pin as done below. The input will be HIG...

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