Awesome work. Know any surplus stores that carry BB keyboards?
Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
81–90 of 161 posts
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#82This looks like a pretty cool device! However, I was immediately curious about how the "dual battery" feature works. The IP5306 power-management IC seems to be designed only for a single battery, and as far as I can tell from the schematic[1], the two battery connectors are just directly connected to each other in parallel (across VBAT and GND). This seems really sketchy. If you plug in two batteries that are not at…
I was going to launch into a lecture about how battery isolation is a Thing, very simple, etc and the author couldn't possibly be dumb enough to not isolate them with diodes, but then I looked at the schematic and yiiiiiiiikes, they're both just tied together, I think. There's a charge management IC and a MOSFET as part of the USB power input...and that's it.
I was sketched out by BSI not being connected to anything, but it seems it's a fixed resistance battery size/chemistry ID function, not a temperature sensor. That said, I don't see any over/under temperature protection except for some sort of vague temperature limit in the charge IC (which is not thermally coupled to the battery in any way, so only a general "the device is way too hot"), so hopefully that's in the battery - don't go buying any cheapo clones.
I also don't see any fusing, which is a huge no-no. A polyfuse is a twenty cent (ish) part. Again, an official battery would have an internal BMS circuit and prevent overcurrent events, but people are probably going to go for the almost-cheapest battery on Amazon/Ebay. Not to mention counterfeit problems even if you do try to get an OEM battery.
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#83Is the keyboard original? The one on the q20 bb was great
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#84I wasn't expecting to see buy now links, so I wasn't too disappointed when I did see them but found they both say out of stock - was completely ready to impulse buy the BB Q20 keyboard version (or either, really!) and hope that having registered to hear it more being sold I'll be able to get one. I'd almost be tempted to try to put one together myself, but it's not something I'd find particularly easy and there's oth…
Stock ETA is 1 or 2 weeks, depending on model.
Yep thanks, I'm indeed hoping to take advantage of that!
But I have a sneaking suspicion it won't be a big enough quantity to satisfy even the people who've seen this HN submission so may well come down to what time of day / how quickly I see the email
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#85This looks like a pretty cool device! However, I was immediately curious about how the "dual battery" feature works. The IP5306 power-management IC seems to be designed only for a single battery, and as far as I can tell from the schematic[1], the two battery connectors are just directly connected to each other in parallel (across VBAT and GND). This seems really sketchy. If you plug in two batteries that are not at…
I read this part: > Replace your battery in 10 seconds without killing the power! as a suggestion that you'd have four batteries total, and you'd have two that're fully charged, and you'd replace one battery, and within seconds you'd replace the other. Or at least that's how I'd do it. I've recently read up about power management and battery charging, and want to make a charge controller than can connect two separate…
And if you screw up which battery is which?
"Do things exactly right, quickly, or the device bursts into flames*" is not acceptable electronics design, even for something you intend to use yourself.
* do you really want to trust a generic battery's built-in protection IC?
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#86I bought the Bluetooth keyboard from this maker, ZitaoTech. The fit and finish was excellent. Highly recommended.
So it's a recently made clone of the keyboard, rather than an original one?
The readme is unclear on this subject, they advertise "original keyboard".
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#87This looks like a pretty cool device! However, I was immediately curious about how the "dual battery" feature works. The IP5306 power-management IC seems to be designed only for a single battery, and as far as I can tell from the schematic[1], the two battery connectors are just directly connected to each other in parallel (across VBAT and GND). This seems really sketchy. If you plug in two batteries that are not at…
I read this part: > Replace your battery in 10 seconds without killing the power! as a suggestion that you'd have four batteries total, and you'd have two that're fully charged, and you'd replace one battery, and within seconds you'd replace the other. Or at least that's how I'd do it. I've recently read up about power management and battery charging, and want to make a charge controller than can connect two separate…
It should definitely use the plural, batteries, if that's the intention.
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#88The keyboard is the weak link.
We need a better voice to text. One that tunes into its user's voice perfectly without getting distracted. And that you can subvocalize at.
An optimized spoken language for talking to phones too. Something harsh, insectile and dystopian.
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#89Oh great! Another awesome looking cyberdeck that I want to own and will find absolutely no practical use for. I've added myself to the waitlist already.
See I do have a use for this kind of thing, but not exactly. I have a few desktop towers and Raspberry Pi devices that sometimes due to upgrades or random acts of Zeus absolutely fail to boot up. I want some ability to connect a keyboard and a screen to these so I can see the actual boot screen. Normally for me this involves lugging the device to my office and connecting it to my office monitor and keyboard which is…
They make USB KVM devices. Run an application on your computer to send input / receive output. Then you can use whatever laptop you want. That said, I've only used them on Windows, so drivers might be an issue.
Re: Hackberry-Pi_Zero – A handheld Linux terminal using Raspberry Pi Zero 2W
#90It looks cool, but I've found the Steam Deck is the only portable computer that's versatile enough for me to actually use for all sorts of different stuff.
Anyone know if steam deck can act as a USB OTG keyboard?
I remember this being a cool feature of those GPD Pocket computers. It would be cool to hook something up to the USB and send keystrokes from the steam deck (not necessarily from the touchscreen keyboard, but by scripts).