http://forums.leaflabs.com/topic.php?id=1779 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:19:22 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1779#post-11002 Thu, 31 May 2012 11:52:08 +0000 pici 11002@http://forums.leaflabs.com/ <p><a href="http://arduino-info.wikispaces.com/RelayIsolation" rel="nofollow">http://arduino-info.wikispaces.com/RelayIsolation</a><br /> May be this helps....</p> <p>regards pici </p> http://forums.leaflabs.com/topic.php?id=1779#post-10842 Thu, 24 May 2012 10:25:19 +0000 cosminnci 10842@http://forums.leaflabs.com/ <p>I have a 12V transformer rectifier bridge 7812 ,7805 and 2 electrolytic caps.<br /> I checked the supply with a dso nano looks smooth, it drops about 0.2v when the relay is on.<br /> we tried activating the interrupt in the main loop too, no changes.<br /> it must be somme interference,<br /> I will rebuild the cable and the connections.</p> <p>regards,<br /> Cosmin </p> http://forums.leaflabs.com/topic.php?id=1779#post-10829 Wed, 23 May 2012 16:22:35 +0000 pici 10829@http://forums.leaflabs.com/ <p>- what power source you use for the relay, is it stabilized ?<br /> - is the irp acitvated after relais activation ?<br /> - can you monitor the power source with a osci ?</p> <p>looks like a problem with a dirty power source.<br /> try to stabilize the pwr source with a capacitor, may be 100yF. </p> <p>regards pici </p> http://forums.leaflabs.com/topic.php?id=1779#post-10827 Wed, 23 May 2012 13:22:09 +0000 cosminnci 10827@http://forums.leaflabs.com/ <p>I tried with INPUT_PULLUP and RISING, the functionality is about the same,<br /> when the maple is powered from battery it works ok, when powered from the same supply as the relay the interrupt fires at same rate as enabling the relay.<br /> what is the safer for button with interrupt on 10cm rainbow cable the pullup or the pulldown, I mean for protection against interferences.</p> <p>regards,<br /> Cosmin </p> http://forums.leaflabs.com/topic.php?id=1779#post-10817 Tue, 22 May 2012 18:40:20 +0000 mbolivar 10817@http://forums.leaflabs.com/ <blockquote><p> just one thing, you're trying to detect a falling edge with a pull-down resistor? It should be a rising edge, or a pull-up resistor...</p> </blockquote> <p>I agree with blackswords (I didn't read your first post carefully, and missed that you were using a pulldown). If you have an external pulldown (and <code>INPUT</code> mode), then you want <code>RISING</code>, not <code>FALLING</code>.</p> <p>Though it's still a good idea to check if just using the internal pullups/pulldowns won't work for you. </p> http://forums.leaflabs.com/topic.php?id=1779#post-10814 Tue, 22 May 2012 12:53:14 +0000 pici 10814@http://forums.leaflabs.com/ <p>ups, i am not sure. Does it still fire when you use INPUT_PULLUP mode ?<br /> The only thing i can imagine so far is when your input is pulled down - there could be any strange emitting source<br /> that could cause your input to peak high for a short time. So the time delay in the irq routine should work as a filter.<br /> May be you can adjust the time delay.</p> <p>I figured that out when i was developing my remote controlled power line. There are a lot of transmitting sources in the air<br /> like RC, mobile, etc.<br /> So the best way would be to check the input with a oscilloscope or dso to figure out the shape of the signal.</p> <p>But i think it shouldn't happen with the internal pullup mode so u need no external resistor.</p> <p>regards pici </p> http://forums.leaflabs.com/topic.php?id=1779#post-10813 Tue, 22 May 2012 12:51:51 +0000 blackswords 10813@http://forums.leaflabs.com/ <p>just one thing, you're trying to detect a falling edge with a pull-down resistor? It should be a rising edge, or a pull-up resistor... </p> http://forums.leaflabs.com/topic.php?id=1779#post-10812 Tue, 22 May 2012 12:45:20 +0000 mbolivar 10812@http://forums.leaflabs.com/ <p>Since you want the interrupt to fire on falling edges, try using <code>INPUT_PULLUP</code> instead of <code>INPUT</code> in your call to <code>pinMode()</code>. </p> http://forums.leaflabs.com/topic.php?id=1779#post-10811 Tue, 22 May 2012 11:06:25 +0000 cosminnci 10811@http://forums.leaflabs.com/ <p>the debouncing is ok, it will help but for now the interrupt fires without any button press, only the relay is commanded.<br /> what is better to have buttons pulled up all times and on contact goes 0 or oposet?<br /> regards,<br /> Cosmin </p> http://forums.leaflabs.com/topic.php?id=1779#post-10810 Tue, 22 May 2012 09:57:12 +0000 pici 10810@http://forums.leaflabs.com/ <p>#define BUTTON_MASTER xxyourpin</p> <p>// button state<br /> volatile int buttonMasterState = LOW;</p> <p>void __button_master_irq()<br /> {<br /> static unsigned long last_master_irq = 0;<br /> unsigned long irq_time = millis();<br /> // If interrupts come faster than 100ms, assume it's a bounce and ignore<br /> if (irq_time - last_master_irq &gt; 200)<br /> {<br /> buttonMasterState = !buttonMasterState;<br /> digitalWrite( LED_MASTER, !buttonMasterState);<br /> fs20_cancel = true;</p> <p> }<br /> last_master_irq = irq_time;<br /> }</p> <p>void setup()<br /> {<br /> // define the button pin's, pullup to 3.3 V<br /> pinMode( BUTTON_MASTER, INPUT_PULLUP );</p> <p> attachInterrupt (BUTTON_MASTER, __button_master_irq, CHANGE);</p> <p>}</p> <p>Hi Cosmin,<br /> am not quite sure if this is you are looking for.<br /> For my project it works pretty good. I think you have to debounce your button.<br /> best regards </p> http://forums.leaflabs.com/topic.php?id=1779#post-10808 Tue, 22 May 2012 09:02:00 +0000 cosminnci 10808@http://forums.leaflabs.com/ <p>it is more complex but we tried with simple example and same behavior, we tested with pin38 the onboard button and it works.<br /> could it be of the wires? somme kind of interference?</p> <p>#define PIN_BUTTON_STOP 38</p> <p>boolean trigg = false;</p> <p>void isr_stopProgram(){<br /> trigg = !trigg;<br /> }</p> <p>void setup(){<br /> pinMode( PIN_BUTTON_STOP, INPUT );<br /> attachInterrupt( PIN_BUTTON_STOP, isr_stopProgram, FALLING );<br /> }</p> <p>void loop(){<br /> SerialUSB.println( trigg );<br /> delay(1000);<br /> } </p> http://forums.leaflabs.com/topic.php?id=1779#post-10807 Tue, 22 May 2012 08:14:10 +0000 pici 10807@http://forums.leaflabs.com/ <p>can you send your code or part of it ? </p> http://forums.leaflabs.com/topic.php?id=1779#post-10806 Tue, 22 May 2012 07:24:52 +0000 cosminnci 10806@http://forums.leaflabs.com/ <p>I use a maple ret5 with an 10k pull down resistor and a button when pressed connects to +5v, on another pin I use a relay board, with transistor and diode, this switches on and off a 220V solenoid, somehow the interrupt fires at every switch, rarely misses.</p> <p>if I completly disconnect the button it works ok.<br /> how can I debug this?<br /> do I need somme hardware changes?</p> <p>regards,<br /> Cosmin </p>