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1  Using Arduino / General Electronics / Sensor Switching on: May 18, 2013, 11:37:26 pm
So I have two encoders. These two encoders outputs are wired up to the same node where an arduino pin is reading the encoders. Unfortunately, I am not able to just turn off one encoder while the other encoder sends its outputs to that one arduino pin for some reason. I think this is due to the outputs of two different encoders being wired to the same node.

I then decided to get myself to the store and buy some transistors. I thought that I could simply send a signal to the to the transistor from the arduino and allow one output to pass through, then send another signal to the other transistor where the other output was hooked up and it would let that output signal pass through.

Unfortunately, it doesn't work.

Would you guys know of a solution using the transistors?

If not, i just thought of hooking up some diodes in series with the outputs then connecting to the input of the arduino.

Let me know.
THANK YOU smiley
2  Using Arduino / Sensors / Switching between Encoders on: May 02, 2013, 03:57:59 am
Hey guys,

I have two encoders. I want one encoder to be giving output at one time and then have the other give output at another time. Basically, I only want one active at a time.

Is there some type of controller that I can purchase or a circuit I can build where I interface with one encoder for a certain amount of time then send a logic signal to the controller to make the other encoder active and the other one inactive?

I'd rather not be unplugging and pluggin in the two different encoders...

It would be great help if someone had an idea!

Thanks :})
3  Using Arduino / Motors, Mechanics, and Power / AC Motors in Parallel on: April 27, 2013, 04:10:04 pm
Dear all,

I have an epson printer that runs an ac motor as a paper feeder. I want to connect another ac motor in parallel to that so they run at the same speed, torque, and etc.

One motor will have significantly more load than the other...

Do you think this will work?

Let me know!

Thank you! smiley-grin
4  Using Arduino / Motors, Mechanics, and Power / Heating(PID+SSR) on: March 22, 2013, 01:27:51 am
Ok guys. I am trying to heat up a material using strip heaters. The strip heater is rated 120 V AC with a power of 325 Watts.

Now tell me if I am going about this correctly... I will have a 120 AC input to the Solid State Relay (SSR) as well as a PWM that is being controlled by a PID on my Arduino. The output of the SSR will be connected to the heating element. That is how it works right?

Also, based on my understanding... is it true that I am using an SSR in order to turn the heating on/off to  control the temperature (heat output) with the PWM?

And at last, how would I go about finding an SSR that would work with this heating element?

Thanks in advance! smiley
5  Using Arduino / Programming Questions / Re: Using PID library for heating element with SSR and max31855 on: March 20, 2013, 11:32:38 pm
I know this thread is somewhat outdated... But would you mind telling me which SSR and Heating element you bought? I am trying to work on a project where I will need both of these and need some guidance in purchasing...
6  Using Arduino / Project Guidance / Re: Switching Control Signal on: March 11, 2013, 01:17:43 pm
What is the correct way to do it, if I may ask? smiley
7  Using Arduino / Project Guidance / Switching Control Signal on: March 10, 2013, 09:46:06 pm
Hey guys,

So what I want to do is switch the control of a stepper motor from a computer to an arduino once a switch is hit. I have provided a circuit that should work ... I am not the best at electronics so please tell me if it seems ok. The outputs of the Arduino and the Computer are going to be some sort of controls signals for a stepper motor.

Will this work?

Thanks in advance smiley
Picture is attached.
8  Using Arduino / Project Guidance / Re: Power Question on: March 10, 2013, 04:54:01 am
Lol DUH! smiley-razz Gosh... I'm up too late. Thanks HAHAHA
9  Using Arduino / Project Guidance / Power Question on: March 10, 2013, 04:47:26 am
I am building a system that uses a hacked inkjet printer and an Arduino plus various motors... etc.
With all these different components, I seem to be lost in terms of how to supply power to everything.
I will be plugging this system into the wall.
From the AC signal from the wall, should I run (split) it to two different wires and have one go to the printer and the other go to an AC to DC voltage regulator to power everything else?
What are the effects of splitting an AC signal from the wall to two different wires?

Thanks in advance! smiley
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