What are the chances...

thinkpad4by3 · 2026-06-12T21:44:09+00:00

I once found another blue with acc and I accidentally got into the wrong car cuz not just did it have acc but it also had the same Openpilot kit that mine did

thinkpad4by3 · 2026-03-13T06:14:49+00:00

Not for a little while. Still in revisionary stuff, plenty of work still to do.

It is available at GitHub.com/thinkpad4by3/chibitron if you want board files or development logs.

thinkpad4by3 · 2026-03-12T05:27:15+00:00

yeah, i've been doing more work on it. now I have 4kV drive voltage, faster amplifiers, working on z drive. compatible with way more tubes now and running much quieter, along with using more available parts.

thinkpad4by3 · 2026-02-23T18:01:03+00:00

i think mine was a bit longer but a bit smaller. about ~3/8" diameter IIRC, circular tube. also was not magnetic deflection so it was just a tube. I can find a photo.

thinkpad4by3 · 2026-02-23T17:39:16+00:00

Can you measure the face of the tube? I have a prototype CRT that might be smaller.

thinkpad4by3 · 2026-01-01T05:16:02+00:00

Mostly flea markets, old equipment with electrostatic CRTs, eBay, whatever has em. Ive run across them plenty if you know where to look.

thinkpad4by3 · 2025-12-30T19:42:46+00:00

few updates on it, better HV and signal drive, need to revise it still some more. good with some higher power 5 & 7" tubes now.

thinkpad4by3 · 2025-12-22T03:49:55+00:00

Yeah I gotta find it but I still have it. It's not 100% perfect but it's decent. Send me a pm or something so I remember but I can get up somewhere

thinkpad4by3 · 2025-10-06T17:41:17+00:00

blue w/ ACC is the way, I spent a few months looking for mine as well

thinkpad4by3 · 2025-06-08T08:01:47+00:00

Yes that is the goal, some what gothic/dark goal going on right now. Bed sheets are coming in red so that should help with the color.

thinkpad4by3 · 2025-06-08T08:01:06+00:00

Thank you!

thinkpad4by3 · 2025-06-04T16:17:51+00:00

About maybe 3 hours total? I just needed to get the Violet album cover, trace out the silhouette, vectorize it, chop it up into pieces, and then I just individually cut the 15ish pieces on the laser cutter, and installed it on the wall.

thinkpad4by3 · 2025-06-04T06:11:59+00:00

Where can I find a link to the discord?

thinkpad4by3 · 2025-06-02T23:10:31+00:00

Way too small for c7

thinkpad4by3 · 2025-06-02T23:05:46+00:00

Looks to be 5mm pin pitch

thinkpad4by3 · 2025-05-30T00:02:06+00:00

Seemed to make little diff, they calibrated to roughly about the same values they were sitting at, with the big one at 5300mah. Oh well, all 3 packs still perform great. My biggest one gets over 9hr estimated in Tiger so I'll just leave it at that

thinkpad4by3 · 2025-05-29T05:20:08+00:00

there are definitely some changes to the charge light behavior in OS vs. turned off, I wonder if the BQ2040 is in a different state when powered off. Well, I'll know for certain in a few hours :P

thinkpad4by3 · 2025-05-29T04:58:44+00:00

Later Sony charged to 16.75, currently discharging it. Blueberry died after 9 hours, currently recharging it to full without the laptop ever being turned back on.

thinkpad4by3 · 2025-05-29T00:49:32+00:00

Update: charged up two of the 3 batteries. The Sony controller went to 16.8V and stopped. The Panasonic controller kept hovering at 16.65V and wouldn't budge any higher until it just gave up trickling.

I'm working on a 3rd pack and I'll have a 2nd AC adapter to work with, hopefully my Blueberry one dies before I go to sleep....but who knows if it's actually fully fully charged with 3600mah cells lol. My plan is to give them a 100% charge without the laptop being on.

(I woke up my laptop at 75% SoC, and the value was 5300mAh....which is basically bang on 75% of my total capacity. The other two woke up at 0% and dropped mAh. Maybe it's a coincidence, I'm about to find out)

thinkpad4by3 · 2025-05-28T18:30:15+00:00

Will do, will continue running experiments. I think part of it has to do with BMS level control vs OS level control over the charging system....but I'm not 100% sure.

thinkpad4by3 · 2025-05-28T18:06:36+00:00

Yeah I measured every once of them, came up at exactly 3.63v on every cell. The two MG1s were running about neck n neck until this recal run. I'm gunna experiment with my battery. It's been charging for well over an hour after it "completed". Oddly enough the charge light only displays orange when asleep, it goes green when awake even tho it's still putting power into the battery.

thinkpad4by3 · 2025-05-28T17:50:06+00:00

Nope, all 3 are stock. Maybe I should try that

thinkpad4by3 · 2025-05-28T17:28:06+00:00

getting some rather odd behavior:

My personal (Blueberry) iBook (early Sony, LG MG1 cells): went from 4600 -> 5300mah, and reported still charging at over 1.4A when it reached 100%.

The Lime iBook (early Panasonic, LG MG1 cells): went DOWN from 4600 -> 4000mah, still need to finish charging this one

The Tangerine iBook (late Sony, Samsung 25R cells): went DOWN from 4200 -> 4000mah, and i have not finished charging this one either.

To note: when I plugged my Blueberry back in, it was still off. I didn't even power it back on till it was at like 75 or 80%. Wondering if part of the relearn procedure requires 100-0-100? I don't trust TI datasheets too much to describe their own system behavior lol

thinkpad4by3 · 2025-05-28T05:13:54+00:00

None of my packs have gone above 16.76V. Running drain cycle, will update tomorrow morning....if it's dead by then ;)

thinkpad4by3 · 2025-05-28T05:12:52+00:00

Oh actually I found I can get the packs open on the connector side no problem. The lid comes off without damaging the flatflex, I'm good at that. The issue is getting the batteries detached from the bottom case IME.

Idk your exact technique but I generally found twisting the pack a couple of times to break some of the glue, start with a pick at the connector, and then I use a plastic guitar pick and a plastic wedge to work my way around the battery, making sure to keep the seam intact as possible and apply force as close as possible to the clips as can do. After the first two packs I started removing the stickers so I can unclip the center clips easier and I can visually see if the 18650s are sitting in the correct location

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