61–70 of 161 posts
The case it a bit too big, there are still battery issues, and of course a 5G card + microphone + loudspeaker need to be added.
But perhaps the day will come that I can roll that wheel to view my emails again, use that excellent small keyboard to reply without having to touch glass.
This 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 understood it as it'll use only one of the batteries, but you can swap between which is used. So initially, you have two charged batteries, while using only one. Once you run out of power in the first one, you'll switch to the second, and now the first one could be swapped to a fully charged one. Blue/green deployments, but for batteries basically.
To do what you describe, you would need additional components to "switch" one battery at a time into the power path. (This can be done with a single transistor if you're only worried about current flowing in one direction, but I believe it's trickier if you want to support both charging and discharging in the same circuit.)
This 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…
If you ran it with one battery would you not have the problem ?
The problem shows up when you try to "hot-swap" just one of the batteries and replace it with one at a different state of charge, as the README claims you can do.
Looks like it could be a great pocket device for pico-8 development.
That’s my thoughts as well. I ordered a uConsole from clockworkPI, long waitlist there. This is tempting me again. I feel this may have even better ergonomic qualitty for my personal taste and appeara more portable.
I just built a portable enclosure with a charge controller, USB hub, ethernet and four 18650 batteries. While The Hackberry Pi Zero would've been a lot easier (assuming I'd've just bought one instead of making it myself), the only downside is the battery life. My application is for having a server that travels with me and is on 100% of the time, sometimes running on battery for hours at a time.
This, though, is so much smaller... It's definitely something to consider when they're shipping.
Edit: just read, "Main Processor: Only compaticable with Raspberry pi zero 2w." I wonder why it's not compatible with the original Zero. Is it just that the drivers and preinstalled OS are 64 bit? Even though the 2W is more performant per watt, it still takes more absolute power. Hmmm.
This 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…
> 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 banks. I wonder how hard it'd be to change the IP5306 in the Hackberry Pi Zero to handle the two batteries separately.
Earlier quoted context omitted.
That’s my thoughts as well. I ordered a uConsole from clockworkPI, long waitlist there. This is tempting me again. I feel this may have even better ergonomic qualitty for my personal taste and appeara more portable.
Order one. Dead on arrival. Gave up. Now may think to savage at least the rpi …
Earlier quoted context omitted.
I understood it as it'll use only one of the batteries, but you can swap between which is used. So initially, you have two charged batteries, while using only one. Once you run out of power in the first one, you'll switch to the second, and now the first one could be swapped to a fully charged one. Blue/green deployments, but for batteries basically.
It would be convenient if it worked that way, but since the batteries are connected across each other in parallel, they will both be discharged simultaneously. And as soon as you hot-swap one of the nearly-discharged batteries for a charged one, it'll be more-or-less short circuited across its discharged counterpart. To do what you describe, you would need additional components to "switch" one battery at a time into…
Earlier quoted context omitted.
If you ran it with one battery would you not have the problem ?
There's no problem if you use one battery, and there should also be no problem if you use two batteries and charge/discharge them both simultaneously (because then the voltages are matched). The problem shows up when you try to "hot-swap" just one of the batteries and replace it with one at a different state of charge, as the README claims you can do.
I think there is no shortage of battery management ICs, but the number that can arbitrate between external power/battery A/Battery B certainly eliminates 97% on your Digikey parametrics.