Post ArazJbcbUr3ioB1s5A by mmu_man@m.g3l.org
(DIR) More posts by mmu_man@m.g3l.org
(DIR) Post #AransLFn94EKjI9jP6 by foone@digipres.club
2025-02-28T23:32:07Z
1 likes, 0 repeats
When I win the lottery and become a billionaire I'm gonna set up an organization for one purpose and one purpose only:To ensure the availability of cheap 5v microcontrollers
(DIR) Post #Arao44RzRexU5eSEqm by neko68k@digipres.club
2025-02-28T23:34:02Z
0 likes, 0 repeats
@foone oh! Do fpgas too!
(DIR) Post #AraoMOE6emqOdYhBvU by foone@digipres.club
2025-02-28T23:37:31Z
0 likes, 1 repeats
this rant inspired by the sickos who cloned an Arduino Uno, a famously 5v board, but made it 3.3vand the even worse sicko who snuck one of these fuckers into my microcontroller box
(DIR) Post #AraoPdkfOJJtekTX5E by TomF@mastodon.gamedev.place
2025-02-28T23:37:48Z
0 likes, 0 repeats
@foone Check the data sheets. A surprising number of them nominally run at lower voltage, but will tolerate 5v quite happily.
(DIR) Post #AraoSK88ncjPfcjcie by foone@digipres.club
2025-02-28T23:38:23Z
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I should design an RP2040 board which is just the RP2040 and a fuck ton of level shifters, making it effectively 5v
(DIR) Post #AraoXblSfBTvoGe8uG by foone@digipres.club
2025-02-28T23:39:38Z
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and yes, yes, YES I know a lot of 3.3v boards are 5v tolerant.I don't want "tolerant", I want "is 5v". The whole reason I'm using 5v in the first place is because I'm dealing with other 5v hardware, and most of it is old and not very tolerant itself.
(DIR) Post #AraoaZRdkCxLU4muYa by darkling@mstdn.social
2025-02-28T23:39:46Z
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@foone 5v, or flight level 450.
(DIR) Post #AraocpWQwLyZvU6iSu by foone@digipres.club
2025-02-28T23:39:58Z
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my life already has enough headaches without adding "it'll probably work!" 5v tolerance to my plate
(DIR) Post #AraoqApV1xcFm6O7V2 by foone@digipres.club
2025-02-28T23:42:59Z
0 likes, 0 repeats
save me Arudino Diecimila!
(DIR) Post #AraotWv1MPcf9SZSz2 by foo@fosstodon.org
2025-02-28T23:43:23Z
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@foone Last year I coined the term "level shifter of shame" in response to yet another "don't worry, it's tolerant of 3.3v" being not. https://fosstodon.org/@foo/113506886456561426
(DIR) Post #Arap6C08RV9A2e08RM by dx@social.ridetrans.it
2025-02-28T23:45:51Z
0 likes, 0 repeats
@foone Is it running at 8mHz too?
(DIR) Post #ArapRhrPBanqvsB02S by rwmtinkywinky@mastodon.nz
2025-02-28T23:49:43Z
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@foone Years ago I considered doing the same thing for a Atmel XMEGA in Arduino form factor. I just felt many good bidirectional level shifters and/or any Arduino support was expensive and slightly annoying. Better to just use a 5V MCU.
(DIR) Post #ArapUbW1EUeI7fYSh6 by jpm@aus.social
2025-02-28T23:50:14Z
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@foone oh that reminds me, I need to build the 2nd prototype of my “Shifty PS/2” (level converter and dc-dc boost converter). I’ve got one with your name on it if you want, just let me know a shipping address.
(DIR) Post #Arapirl9dO0sYbR212 by axel_hartmann@digitalcourage.social
2025-02-28T23:52:49Z
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@foone - is there a common set of symbols to use on a board or a set of headers to denote native and tolerated voltage-levels?Or maybe sth more subtle like the shape of the pads?
(DIR) Post #ArarnMt62hDaALQMzY by JoshuaACNewman@xeno.glyphpress.com
2025-03-01T00:15:56Z
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@foone This is a great idea. I’m kind of doing that myself right now.
(DIR) Post #ArazJbcbUr3ioB1s5A by mmu_man@m.g3l.org
2025-03-01T00:22:18Z
0 likes, 0 repeats
@foone and FPGAs, we need FPGAs!
(DIR) Post #ArazRTuu1jepEFLNM8 by brouhaha@mastodon.social
2025-03-01T01:41:42Z
0 likes, 0 repeats
@foone in DIP packages, as FSM intended
(DIR) Post #ArazzUdRrVpJIqOiS8 by foone@digipres.club
2025-03-01T01:47:55Z
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@brouhaha of course
(DIR) Post #Arb91kFjfONjuGSG3c by vramvoolenaar@mastodon.nlmakers.ca
2025-03-01T03:29:06Z
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@foone It can be 5v for a little while.
(DIR) Post #ArbMZ1mWoXtpEQzgwK by foone@digipres.club
2025-03-01T06:00:37Z
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@Jhynjhiruu oh neat! is it an open source design, or something you made for yourself?
(DIR) Post #Arbd688LojDbks0Xjs by byteborg@chaos.social
2025-03-01T09:06:02Z
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@fooneAll boards are 5V tolerant, for a short amount of time 😸I feel you.
(DIR) Post #ArbxFYcYhp8RapuTWS by Suiseiseki@freesoftwareextremist.com
2025-03-01T12:52:18.734722Z
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@foone Arduino's are still acceptable available and not too expensive either.I would love 3.3V arudino's, but those are expensive - the cheapest way to get a 3.3V arduino is to 3.3V mod one (and leave it overclocked, as there's nothing better than going outside the manufacturer ratings).