- WIRES CROSSING WITHOUT MAKING A CONNECTION LOGICWORKS SERIAL
- WIRES CROSSING WITHOUT MAKING A CONNECTION LOGICWORKS SOFTWARE
Again I love the arduino and I'm not trying to state that it's the source of the problem but I want to rule it out. I've purchased another UNO that I will try Monday, but I'm baffled. I also tested with the same value load but a resistive load, same erratic problems.
I also tried a different but similar load inductive load, same problems. Inconsistent routines, but routines none the less. Outputs aren't just fluttered or flashed, or held stuck open, they follow actual routines. The UNO responds in a way that isn't erratic as noise causes, it literally follows it's own logic, or gets screwed up and follows bits and pieces of my logic that I've written. The smaller relay only carries the load of a tiny led pilot light load and a relay coil, it's so small it's inconceivable to imagine that is being affected by flyback. We are talking about the arduino switching one relay, and that relay switching another relay, two sets of dry contacts. So it's obviously two fold, there is a problem with my microcontroller internally and maybe some downstream stuff I need to deal with too. What is consistent and quite constant is that adding any AC coil load such as the solenoid or contactor, pump, severely magnifies that issue. It's completely random, has a mind of its own and has no consistency what-so-ever. Then I will get through a cycle of say 30 button presses, logic works flawlessly. Then randomly it goes through a cycle of bad ones, flickering, misfires, wrong outputs switched etc as described above. I could get 20 program cycles with different inputs (no ac loads) and it works flawlessly. My earlier statement of this never happening on a LV level is false (just dc relays and arduino, real vanilla). However, as far as I can see, the "reset" and I use this term loosely is no way by that I can see caused by a ripple in the dc supply. I get multiple cycles as though it's latching onto the solenoid until the arduino appears to drop all and flicker the outputs on the way out, which I thought was a reset. I get misfires on outputs, followed by erratic output switching, it really takes a mind of it's own, all while keeping the input switch closed. With the power sources provided as such the problems are just as apparent. I left off the 120VAC bus because after that, the pump is the only thing needing AC power. I isolated the AC transformer power to a precision lab grade power source, and I isolated the DC bus to another BK precision dc power supply. So let me describe my latest test results. I understand what you're getting at but I've isolated the power sources as far as I physically could. Everything leads back to these darn solenoid valves! I will try the decoupling circuit when I get some of those components in from mouser. Sometimes causing up to 3 cycles on the solenoid inadvertently until it appears the arduino gets enough ripple to reset itself and de-energize the outputs, so to speak.Īny ideas on how this tiny AC solenoid load is causing these problems? Even being isolated on completely different circuits? I'm confident that the RC snubber has alleviated the problems on that side, and I even put a considerably larger inductive motor load on the contactor and it works flawlessly. Keeping the RC snubber in, and powering the dc bus from a bench supply on House Circuit 1, AC Transformer on House Circuit 2, and the rest of the power for the box on House Circuit 3, the problems are just as apparent if not worse than before.
No resets apparent at all and no half flashes of LEDs on the relay board, it seems perfect. I tried adding an addon Contactor RC Snubber to the coil, no #2 problems with it installed, same as simple LL, LV operation. (IE: Switch + Relay Board + Relay, no Load) Simple DC/AC Relay switching causes no apparent problems.
WIRES CROSSING WITHOUT MAKING A CONNECTION LOGICWORKS SERIAL
This isn’t noticable by eye but by the way it reacts, it drops all outputs in a way (in my limited experience with the arduino) that could only be done by a reset, and prints the serial in a way that could only be done by reset. Sometimes the AC contactor with no load, being switched “off” resets the arduino or ripples the DC supply enough to reset it. The most apparent problems occur when the solenoid is switched off, however the contactor has some less noticeable issues. This time I took it a step further, which I've detailed below. I have to buy some ferrite beads/chokes to play with, but I still wanted to isolate the power sources.
WIRES CROSSING WITHOUT MAKING A CONNECTION LOGICWORKS SOFTWARE
CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.So I did some more testing and tried a few things.
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