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1  Using Arduino / General Electronics / Re: Solid State Relay on: May 15, 2014, 04:24:55 pm
Ok thanks
2  Using Arduino / General Electronics / Re: Solid State Relay on: May 15, 2014, 12:48:16 pm
Quote
fungus... There's two diodes in your diagram so are you sure it's AC?

Yes it is AC half wave. This is a snippet of the larger schematic a weather vane. The switches are reed (worked by a magnet) There is a wire that comes off the anode side of the diode (not shown). The lamp only lights on one side of the waveform (plus side) when the switch is closed. It has a matching circuit (duplicate this one) with the diodes flipped the other way. If the switch was closed on the matching circuit its lamp would light on the opposite waveform (minus side).  If both switches are closed both lamps are on. The setup from the 8vac to the wire at anode side of the diode is duped 3 more times in parallel. The diodes at ground just make sure all 4 circuits are in sink. (basically 4 wires operate 8 lamp)

I would just like to avoid the relay approach as it would be opening an closing many times per hour. (I want to simulate the wind direction using the Arduino)

Quote
DVDdoug... Do you know what the wattage or amperage rating for the lamp

I don't know. I believe the lights might be around 6v could be 3 (ill have to stick a meter on them). I can't remember the resistor rating. But hay 8 volt source two diodes and a lamp.
I just found this relay:
http://www.alliedelec.com/images/products/datasheets/bm/NTE_ELECTRONICS/70011947.pdf
Im glad to know there is an SSR on there somewhere.
3  Using Arduino / General Electronics / Solid State Relay on: May 15, 2014, 09:10:33 am
I need to replace a switch something like a relay, opto-coupler, or SSR.

Basically here is what I have:



I would like to use an SSR if at all possible. If so what SSR would I need?  I would rather not use a relay because of its Mechanical life. I also don't know if an opto-coupler would work in this situation, nor do I know how to set it up for AC.

Any help would be appreciated.

Thanks

Keven
4  Using Arduino / Networking, Protocols, and Devices / Combine hex for xbee on: December 28, 2013, 11:40:01 pm
Is there a way to combine several Serial.write's into one?

For example, in this DH and DL xbee snippet (I've left off the other parts of the frame)
Code:
 
Serial.write((byte)0x00);
Serial.write((byte)0x13); 
Serial.write((byte)0xA2);
Serial.write((byte)0x00);
Serial.write((byte)0x40);
Serial.write((byte)0xB0);
Serial.write((byte)0x9D);
Serial.write((byte)0x78);
Serial.write(0xFF);
Serial.write(0xFE);

// this would be the checksum
long sum =  0x00 + 0x13 + 0xA2 + 0x00 + 0x40 + 0xB0 + 0x9D + 0x78 + 0xFF + 0xFE;


I've tried building the DH and DL part of the frame like this. But this doesn't work. (I'm just showing the DH and DL part of the frame)

Serial.write(0x0013A200);
Serial.write(0x40B09D78);
and then the checksum
long sum = 0x17 + 0x0013A200 + 0x40B09D78 + 0xFF + 0xFE;

My goal is to combine the high and low byte of the destination xbee into one line.

Can someone help
5  Using Arduino / Networking, Protocols, and Devices / Read the state of a remote pin on: September 10, 2013, 11:36:28 am
I’m using 2 uno’s and 2 xBee Series 1 for wireless communication. The wireless communication between the two uno’s via the xBee works just fine. I would like to read the state of a pin on the end device (whether its HIGH or LOW) from the coordinator.  Thus if the coordinator were to ever go off-line and then come back up it could then read the state of the end Device’s Uno pin configuration when the coordinator’s void setup() function runs. I’m not sure how this is done.  Could someone please help me?
6  Topics / Home Automation and Networked Objects / Re: Kambrook Remote Power Outlet & Arduino - working on: August 09, 2013, 09:22:18 am
Quote
I initially tried NewRemoteSwitch, RemoteSwitch, and RCswitch. None of these were able to detect this unit. So I used the manual analysis method by sniffing the signals.

Could someone explain how sniffing works and perhaps a simple example how to do it.
7  Using Arduino / General Electronics / Re: first pcb try on: February 19, 2013, 10:11:29 am
I have read this post with great interest. I'm new to the PCB layout and design. For those of you who are drilling your own boards. Where do I find a .08 bit in the USA. What size of bit or bits do I need? Where can I get them? I believe .08 is the correct bit size for most leads.

Thanks

8  Using Arduino / Microcontrollers / Re: Nano on: February 05, 2013, 06:42:07 pm
I can't figure it out. I'm on a mac using eagle 6.4 and can't find any way to export a project or rather an .sch file. I'm trying to make a library from the file at this link:
http://arduino.cc/en/uploads/Main/ArduinoNano30Eagle.zip

Can someone help me out in exporting the nano eagle file or tell me what ulp program to use to get the Nano file into a library?

Perhaps a short step by step?

I would like to create a library with just the part and pinouts.

Thanks again
9  Using Arduino / Microcontrollers / Re: Nano on: February 01, 2013, 10:50:58 am
Thank you.
10  Using Arduino / Microcontrollers / Re: Nano on: January 31, 2013, 06:29:52 pm
Ok I grabed the eagle nano file from here
http://arduino.cc/en/uploads/Main/ArduinoNano30Eagle.zip

I'm not an eagle power user so I need some help. After unzipping I now have two files. A .brd and a .sch.
How do I convert the .brd file into a device that can be used in other eagle projects?

11  Using Arduino / Microcontrollers / Nano on: January 30, 2013, 02:46:38 pm
I've looked all over the web but cannot find an Eagle lib for Arduino nano. Can someone help me out?

Thanks in advance.
12  Using Arduino / General Electronics / Re: Checking for 12 Volts on: December 01, 2012, 03:33:26 pm
Quote
So I can eliminate the pull down?

No, the pulldown is what keeps the input from floating, and also produces 5V to the pin.
As dc42 says, higher value Rs can be used, just keep the same ratio.

Read the part on figure 2,

http://en.wikipedia.org/wiki/Voltage_divider


Yea, I just read my posted then slapped my self in the head. I need both resistors. Dumb on my part. I will go with the higher values.

Thanks
13  Using Arduino / General Electronics / Re: Checking for 12 Volts on: December 01, 2012, 03:25:09 pm
The nice thing about that sucker is, the input pin isn't floating when the sensor is
not connected.

Oh I didn't know that. So I can eliminate the pull down?
14  Using Arduino / General Electronics / Re: Checking for 12 Volts on: December 01, 2012, 03:14:08 pm
Why not just use a 12V:5V voltage divider, 15K feeding into 10K.

Ok so this will work?



thanks
15  Using Arduino / General Electronics / Checking for 12 Volts on: December 01, 2012, 02:37:41 pm
I need to look for 12v when a switch is pressed. In the schematic the H-12v is my sense line. I'm looking for a high on pin 2 of the Ardurino Mini. Could I get some feedback on this design and is this a good approach for solving the problem?





Thanks in advance.
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