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Search: Posts Made By: Dannyx
Forum: General Electronics Technical Discussion 01-03-2021, 10:02 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

No - it wasn't nearly as bad as I was expecting it to be (especially since I'm recently coming from a failed ITE chip replacement on a laptop board). I'd call the pitch "generous", as opposed to that...
Forum: General Electronics Technical Discussion 01-02-2021, 10:19 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I also fixed the STM board which had died. I replaced the main IC and it works, so I now have my own board I can mess around with :D
Forum: General Electronics Technical Discussion 12-24-2020, 06:22 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Talking Re: Remote pump control ideas.

Back on this project, it just dawned on me that I can leave the solar system in place as it is as well, since it doesn't hurt to have an additional backup system in there....not sure where I should...
Forum: General Electronics Technical Discussion 12-15-2020, 11:53 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Thumbs up Re: Remote pump control ideas.

Yes, the chap called me yesterday to let me know of this project and said the power would indeed cycle on and off with the lights, plus these are some simple light fixtures perched on top of some...
Forum: General Electronics Technical Discussion 12-15-2020, 03:24 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Realistically speaking, none - unless I switch the jumper on the STM32 to run on 5v instead of 12v....
Forum: General Electronics Technical Discussion 12-15-2020, 11:15 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Red face Re: Remote pump control ideas.

7805 is too low for the GPON though - only the STM board may run at that. I'm currently running both boards (pump and tank) on 12v using their onboard regs. I also made a mistake regarding the power...
Forum: General Electronics Technical Discussion 12-15-2020, 10:44 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Talking Re: Remote pump control ideas.

Well, just in case someone is curious about the status of this project and how it turned out in the end, last week I managed to install the end product at the actual site and I'm happy to say it...
Forum: General Electronics Technical Discussion 11-03-2020, 02:39 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I left the project running in the shop to see how it goes overnight...*insert jokes about fire and other disasters here* :D

Putting this particular project aside for now, what are some (more or...
Forum: General Electronics Technical Discussion 11-02-2020, 11:46 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Correct, but you know me....I like over-engineering stuff......which is why my projects take so long and I'm not a good designer :D
Forum: General Electronics Technical Discussion 11-02-2020, 10:36 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Yes, outputs can still experience spikes feeding into them, can't they ? That's why I was asking about physically separating the power box from the control box.
Forum: General Electronics Technical Discussion 11-02-2020, 05:40 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Interesting. Dumb question, but does it provide any isolation so the MCU doesn't get zapped in any way ? The optocoupler is straightforward: there's physically no way electricity can jump the gap...
Forum: General Electronics Technical Discussion 11-02-2020, 03:08 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Lightbulb Re: Remote pump control ideas.

Back to protecting my sh!t: can I also use optocouplers the other way around to protect "output" pins too, like so ? I saw this setup somewhere on the web, I tested it for around half and hour and it...
Forum: General Electronics Technical Discussion 10-31-2020, 03:11 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I don't think the regulator can provide the necessary current to do that, plus I risk damaging it more...tempting, but I don't think I'd do it after all :D
Forum: General Electronics Technical Discussion 10-31-2020, 09:55 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I thought of that too, but given the resistance to GND on the RST pin is around 192ohms on the "dead" board and around 7Meg-ohms on the good one, I think something went pop inside the chip.

I...
Forum: General Electronics Technical Discussion 10-31-2020, 04:03 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

So I can just drop a new chip in, provided the STlink is good ? The board's still detected and even goes as far as to upload sketches to it, but doesn't run anything after that, the NRST pin being...
Forum: General Electronics Technical Discussion 10-30-2020, 03:24 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Turning back to the "dead" Nucleo: I'm tempted to get a chip off Ali to fix it....I doubt it's a drop-in replacement though since it's essentially a computer and requires some programming to work...
Forum: General Electronics Technical Discussion 10-29-2020, 01:38 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Thumbs up Re: Remote pump control ideas.

Great pointers as usual. Cheers !

I see now. What is the math behind this ?



Yes - I axed that idea anyway.


Yes, it was getting too complicated indeed, so up on the hill, which is...
Forum: General Electronics Technical Discussion 10-29-2020, 02:15 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Thumbs up Re: Remote pump control ideas.

Nice. Thanks. I was actually thinking of the same setup at some point. So we should scrap the Schmitt triggers entirely ???

Recap: So SW1 is the auxiliary NO contact of the contactor and LP1 is...
Forum: General Electronics Technical Discussion 10-28-2020, 12:42 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

It's a snippet of the KiKad schematic - I cut to only the part of interest which monitors the contact status of the 3 phase contactor. I could upload the whole thing if people really wanted to see...
Forum: General Electronics Technical Discussion 10-28-2020, 10:27 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Thumbs up Re: Remote pump control ideas.

Yes, the board will have its own case.

Good idea about the optoisolators. I'd drop them between the schmitt trigger's output and the Nucleo's pin like this. The Nucleo's pin would then require...
Forum: General Electronics Technical Discussion 10-28-2020, 08:52 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I did some measurements in the meantime and I think it really IS the STM32 that quit.

I removed SB111 and SB177 to separate the STLink and LAN IC's own RST pins from the rest to see if either of...
Forum: General Electronics Technical Discussion 10-28-2020, 05:48 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Just managed to kill one of the boards - the NRST pin is pulled low all the time so the board doesn't initialize....no idea how it happened...
Forum: General Electronics Technical Discussion 10-27-2020, 12:04 PM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Ok, there were two posts there, but I sorted out the first one - the one about the pin numbers (no delete option here unfortunately, since I would've removed that one).

I sort-of worked out the...
Forum: General Electronics Technical Discussion 10-27-2020, 08:19 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

Call me an idiot after not realizing this after so long, but what is the operating voltage of these Nucleo boards ? It's only now I realized the digital pins put out 3.3v. I was afraid I messed...
Forum: General Electronics Technical Discussion 10-27-2020, 06:27 AM
Replies: 178
Views: 4,566
Posted By Dannyx
Re: Remote pump control ideas.

I'm having trouble following the port numbering of the F767. Specifically, I can't figure out which pin the red LED (LD3) is connected to. The example sketch for the Arduino environment, mind you,...
Showing results 1 to 25 of 92

 
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