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1. jacqueline 🌟 (jacqueline@chaos.social)'s status on Tuesday, 10-Sep-2024 16:30:48 JST jacqueline 🌟

   poking through the reform next sources, and there's some really nice stuff going on in there https://source.mnt.re/reform/reform-next/

   • ln (ln@chaos.social)'s status on Tuesday, 10-Sep-2024 16:30:44 JST ln

     in reply to

     • Graham Sutherland / Polynomial

     @gsuberland @jacqueline oh also another big consideration was how many pins have to go to the mobo. i would've use an mspm0 to do all the bat management per board with some protocol over i2c or uart or whatevs then, but complexity and even more mcus aren't too great.

     but yeah, running the packs in parallel or switchable was an idea so that even different chemistries could be used, technically.
     i only did the design for now and still haven't tested it myself

   • ln (ln@chaos.social)'s status on Tuesday, 10-Sep-2024 16:30:45 JST ln

     in reply to

     • Graham Sutherland / Polynomial

     @gsuberland @jacqueline that's on the rev0 tho where i didn't find the new bms ic tho, the latest uses a balancer with integrated high-side drivers instead of low-side and discrete FETs.
     so it's a bit more cost-optimized/ease of assembly vs. elegant.

     otoh i should also just build a board with that solution just to compare, ya never know.

     also feel free to poke me with any battery pack questions or mistakes u spot :3

     minute repeated this.
   • Graham Sutherland / Polynomial (gsuberland@chaos.social)'s status on Tuesday, 10-Sep-2024 16:30:46 JST Graham Sutherland / Polynomial

     in reply to

     @jacqueline the TPS25948 chip they're using for doing the parallel battery stuff is a cool find. it's an 8A efuse with all the typical trimmings like OVLO and UVLO, but the linear FET pair they use for inrush control and active current limiting also doubles up as an ideal diode OR so you can run them in parallel.

   • jacqueline 🌟 (jacqueline@chaos.social)'s status on Tuesday, 10-Sep-2024 16:30:47 JST jacqueline 🌟

     in reply to

     the battery packs look super robust compared to reform classic. clearly a lot of lessons learned. they put a whole 4S charger in each of the two packs!

   • minute (mntmn@mastodon.social)'s status on Tuesday, 10-Sep-2024 16:33:58 JST minute

     in reply to

     @jacqueline warning btw there's still little bugs everywhere, so if you find stuff and are like "this looks weird" it probably is :D there are a few bodges in the prototype. but it's going into the fixing & polishing phase now.

   • minute (mntmn@mastodon.social)'s status on Tuesday, 10-Sep-2024 16:34:55 JST minute

     in reply to

     • josch

     @josch @jacqueline yeah we talked about that yesterday, lets see if we can get a grid of threads in there

   • josch (josch@floss.social)'s status on Tuesday, 10-Sep-2024 16:34:57 JST josch

     in reply to

     • minute

     @jacqueline @mntmn Right now, the bottom seems to be completely flat on the inside. This means that I'd probably glue or tape things to it to keep them in place. I wonder if the Next body should come with anything that helps in attaching new mods to the bottom (like some protrusions and holes for M2 screws or the like). Or whether having the bottom anything but plain flat would mainly hinder creativity... 🤔

   • jacqueline 🌟 (jacqueline@chaos.social)'s status on Tuesday, 10-Sep-2024 16:34:58 JST jacqueline 🌟

     in reply to

     lots of room to put shit under the keyboard too i think, so long as you keep under the height allowance

   • jacqueline 🌟 (jacqueline@chaos.social)'s status on Tuesday, 10-Sep-2024 16:34:59 JST jacqueline 🌟

     in reply to

     there's also this cute little expansion module that sits in the back of the device body.

     the stock module give you wifi+bt, but look at all that room for activities! and the connector already gives you sd, uart, usb, 3v3 and 5v lines!

   • minute (mntmn@mastodon.social)'s status on Tuesday, 10-Sep-2024 16:52:31 JST minute

     in reply to

     • josch

     @jacqueline @josch the novena had this IIRC

   • jacqueline 🌟 (jacqueline@chaos.social)'s status on Tuesday, 10-Sep-2024 16:52:32 JST jacqueline 🌟

     in reply to

     • minute
     • josch

     @mntmn @josch yes yes yes that would rule so much

   • minute (mntmn@mastodon.social)'s status on Wednesday, 11-Sep-2024 04:42:38 JST minute

     in reply to

     • external quantum efficiency
     • josch

     @eqe @jacqueline @josch yesssss. the novena was so ahead of its time

   • external quantum efficiency (eqe@aleph.land)'s status on Wednesday, 11-Sep-2024 04:42:39 JST external quantum efficiency

     in reply to

     • minute
     • josch

     @mntmn @jacqueline @josch the Peek Array! https://www.crowdsupply.com/sutajio-kosagi/novena/updates/1484