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691  Community / Bar Sport / Re: if any circuit emulator programmers pass by.. . on: December 15, 2013, 10:47:46 pm
Well...

An Arduino could be emulated to a degree...


For example, take a flip flop circuit... it could be designed several ways either transistors, an IC gate, 555 etc, you desihn the circuit and you run it, now in that same circuit speed it up a little add a microphone amplify the signal give it some feedback and when you're done designing it hardware wise you can then use the loudspeaker.

An LDR can spit out a simulated light level based  on real light levels, have the led light come on or screen come on whe  it's dark.

How about a component than when given a high signal will connect to a webserver and send a request, It could be used to develop some new Intresting phone applications using nothing more than emulated electronic circuits instead of writing pure code...

Create a clap circuit, emulate it and clap at your phone..




692  Using Arduino / General Electronics / Re: Trouble with a 7805 regulator. on: December 15, 2013, 07:19:35 pm
Buy a power transistor and a heatsink.... (then look up a pass transistor circuit)

Or use a switching regulator (easier, more efficient. ..)
693  Using Arduino / General Electronics / Re: Looking for a similar relay part on: December 15, 2013, 07:15:05 pm
Quote
I've never heard of snubbing diode, only a snubber circuit, the flyback diode is to supress the magnetic field when it collapses which is placed backwards with the relay and your circuit.. however this is low voltage don't forget when the metal contacts make contact the inductive load like a fluro, motors....
"A flyback diode (sometimes called a snubber diode, freewheeling diode, suppressor diode, suppression diode, clamp diode or catch diode[1]) is a diode used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply voltage is suddenly reduced or removed." (sic)
Quote
So are you saying to use a flyback a didode across the contacts?
In this case, place an appropriate diode (eg. 1N4001) across the coil.
See also: http://www.buildcircuit.com/how-to-use-a-relay/

Across the coil...

Yes but you never specified which one... 240v side or low voltage Arduino side.....

I know how to use and operate relays including using a diode and on high voltage side a snubber circuit.... I hope you meant low voltage side...
694  Using Arduino / General Electronics / Re: I can't do hardware debouncing (i.e. for a button push) using a capacitor on: December 15, 2013, 10:12:49 am
Circuit?
695  Using Arduino / General Electronics / Re: Looking for a similar relay part on: December 15, 2013, 05:19:41 am
Quote
A snubbing diode? (Resistor + capacitor)
A snubbing diode is needed if the load is inductive like a relay, solenoid or motor.
http://en.wikipedia.org/wiki/Flyback_diode

I've never heard of snubbing diode, only a snubber circuit, the flyback diode is to supress the magnetic field when it collapses which is placed backwards with the relay and your circuit.. however this is low voltage don't forget when the metal contacts make contact the inductive load like a fluro, motors....

Those kinds of applications  the mains 240v side of the relay a snubber circuit is a capcitor and resistor across the relay contacts...

So are you saying to use a flyback a didode across the contacts?
696  Community / Bar Sport / if any circuit emulator programmers pass by.. . on: December 15, 2013, 05:09:13 am
I'd love to see the next level of evolution....

How I hear you ask! Let's interface the phone sensors smiley  we could feed in analog values like accelerometer or compass and other similar sensors...

Then in circuit emulation feed the speaker into a circuit to create fuzz , feed in light sensor as an ldr, detecting light etc, but have it all emulated as a circuit doing the real thing!

Creating your own circuits to interact with phone sensors, transitors causing clipping if not correctly biased so without even being near a breadboard you get to experience the real thing emulated smiley
697  Using Arduino / General Electronics / Re: Use transistor to control 12v LEDs, schematic help needed on: December 15, 2013, 01:25:46 am
The reason for using 3 leds in series is so that you can power all 3 from  a single resistor basically, thats how the 12v strips work anyway ..

