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How to override internal pull-up resistor in an Arduino (FAN_TACH + Arduino)

2021.10.16 21:40 bigh-aus How to override internal pull-up resistor in an Arduino (FAN_TACH + Arduino)

How to override internal pull-up resistor in an Arduino (FAN_TACH + Arduino) Hi Everyone,
Apologies if this is a really easy question, but I'm still a newbie.
I'm trying to build a 6 channel fan controlleproxy using a Mega 2560. I'm running into a problem as I need to use all 6 available hardware interrupts to read the fan tach signal.
For the first 4 channels, no problem as I was able to work out this circuit that works well for the delta server fans I have (circuit A).
I'm having trouble dealing with using pins 20 and 21 for reading interrupts as they have internal 10ohm resistors that as far as I can find, aren't able to be disabled (circuit B).
Can someone suggest how I could calculate the values for R4, R5, R6 that would give me the equivalent of Circuit A. Googling found some suggestions of "overriding the pull-up" but I don't understand how you could do that in hardware? I also added some visual options in Circuit B to assist with discussion - as I could see external pull-up or pull-down resistors might not be necessary.
https://preview.redd.it/y4ixqyrpivt71.png?width=858&format=png&auto=webp&s=39bd3c790775a165dd4f41eeef3211770306d3a1
submitted by bigh-aus to AskElectronics [link] [comments]


2021.10.16 21:40 yellodesire THE 3 STAGES OF SEMEN RETENTION! (Watch Out For God Mode...)

THE 3 STAGES OF SEMEN RETENTION! (Watch Out For God Mode...) submitted by yellodesire to AntiPMO [link] [comments]


2021.10.16 21:40 ohsnapitsAntman Me and the boys on Saturday nigh.

Me and the boys on Saturday nigh. submitted by ohsnapitsAntman to Spiderman [link] [comments]


2021.10.16 21:40 VinylizedToxicity DISCUSSION: Do you guys think Carnival of Light should be released?

What is the song?: For those who don't know, Carnival of Light is an unreleased lost Beatles song recorded sometime in 1967, either during the Sgt. Peppers or the Magical Mystery Tour sessions. Paul was asked to make the song for an event (it's been a while since I've heard the full story, so I forget the name of the event/the person who ran it and asked Paul for the song.) The track is said to be 14 minutes long, which would make it the longest Beatles song ever recorded (if you're not including the lost 28 minute-long Helter Skelter take). The song is said to be the most avant-garde Beatles song by the people who have heard it, and is essentially more avant-garde and experimental than Revolution 9. Its actually compared to it a lot, with people saying it's like a longer version of said song. When it was played at the event, sources say people were very underwhelmed. I don't think they were expecting a song of that nature.
Why is it currently unreleased?: Paul wanted to add the song to Anthology 2 back in 1996 when he unearthed the track, but the remaining Beatles and the estate of Lennon I guess didn't want it to be released. If you didn't know, for a Beatles song to be released on a record, all alive Beatles and the estates of the dead members would have to agree to it. Legally, Paul can't release the song unless everyone in those boats agree. Paul wants the song to be released because it would prove that he was in fact, the most experimental Beatle and didn't make just "Granny shit".
Extra info about the song: On the album Love, which is a compilation of songs used for the Cirque du Solei show of the same name, the version of Lady Madonna used for it has three seconds of the song used in the beginning. At the end of the version of Being For the Benefit of Mr. Kite, a few seconds of the track can be heard at the end. Fake leaks of the song have been uploaded to YouTube as with all things that are lost media, but they're sadly all fake. A close recreation of the song was uploaded to YouTube, and I'll link it here.
Current status on the song: As of right now, Carnival of Light is still lost media. Rumors about it appearing on the Sgt. Peppers 50th Anniversary release were gaining a small bit of traction before it came out, and of course, it wasn't on there. We'll most likely see it at some point, be it a deluxe/anniversary edition release of Magical Mystery Tour or a 60th for Peppers, or the song just dropping as a single, only time will tell.
Do I think it should be released?: Absolutely. Not only is it a crucial piece of the Beatles history as it's apparently the most avant-garde song by them and signified their shift to more edgy, experimental and wild material, but it would just be nice to have a song like Carnival of Light out there for the public and Beatle fans.
submitted by VinylizedToxicity to beatles [link] [comments]


2021.10.16 21:40 nehwsekuntekop Pedro Sánchez booed on Spain's National Day, with shouts to resign

Pedro Sánchez booed on Spain's National Day, with shouts to resign submitted by nehwsekuntekop to PSOE [link] [comments]


2021.10.16 21:40 Junior_Cow_343 Average parking in NZ

Average parking in NZ submitted by Junior_Cow_343 to AveragePicsOfNZ [link] [comments]


2021.10.16 21:40 Mother-Key582 Did Bea really “hate” Betty?

