Pretty simple, just run switching relays. We use a mix of 5v double pole single throw and double pole double throw. You should drive these via a transistor circuit where 3.3v is turning on the 5v powered relay.
If this is a commercial product, I suggest providing terminals for all power in and power out e.g. active neutral and gnd. Take care with trace widths and separation from themselves (flash over) and also chip level interference.
At the moment we have 21 relays hooked up. Take care when initializing relays to do so only at one time, or init them into the normal state. Init'ing all relays to on for even a split second will draw too much current on the board and cause a ioio reset. Fun to watch, and quite noisy when that happens.
Paul James
---------- Original Message --------
Subject: ioio for 220 volts applications (industrial point of view)
From: Sajad Vafa <[email protected]>
Date: Sun, June 07, 2015 10:13 am
To: [email protected]
Hi there.--I searched in youtube, read the book "OReilly Making Android Accessories with IOIO (2012)" and searched here.No trace of 220 volts applications.I want to build a smart device to be used for 220 volt devices (turn on/off the lamps, motors, etc.).For example a smart house or a smart farm.Most of industrial devices are in the range of 220 volts. Can anyone help me with this or give me a hint?Thanks.
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