@mntmn@mastodon.social
@mntmn@mastodon.social avatar

mntmn

@mntmn@mastodon.social

CEO of MNT Research. OSHW laptop MNT Reform: https://mntre.com | https://shop.mntre.com | FOSS, ARM, OSHW, FPGA, Amiga, RISC-V | batcave, cyberpunk, industrial, synth/darkwave | non-binary, queer, vegan, sober

This profile is from a federated server and may be incomplete. Browse more on the original instance.

mntmn, to random
@mntmn@mastodon.social avatar

sooo the qualcomm qcs6490 has at least the following names, all for the same chip (?):

  • QCS6490
  • Yupik
  • SM7325
  • Snapdragon 7c+ Gen 3
  • Snapdragon 778G

now my question is: why

mntmn,
@mntmn@mastodon.social avatar

@z3ntu ahh, thanks for all the detailed explanation!

mntmn, to random
@mntmn@mastodon.social avatar

did you ever encounter some RP2040 GPIOs just not... working? i.e. you tell it to output a logic high level, but the actual pin is close to GND? we have some pocket keyboards that are like that. there is no short on the board. so i'm wondering how this can happen. damage during soldering, handling?

mntmn,
@mntmn@mastodon.social avatar

@timonsku i think keyswitches were handsoldered by pcbway. maybe there was damage during that process/handling

mntmn,
@mntmn@mastodon.social avatar

@Laberpferd @timonsku with my fluke, ohmmeter, i measure a resistance to GND on the broken pins, varying from like 10k to 10M, and on the working pins there is no measurable resistance

mntmn,
@mntmn@mastodon.social avatar

@Laberpferd @timonsku ah, on one board there is actually a short to GND (1.7 ohms) on that pin

mntmn,
@mntmn@mastodon.social avatar

@timonsku @Laberpferd diode measurement from GND to the pins is actually fine hm

mntmn,
@mntmn@mastodon.social avatar

@funkylab @Laberpferd @timonsku so far i think these keyboards are DOA, it doesn't happen because of continued use. assembled, flashed, some columns not working--dead pins.

the circuit is like: column GPIO outputs logical 1 (3.3V). on closed switch, this connects through a diode to a row GPIO input. on the broken boards, one or two of the column GPIO outputs cannot produce a logical 1.

mntmn,
@mntmn@mastodon.social avatar

@funkylab @Laberpferd @timonsku i just desoldered the first chip from a board. the problem is not on the board itself, there are no shorts. so it is the chip

mntmn,
@mntmn@mastodon.social avatar

@funkylab @Laberpferd @timonsku flipped desoldered rp2040 over. multimeter beeper from pin 8 (the output) to GND pad beeps (1 ohm). chip is damaged

mntmn,
@mntmn@mastodon.social avatar

@azonenberg @funkylab @Laberpferd @timonsku oh yes, that would be mega awesome. lets do it!

gkrnours, to random
@gkrnours@mastodon.gamedev.place avatar

@mntmn hi! I noticed the crowdsupply page say the hyper version of the mnt reform ship end of the month while the standard version ship next month. I remember reading it was the opposite at one point. Is there a chance I get the hyper in june?
Also I was wondering if there are info about using LTE modem along the pocket or if that's a bit early. Like I was worried about crowd supply saying their modules are north america certified, I found the Quectel EM060K-GL but does it fit and have driver?

mntmn,
@mntmn@mastodon.social avatar

@gkrnours for europe (is that what you need), buy em06-e for example from seeed or radxa or aliexpress, it works fine.

hyper and standard pocket reform are the other way around. hyper is blocked on the printed handbook to be finished, which will take another 2-3 weeks.

mntmn,
@mntmn@mastodon.social avatar

@gkrnours i bought one from aliexpress to test and that worked fine, YMMV of course.

mntmn, to random
@mntmn@mastodon.social avatar

here are @theawesomerandomness (first pic) and @liaizon (second pic) assembling and testing your MNT Pocket Reforms

liaizon wirking at the test/install station

mntmn,
@mntmn@mastodon.social avatar

@theawesomerandomness @liaizon hey looks like i was also around

mntmn, to random
@mntmn@mastodon.social avatar

there is a thing that's more disk space hungry than xilinx vivado and it is thundercomm/qualcomm's sdk manager

mntmn,
@mntmn@mastodon.social avatar

also interesting that thundercomm is using gitlab community edition for storing all the secret sauces 🙃

mntmn, to random
@mntmn@mastodon.social avatar

MNT Pocket Reforms are being assembled

mntmn,
@mntmn@mastodon.social avatar

@qwertziop we are allowed to do it after the crowdfunding devices have been shipped!

mntmn, to random
@mntmn@mastodon.social avatar

der EU-wahlomat ist on (wahl-o-mat.de), und ich hoffe ihr beteiligt euch an den EU-wahlen (wenn möglich) :3

mntmn, to random
@mntmn@mastodon.social avatar

because debian unstable can't cross-build arm64 on x86/amd64 at the moment, CI is building reform-debian-packages natively on the RK3588 MNT Reform that i'm also using to watch voyager at the same time, because it is feierabend

mntmn,
@mntmn@mastodon.social avatar

brrrr

mntmn, to random
@mntmn@mastodon.social avatar

we have fully caught up with ZZ9000 (our Amiga multi-function graphics card) order fulfillment.

liaizon, to berlin
@liaizon@wake.st avatar

Just got an art studio in this building in . Excited to have a place to make a mess here!

mntmn,
@mntmn@mastodon.social avatar

@liaizon looks cool!

mntmn, to random
@mntmn@mastodon.social avatar

OpenBSD driver for MNT Reform's LPC System Controller (only for original i.MX8MQ): https://community.mnt.re/t/reform-lpc-driver-for-openbsd/2053

  • All
  • Subscribed
  • Moderated
  • Favorites
  • •
  • JUstTest
  • kavyap
  • DreamBathrooms
  • thenastyranch
  • magazineikmin
  • tacticalgear
  • khanakhh
  • Youngstown
  • mdbf
  • slotface
  • rosin
  • everett
  • ngwrru68w68
  • Durango
  • megavids
  • InstantRegret
  • cubers
  • GTA5RPClips
  • cisconetworking
  • ethstaker
  • osvaldo12
  • modclub
  • normalnudes
  • provamag3
  • tester
  • anitta
  • Leos
  • lostlight
  • All magazines
    •