That and it's easier than individually soldering them all with their own resistors.
698  Using Arduino / General Electronics / Re: Looking for a similar relay part on: December 15, 2013, 01:21:11 am
This would work (Company is in Calgary).  Drive it with a transistor and use a snubbing diode across the coil:
https://solarbotics.com/product/re1/

This is another option, would require re-think of the design though:
http://www.adafruit.com/products/1150


A snubbing diode? (Resistor + capacitor)
699  Community / Bar Sport / Re: WAR on drugs. on: December 14, 2013, 08:15:09 pm
Haha...

[Please include sample here]
700  Using Arduino / Programming Questions / Re: Any arguments against using internal pull-ups? on: December 14, 2013, 06:59:26 pm
Look, being constrained by the hardware limitations means we're not going to see huge programs....

But let's suppose your sketch goes out into the wild and someone merges code and at the end of it fails because the person forgot to copy the pullup  into his/her setup ()

But you're right... probably wont cost you time to fix it if you know what you'rd doing...

(This could all have been avoided with a 4cents resistor lol)
701  Using Arduino / Programming Questions / Re: Any arguments against using internal pull-ups? on: December 14, 2013, 04:08:42 am
So nobody here has ever mistakes happen? Code vanishing?

Maybe because you used a backup, mouse / keyboard go mad accidentally deleting code, I'm not saying it will happen but it soundslike you've not been knee deep in code looking at tens of thousands if not hundreds of thousands of lines of code some of the desktop apps I've written over the past 15 years ..

But a 10k resistor to high is not that much of a deal to ensure it works properly despite of code used.
702  Community / Bar Sport / Re: WAR on drugs. on: December 14, 2013, 03:38:19 am
While I agree Paul, I think it could be solved using the method I said... so by tricking every supplier, dealer out there into signing up... come February you  then take every contact signed up and then raid and take out almost every dealer out there...

How effective would this be... I guess it would be a matter of time and just waiting ..... .

I just know it would fail because the amount of money that's made from illegal drugs... unconstitutional,  honey trap, illegal - whatever you call it, entrapment even telling people to sign up for a license to deal...

1-2 months later the police target the list, even if 80 percent are caught it would have a huge impact on crime.
703  Community / Bar Sport / Re: WAR on drugs. on: December 14, 2013, 03:22:42 am
Do law enforcement agencies and police really want to end it?

I'm not convinced they do!  For example,  if the police/DEA government simply issued out tv adverts, posters, billboard etc.... saying "deal drugs legally with a license"

Phone number at the bottom, website...

You have until say jan 29th 2014 to submit your application, name, phone number, etc...


How many people who deal would sign up?


(Drug war over, every dealer out there just got caught)

You're thinking about it all wrong. Legalizing drugs would help drug dealers about as much as Wal-mart moving into a town helped local mom-and-pop stores. The drug dealers will get put out of business by big drug companies that have the ability to mass produce drugs, negotiate for lower license fees, ensure product quality, and distribute product globally.

In the end, the consumers win. Drug users get cheaper and better drugs, the government gets more tax money that it can waste on bull****, and the police get a month off while the criminals find the next get-rich quick enterprise now that selling drugs is unprofitable.

Who said anything about making it legal?
704  Using Arduino / Programming Questions / Re: Any arguments against using internal pull-ups? on: December 14, 2013, 12:43:39 am
I have one argument....

Using a resistor ensures it's pulled up, what happens when you accidentally remove the pullup or switch states accidentally and you then spend hours debugging to find it....
705  Community / Bar Sport / WAR on drugs. on: December 13, 2013, 11:54:07 pm
Do law enforcement agencies and police really want to end it?

I'm not convinced they do!  For example,  if the police/DEA government simply issued out tv adverts, posters, billboard etc.... saying "deal drugs legally with a license"

Phone number at the bottom, website...

You have until say jan 29th 2014 to submit your application, name, phone number, etc...


How many people who deal would sign up?


(Drug war over, every dealer out there just got caught)
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