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1  Using Arduino / LEDs and Multiplexing / Re: Long LED strip starts to bug out at last two feet or so on: April 03, 2014, 06:03:40 am
Try connecting the + and - leads from power supply to both ends of the strip.
Add a 220 to 470 ohm resistor on the data line, also placing a 1000uF cap on the + and - of the strip can help with power issues as stated in this article towards the page bottom.
2  Using Arduino / Sensors / Re: a3144e hall effect sensor on: March 14, 2014, 07:12:12 am
Code?
Schematic?
3  Using Arduino / General Electronics / Re: Good quality cheap multimeter on: March 06, 2014, 09:10:12 am
I use the MS8268 for under $30
If you need inductance and temp. readings then:
MS8269 for under $40

4  Using Arduino / Sensors / Re: NewPing Library: HC-SR04, SRF05, SRF06, DYP-ME007, Parallax PING))) - v1.5 on: March 04, 2014, 07:54:00 am
You want it to print mm instead of cm in the console?
If so change the abbreviations in the sketch:
Code:
Serial.println("cm");
to
Code:
Serial.println("mm");
And do as  john21403 says to mathematically  convert cm to mm.
5  Community / Exhibition / Gallery / Re: Hot Yet? (a tiny85 project) on: March 03, 2014, 07:03:18 am
Very cool smiley-cool ... or hot  smiley-evil
My 85s should be here this week, great project to play around with.
The wrist band idea is neat, could be done with a few segments of an RGB strip.
6  Community / Exhibition / Gallery / Re: Just to share... (5 x 10watt RGBs) no current regulation! on: February 24, 2014, 06:57:41 am
cjdelphi, been back to your desktop lately?
Still hoping you'll post the sketch you used to achieve this.
7  Community / Exhibition / Gallery / Re: Just to share... (5 x 10watt RGBs) no current regulation! on: February 15, 2014, 06:25:03 pm
Thanks that will be great.

8  Community / Exhibition / Gallery / Re: Just to share... (5 x 10watt RGBs) no current regulation! on: February 15, 2014, 11:17:44 am
cjdelphi,
On each color:
What's the max PWM value that you use for a 120mA limit?
What's the voltage drop across the color segment when 120mA is being drawn?

I tried this and to maintain a 200mA draw limit on the green segment I had to use 72 as a max PWM value.
9  Using Arduino / Project Guidance / Re: internet radio player possible with arduino? on: February 13, 2014, 01:24:38 pm
It does it's job, allowing everything to play nice together.
Also gives the ability to code in button control for station selection, maybe add an RTC and have a radio alarm.
Project + (Arduino + Imagination) = Endless possibilities.
10  Using Arduino / Project Guidance / Re: internet radio player possible with arduino? on: February 13, 2014, 06:50:47 am
Check out Maniacbug's project: Arduino on Ice: Internet Radio via Shoutcast
11  Using Arduino / LEDs and Multiplexing / Re: Low frequency flicker when using multiple PWM outputs and MOSFETs on: February 08, 2014, 07:20:56 am
 .sch is a file extension used by  EAGLE for schematics.
12  Using Arduino / Displays / Re: issue with tft lcd example code on: January 28, 2014, 07:24:33 am
That sketch is not for UNO.
Compiles fine for Arduino MEGA or MEGA 2560.
13  Using Arduino / Sensors / Re: Piezo sensor sensitivity. on: January 27, 2014, 12:07:13 pm
If it were my project I would use 2 or more piezos. At least one for soft taps and one for hard taps.
Each with its own conditioning circuit for it's range.
Taking the example from Taiko Trainer (LM358) link I posted above, I would go from there.
I have quite a few different piezos hanging around and have been able to get a nice pulse on a few that I tried using variants of those circuits.
Also, I would test the conditioning circuit while someone is dancing and make adjustments according to those readings.
Are you using a breadboard for the conditioning circuit?  Cleaner readings from PCB board.
Are you using a plain flat disk piezo? If so what size?
14  Using Arduino / Sensors / Re: Sum up the temperature in DHT11 sensor on: January 16, 2014, 11:46:01 am
Samples of what?
How are you determining the moisture content prior to drying?
Example: A saturated sponge weighs 10 oz. . Say it's weight is a combination of 8oz water and 2oz sponge material.
So when it has 50% of it's moisture content removed it will weigh 6 oz. .
15  Community / Bar Sport / Re: Thomas Edison vs Tesla on: January 14, 2014, 09:42:45 pm
High voltage high current DC can stop your heart.
Think of TV tube caps.
But while pondering the question, a bit of comic relief- Edison Vs Tesla
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