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1  Using Arduino / Motors, Mechanics, and Power / Re: Can I drive this Relay to control Pool Pump? on: April 24, 2013, 11:30:39 am
Would this do the trick?
http://www.sainsmart.com/arduino-pro-mini.html

Seems like it should!

Derek
2  Using Arduino / Motors, Mechanics, and Power / Re: Can I drive this Relay to control Pool Pump? on: April 24, 2013, 08:08:43 am
Should have seen that.  So I guess I need to ask the more general question:

I need a relay or contactor of some sort to switch on/off my 240V AC 1 HP (746 Watt) pool pump.  It seems like the pump is a high in-rush current device that may affect the device choice.  Also I would really like to drive this straight from Arduino so it should obviously be isolated electrically from the Arduino board.

Thanks everyone.
3  Using Arduino / Motors, Mechanics, and Power / Can I drive this Relay to control Pool Pump? on: April 23, 2013, 07:20:43 pm
I read in another post that someone wanted to use the following relay to switch on and off his 240 V AC 1 HP Pool Pump.

See http://ca.mouser.com/ProductDetail/Omron-Industrial/G7L-2A-BUBJ-CB-AC24/?qs=Pjd0UV7BHP%252bQ6pv360yf1RaaCWB%252b%252bB%252bz

The Data Sheet in pdf form is here http://www.mouser.com/ds/2/307/090600_OMRON_G7Ldatasheet_J055-E3-04-10965.pdf

Can I drive this direct from a 5V pin on the Arduino?  If not what would the circuit look like to connect to an Arduino UNO?

Thanks for your help.
4  Using Arduino / Project Guidance / Re: Maximum Sample rate on: December 10, 2012, 10:36:34 am
The magnetic sensor is either open or closed, so its digital?
Digital pins can be sampled faster than 10 KHz, which is 100uS/sample, or sample every 1600 clock cycles.
5  Products / Arduino Due / Re: Duemillanove drivers on: December 10, 2012, 10:27:48 am
Drivers can also be found at ftdichip.com
6  Products / Arduino Due / Re: Solution for the 5V vs 3.3V problem on: December 10, 2012, 10:19:27 am
Yes, it was just to get the headers defined, to show that 2 sets of headers could be made to fit next to each other - males down to the Due, and females up to shields.
I think I'll slide the 2nd set over some more to make room for signals to be buffered in the middle area  and then go back out, especially in the double row area.
Are there many mega shields? Maybe just drop that area and make sure the 20 Uno IO + power + ICSP headers are supported. Need to beef up the power traces.

Crossroads
(with the system calling me "derekmjenkins" for some reason - hopefully just a test towards solving my week day log in problems)
7  Using Arduino / General Electronics / Re: Do I have to use a Relay in this circuit to remotely trigger my camera? on: December 09, 2012, 09:05:13 am
Thanks for the help.  I'm not sure what the diode is for and I also wouldn't know which kind of diode to buy.  Could you help point one out at Digikey?


Derek
8  Using Arduino / General Electronics / Re: Do I have to use a Relay in this circuit to remotely trigger my camera? on: December 08, 2012, 06:27:21 pm
Could you point to a sample part I should use, maybe from digikey website?

Thanks

Derek
9  Using Arduino / General Electronics / Do I have to use a Relay in this circuit to remotely trigger my camera? on: December 08, 2012, 06:00:38 pm
Hello everyone.  I am brand new to Arduino so sorry if this is the wrong area to post this, please point me to the right area if so.

I am trying to replicate the remote trigger switch for my Panasonic GH1 camera.  The electrical schematic required is basically two switches that change the resistance seen by the camera.  See the following website to see the schematic: http://www.robotroom.com/Macro-Photography-2.html.

I want to use my Arduino UNO to remotely trigger the camera every few seconds to put together a time lapse video.  Eventually this will hook up to a small rolling cart that will move slowly along taking pictures every 30s - 1min to produce a nice photographic video effect.

To replicate pushing the button via the UNO, do I need to use two 5 volt SPST relays like these from digikey http://www.digikey.ca/product-detail/en/9001-05-02/306-1247-ND/660216? Is there something else I can use like an opto-isolator?

If I use a SPDT relay can I push both buttons at once?

Any help is appreciated.

Derek
10  Using Arduino / Project Guidance / Newbie question about replicating button press with Arduino UNO on: December 08, 2012, 11:09:39 am
Hello everyone.  I am brand new to Arduino so sorry if this is the wrong area to post this, please point me to the right area if so.

I am trying to replicate the remote trigger switch for my Panasonic GH1.  The electrical schematic required is basically two switches that change the resistance seen by the camera.  See the following website to see the schematic: http://www.robotroom.com/Macro-Photography-2.html.

I want to use my Arduino UNO to remotely trigger the camera every few seconds to put together a time lapse video.  Eventually this will hook up to a small rolling cart that will move slowly along taking pictures every 30s - 1min to produce a nice photographic video effect.

I can't figure out how to actually make arduino replicate pushing a button.  I can have it react to a push button, but not push the button.  Do I need an opto-isolator for this?  A relay would seem overkill.

Any help is appreciated.

Derek
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