It’s so sad how people think she hated Betty. I wish Bea could’ve told her side of it but we may never know.
Not every costar is Buddy Buddy. And I normally just like to go home after work and not do much. I have my close friends but I never hang out with any coworkers. Vivian Vance and Bill Frawley from I Love Lucy hated each other off-screen. But their intense dislike and colorful remarks brought amazing on screen chemistry and realism to their characters and I REALLY hope they sort of realized that deep down. But I also heard Vance would rub it in Frawley’s face that he didn’t win one Emmy and she did. So rude!! How did Miss Ball not call her out on that?
But I can’t stand all these sources that say Bea HATED Betty. Betty was way more of an extroverted television presence while Bea was way more of a stage actress and more quiet and shy. I can totally understand their differences.
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2021.10.16 21:40 bringbackoldreddit1 I want to piss on Ronald Reagan's grave

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2021.10.16 21:40 ChocoCharaDreemurr I got a bouquet shipped to my house with a note saying "to represent our future".

All the flowers were lilies.
submitted by ChocoCharaDreemurr to TwoSentenceHorror [link] [comments]


2021.10.16 21:40 Pablopotopilucho Hagamos protesta para que mejoren esta arma, es una vergüenza como legendaria, de hecho hay muchas epicas que superan el diseño, asi como mejoraron el dlq holidays y lo hicieron evolutivo, podrian hacer lo mismo con esta 👀

Hagamos protesta para que mejoren esta arma, es una vergüenza como legendaria, de hecho hay muchas epicas que superan el diseño, asi como mejoraron el dlq holidays y lo hicieron evolutivo, podrian hacer lo mismo con esta 👀 submitted by Pablopotopilucho to CallofDutyMobileES [link] [comments]


2021.10.16 21:40 Strikethat4 "Of course I masterminded this game you fucking pigshits!" [Mastermind edit]

submitted by Strikethat4 to danganronpa [link] [comments]


2021.10.16 21:40 Broccoli_Is_g0od_b4d Looking to try cuatom eartips for galaxy buds 2019

Any recommendations?
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2021.10.16 21:40 barks_like_a_duck First Room

First Room submitted by barks_like_a_duck to Araneum [link] [comments]


2021.10.16 21:40 Santosh7373 Battinson looks Great as Batman and Bruce Wayne

Battinson looks Great as Batman and Bruce Wayne submitted by Santosh7373 to DC_Cinematic [link] [comments]


2021.10.16 21:40 PepperLuna01 Tea

Can I make tea with fresh shrooms without lemon or ginger? I don’t care about the taste, just want to know how to boil them correctly. Thanks!
submitted by PepperLuna01 to MagicMushroomsUK [link] [comments]


2021.10.16 21:40 HaTeThaT187 Any Suggestions for an Rta Team? I dont have enough luck to get meta units..

Any Suggestions for an Rta Team? I dont have enough luck to get meta units.. submitted by HaTeThaT187 to summonerswar [link] [comments]


2021.10.16 21:40 AutoNewspaperAdmin [Top Stories] - Vince Neil hurt in fall from stage at Tennessee rock festival | CNN

[Top Stories] - Vince Neil hurt in fall from stage at Tennessee rock festival | CNN submitted by AutoNewspaperAdmin to AutoNewspaper [link] [comments]


2021.10.16 21:40 SabaticJungleSocks I got it bois!! I sacrificed my Hu Tao but who cares lol!! Finally won a weapon 50/50, I’m so happy now :D

I got it bois!! I sacrificed my Hu Tao but who cares lol!! Finally won a weapon 50/50, I’m so happy now :D submitted by SabaticJungleSocks to childemains [link] [comments]


2021.10.16 21:40 old_dirty_nwah Is graves mid here to stay or is he flavor of the month?

Is this champion worth maining in low elo? It seems with this champion all you have to is auto attack and occasionally press q. Plus he's never banned in low elo. Will he be nerfed back into the jungle.I already lost my original main to Karthus and it's led to a downward spiral of depression. I don't want it to happen again.
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2021.10.16 21:40 We5ley5nipe5 I must say.. pretty proud of my collection.

I must say.. pretty proud of my collection. submitted by We5ley5nipe5 to PS3 [link] [comments]


2021.10.16 21:40 YextFE hmmm

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2021.10.16 21:40 a254214712 Occult spells

Occult spells submitted by a254214712 to EsotericOccult [link] [comments]


2021.10.16 21:40 Fried_Tortilla me or someone else

me or someone else submitted by Fried_Tortilla to memes [link] [comments]


2021.10.16 21:40 ioboy880 Se alguem quiser bater uma enquanto a gente troca umas gostosas o meu kik é drassb

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2021.10.16 21:40 ComradeHavoc Fixed the fixed.

Fixed the fixed. submitted by ComradeHavoc to TheLeftCantMeme [link] [comments]


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