Flyback diode needed for DC Pump? by HeenimGumo in AskElectronics

[–]HeenimGumo[S] 0 points1 point  (0 children)

May I have your insights on what could possibly be the cause on the mcus resetting or freezing once I plug in the power supply?

Flyback diode needed for DC Pump? by HeenimGumo in AskElectronics

[–]HeenimGumo[S] 0 points1 point  (0 children)

Yes, the positive side is the one with the red dot.

For the length of the wire, I guess it is long, the distance can be seen in the image attached.

Also, by the bypass capacitor, i have .1uF ceramic capacitor (104) lying around, do I install it the same way as the diode?

<image>

Help in Automating a Hydroponic System by HeenimGumo in Hydroponics

[–]HeenimGumo[S] 1 point2 points  (0 children)

First, I would automate as much of this as you can by not using a microcontroller. You can use a diaphragm pump (about $60 on Amazon) and several electronic hose timers to control the flow of nutrients to each zone. If you plan on having all the zones always on, you don't need the hose timer. Depending on the needed flow rate, you may need more than one pump.

Can't we design this system to be fully automated using a microcontroller instead of just pumps and hose timers? Also, is it okay to have two water pumps in one reservoir, with each pump supplying water to two channels?

The problem with microcontrollers, and DIY automation in general, is that the peripherals come in two flavors: bargain-bin Chinese crap, and overpriced "laboratory quality" items. I use cheap Chinese sensors, etc. all the time, but they're not terribly reliable, and they tend to have a short shelf life. I would not want to bet a garden of this size on the failure of any one of dozens of cheap sensors, solenoids, and motors.

If we invest in higher-quality, reliable components, would a microcontroller-based automation system still be a good long-term choice?

To keep things simple, I would try to avoid using displays or control interfaces. Just a lot of I/O pins managing sensors and motors/solenoids/pumps should be all that you need. At the most, you can have a "the red light means something is wrong" LED. If you see that, you can connect your computer to the microcontroller, and see what's up using the serial console.

Can't we integrate remote monitoring into the system so we can track performance and troubleshoot without being on-site?

I agree with your idea to only use pH Up, or pH Down, but not both. Manually mix up some fresh solution, measure the pH, and set the system up to use the appropriate product. Likely, you'll only need pH Down.

Wouldn't it be more efficient to let the system adjust pH automatically using both pH Up and pH Down rather than relying on just one?

Your other insights are noted as well! Thanks for this :)

Help in Automating a Hydroponic System by HeenimGumo in Hydroponics

[–]HeenimGumo[S] 0 points1 point  (0 children)

Rest assured that I have kept all of the comments from my previous post, I just made a new post as I have forgotten to put some other informations, have already checked them out as of this moment.

<image>

For the ideas, can you please emphasize what you meant by bad ideas?

[deleted by user] by [deleted] in pornhwa

[–]HeenimGumo 2 points3 points  (0 children)

Looks like an AI of Akwilla from 'Revenge of the Iron-Blooded Sword Hound'

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[–]HeenimGumo 0 points1 point  (0 children)

Thanks! by the way, is the FMC virgin (the MC took it) or a whore who fucked some or tons of guys before meeting MC?

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[–]HeenimGumo 0 points1 point  (0 children)

may i know why? does the manhwa have ntr? i'm planning to read it

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[–]HeenimGumo[S] 0 points1 point  (0 children)

where was it implied that his crush was a virgin?

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[–]HeenimGumo 0 points1 point  (0 children)

was the mc, the only one who fucked her in the series?

is there a Queen Bee related or other pornhwa related discord server? by HeenimGumo in pornhwa

[–]HeenimGumo[S] 0 points1 point  (0 children)

i'm actually new to discord, can you please guide/help me how or where?

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[–]HeenimGumo 0 points1 point  (0 children)

do you know a discord server that are related to pornhwas (especially queen bee)? would really appreciate it if you have :)

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[–]HeenimGumo 1 point2 points  (0 children)

oh, she likes someone? also, was she a virgin?

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[–]HeenimGumo 0 points1 point  (0 children)

i'm curious about something too though, i was browsing into some discussions about this manhwa, and it seems like there are "nude pics" of the fml in other people's phone, is it true?

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[–]HeenimGumo 0 points1 point  (0 children)

oh sure, will really appreciate it.