Hello all , I just noticed the spark kick-starter campaign. And i am very much interested in the Spark Core. I have few questions before i go ahead and order few Spark Cores. Can i use Spark Core without Internet, Just as a wifi client to talk to other wifi clients/server in my home network ? O…

the answer is yes. Not directly but yes that feature is possible. I think the relay shield can handle 240v as well. Maybe just not so high a load current. Let me pull up the datasheet and get back to you Something like 6A would be the max. Info: http://docs.spark.io/#/shields SPECIFICATION…

[image] kennethlimcp: the answer is yes. Not directly but yes that feature is possible. I think the relay shield can handle 240v as well. Maybe just not so high a load current. Let me pull up the datasheet and get back to you Something like 6A would be the max. Info: http://docs.spark.i…

There's a discussion just starting now about whether user code should be able to run at bootup even without internet. So the issue for now would be, you need to 1st connect to internet before the code starts running. If you get disconnected after, it's fine. The code still run. But if you don't mi…

[image] zingabuka: Can i use the Spark Core Relay Shield which is 120V to control appliances which are 240V ?I would like to control a motor of 240V , 5AMPs andMotor of 240V, 20 AMP. The relays will not support this amperage, they are rated at 125Vx10A. The application you considering, 240v…

Hi @zingabuka How is the bore-well pump motor controlled today? If it has a relay controlling it already, you should use that. You need a large relay to control a motor at 12-15 running Amps. The start-up current for the motor (called locked-rotor amps or LRA) is going to be much larger than the…

@kennethlimcp Thanks , looking in to it. i can compile and code locally, the reason i want it to work offline, is i am in remote area, so many times there is no electricity and many times there is no internet too. this is why i am looking something completely offline. @deancs Thanks for your in…

@bko Thanks for your reply. bore-well pump motor controlled today by using the Controller provided by the Motor Manufacturer. I have created album of few pics. http://imgur.com/a/U01qs When i Hold the start button for few AMP needed goes to the all the way to the 30 AMP point, is that a LRA ? T…

Thanks for the pictures–that really helps! So you have a 12V DC coil relay with 30A 250V contacts–a very standard part. If you are replacing this entire box, you can get a new relay, but you could also re-use this one. Motors have starting capacitors which in your case looks like they are in that…

Yes you can run the core offline, we’re working to make that easier since the default behavior is to try and be online, but it’s definitely possible. Thanks! David

@bko Thanks , thats a lot new info for me. I am planning to use the Box as it is because there is another circuite inside the box which handles the **Overload cute-off Dry Run cut-off I’ll just take wires from the Green Button which is NCNO button (just learned) and replicate the Button’s scena…

PreSale Questions (Spark Core + Relay Shield)

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kennethlimcp April 13, 2014, 5:03am 21

Good question! I answered it recently so have a read

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PreSale Questions (Spark Core + Relay Shield)

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