G+_Rud Dog Posted June 16, 2016 Share Posted June 16, 2016 What is the best sensor that can tell when the washer or dryer have completed their cycle. Looking from something for a small iot board. Link to comment Share on other sites More sharing options...
G+_James Scouten Posted June 16, 2016 Share Posted June 16, 2016 One option would be a current shunt to read the power draw another option would be a accelleromoter(SP) that would signal you after x amount of time with no vibrations. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 LIke the idea of monitoring the current now to find a safe plug device to which I can connect some kind of iot board Link to comment Share on other sites More sharing options...
G+_Mark Quinn Posted June 16, 2016 Share Posted June 16, 2016 There was that episode where they covered fiber and that it was used to detect motion under carpet. By placing a small piece fiber optics cable inside the chassis of both washer and dryer should work. Link to comment Share on other sites More sharing options...
G+_Ben Reese Posted June 16, 2016 Share Posted June 16, 2016 Here's some instructions for a power flow meter. I haven't tried it, but looks real interesting! https://openenergymonitor.org/emon/node/58 Link to comment Share on other sites More sharing options...
G+_Jason Eckelstafer Posted June 16, 2016 Share Posted June 16, 2016 I want to do this same thing. I was leaning towards the no vibration after X seconds but I may try Ben's recommendation. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 16, 2016 Share Posted June 16, 2016 Your kids/wife is the best home automation system :P Current sensing is a normal method. just be careful, dealing with mains. Isolation is a major key to safety. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Mark Quinn Great idea but the interface to report back to me would be something out of my expertise but thank you for the suggestion. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Ben Reese This looks promising just so happen to have an Arduino uno laying around. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Eddie Foy my wife wants to know if you are married and does your wife approve your responses:) Yes isolation between low voltage and high voltage is high priority. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Wayne Hobbins The appliances are mighty sitting upon their drawer option with the latest electronics less the notify via phone. So even looking at the appliance with tools in hand would land me in the seat with my wife and lawyer sitting across the table. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Wayne Hobbins Da wife has been showered with every creature comfort know to man. So sir I take me white glove and challenging slap you once from left to right and once in the opposite direction. Having the dog duty sounds promising but think she lacks the attention span. Don't think I could her to count "woofs" <-is that a thing? Anyhow you are trying if that is your best I can expect great things from you my friend. Link to comment Share on other sites More sharing options...
G+_Carlos Silva Posted June 16, 2016 Share Posted June 16, 2016 I like what James Scouten? mentioned, but I just used a ball switch. It only closes the circuit as it shakes /ball is in the middle. I use it to reset a timer. https://www.adafruit.com/products/173 Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 16, 2016 Share Posted June 16, 2016 A photo diode against the finished or on LED/light? Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Eddie Foy Outstanding idea for us geeks but my wife marches to the beat of the non-geek . Even the appearance of a wire running anywhere on her new dryer and washer would launch retaliatory strike. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Carlos Silva The one problem with vibration is the newer appliance don't have much if any so guess it would depend on the sensitivity of the sensor. Secondly would have to devise a methond to avoid false triggers. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 16, 2016 Share Posted June 16, 2016 tap off the the led/light internally. Now you have a solid signal Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 16, 2016 Share Posted June 16, 2016 Both of mine beep when done. Could use that. a little bandpass filter so its in tune just with the beep rejecting other sounds. Link to comment Share on other sites More sharing options...
G+_Jason Eckelstafer Posted June 16, 2016 Share Posted June 16, 2016 I am planning the vibration method right now but the soak cycle is stumping me. I was just planning to have it send a text if no vibration was detected for 30 seconds but that damn soak cycle. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Eddie Foy Now all that needs doing now, have it connect to iot board and use wifi to send ITTT so my cell or my wife's cell phone can indicate drying or washing complete. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted June 16, 2016 Share Posted June 16, 2016 The agitation and spin cycles will have different vibrations, let the spin cycle vibes trigger the 'look for it to stop' stage. Another option could be a tach solution Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 I did not know this about clip on CT senors looks like I will need the diode included unit and hope it never fails and I have an open circuit on the secondary. In general, a CT must never be open-circuited once it's attached to a current-carrying conductor. A CT is potentially dangerous if open-circuited. If open-circuited with current flowing in the primary, the transformer secondary will attempt to continue driving current into what is effectively an infinite impedance. This will produce a high and potentially dangerous voltage across the secondary [1] Some CT's have built-in protection. Some have protective Zener diodes as is the case with the SCT-013-000 recommended for use in this project. If the CT is of the 'voltage output' type, it has a built in burden resistor. Thus, it cannot be open-circuited. Link to comment Share on other sites More sharing options...
G+_Carlos Silva Posted June 16, 2016 Share Posted June 16, 2016 Rud Dog the way I did it was any switch resets a five minute timer.sloppy coding but it works. You can buy those switches in very or mildly sensitive. My washer is old so you could race that thing if it weren't in a closet Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 Carlos Silva rounding turn 4 in the Agitator. Sloppy works. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted June 16, 2016 Author Share Posted June 16, 2016 So have to wonder how do you conduct testing with the induction type CT sensors? Is a current meter considered enough to avoid causing fire and smoke. Link to comment Share on other sites More sharing options...
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