Stop the sirring noise!

[pmprog]

PS: Pyra and the Pyra-Phone idea were well accepted during FOSDEM by everybody I was able to talk to. So expect some prototype of a Pyra-Phone to be shown (photos, videos) in a while. Next we can think about doing preorders for a handful of developers. And if everything goes well, about crowdfunding for a series. But please don't expect that we can fulfill many wishes for change (most notably: we can't change to a capacitive screen if we want to reuse the existing Pyra display for keeping the project simple and doable in an evolutionary mode).

I presume anything we develop for the Pyra (ie, using the modem and other sensors) would be reusable in the Pyra-Phone? I've struggled to do much development lately and I'm interested in the phone version, but if I can start with the Pyra (when that arrives), that'll make some things easier.

On the capactive screen, meh, I don't see why that would be a problem, you can still press resistives with your finger, and using larger buttons will cover fat fingers

 

[rygD]

A Pyra-Phone does not necessarily mean you have to use Pyra-OS on it. They share hardware components and kernel but there will be multiple GUI projects to choose from.

This is why the Pyra and Pyra-Phone are great ideas. Is that the name you are thinking of going with? Please keep us updated here if you move forward with it. (I would still love an ebook reader or tablet if that ever becomes feasible. Pyra-Phone will have to be good enough for me for now.) Are you going to use the Pyra battery?

 

[Eight Bit]

On the capacitive screen, meh, I don't see why that would be a problem

I think it could be a problem when a phone is in one's pockets. A capacitive screen wouldn't register touch from non capacitive objects where as a resistive screen would.
It would need a cover of some sort. I like the e-ink screen idea, and maybe even get rid of the touch screen completely and go for a blackberry form factor with a mousepad thing on the bottom?

 

[EvilDragon]

I think it could be a problem when a phone is in one's pockets. A capacitive screen wouldn't register touch from non capacitive objects where as a resistive screen would.

It would. If you're unlucky and the movements inside your pocket cause static electricity, it would react right away.
That's why you can lock / unlock it.

 

[rygD]

I think it could be a problem when a phone is in one's pockets. A capacitive screen wouldn't register touch from non capacitive objects where as a resistive screen would.
It would need a cover of some sort. I like the e-ink screen idea, and maybe even get rid of the touch screen completely and go for a blackberry form factor with a mousepad thing on the bottom?

I would be more concerned about damaging the touch layer of you have anything else in the pocket.

If he makes a tablet format I will push for e-ink, but since the whole point is to reuse as much of the Pyra as possible, at least for now I am sure he is only looking at using the Pyra screen.

If there is a touchpad on the bottom, let's take it a bit further and add a keyboard. Oh, and gaming controls!

 

[matzesu]

Therefore there is the " Submarine Mode" ( i called it so) on the Apple Watch if you wants to use it in Water, the Water can cause some input to the Touchscreen,
For me, the Pyra Phone may be too bulky, and i have allready the Pyra in my Poket, once the Pyra Phone is a real produkt, but the Idea sounds great

 

[Djoga'Ro]

Is that the name you are thinking of going with?

It should be called Phoyna

 

[edgex004]

A 9.7" e-ink tablet with backlight, a Wacom digitizer, and Pyra OS would fulfill a long time dream of mine.

 

[Young Ace]

>Pyra phone
All of my yes!

Maybe it would ship with postmarketOS? And have a huge battery?

The Neo900's progress is very slow...

 

[levi]

Do those caps produce heat? Does hot glue conduct heat well? Does hot glue shrink over time, thus exert strain on the caps and further on the soldering? I'm not trying to hint on something, I already know. I don't know.

Everything produces heat to some extent. Hot glue, being a modified plastic is unlikely to be a good conductor in the solid phase at least, but I think most capacitors are fairly efficient so they don't have to dissipate much heat. There's no solvent so it's unlikely to shrink over time, I think.

That said, epoxy formulations are more common in this use case I think. They're mechanically rigid so stop anything moving. But they're also a PITA if you want to probe anything underneath them.

 

[Djhg2000]

You might be interested in the Pyra schematics once your exam is behind you... it has the part number for every major component. The wonky chip in question is the tps2505.

I have been so busy with my studies I totally missed/forgot the schematics. Are the ones attached to this thread the latest public version? I'll have a look and see if I can think of something else to do here, but finding a replacement IC with "better" ripple seems to be a fairly straightforward solution.

If I'm reading figure 14 in the datasheet correctly, it shows ripple at around 13kHz, so it's normal. Pulsed frequency mode (used when load is low) has even lower frequency.

FWIW, I counted just over 5 full waves in 400µs (so 13kHz indeed) and 60mV peak to peak for the AUX channel. 35mV on the USB channels.

 

[CommanderB]

Therefore there is the " Submarine Mode" ( i called it so) on the Apple Watch if you wants to use it in Water, the Water can cause some input to the Touchscreen,
For me, the Pyra Phone may be too bulky, and i have allready the Pyra in my Poket, once the Pyra Phone is a real produkt, but the Idea sounds great

That is a good point! How bulky would the pyra phone be? What kind of form factor have you thought of?

I think that a Pyra phone would be a great idea, probably even better than the Librem 5, but I would not underestimate the design/form factor challenge. In my opinion this one of the main drawbacks of the GTA0X/ Openmoko.

Gesendet von meinem SM-N9005 mit Tapatalk

 

[Eight Bit]

Then first thing to think about would be what functionality the device would need.
Would it be more phone or more pocket computer (like Pyra).
Just a touch interface and minimal hardware buttons so essentially a Pyra cpu board built into a pyra screen or a real phone, a bit thicker with just a hardware numpad and smaller screen?
Or blackberry style with an all out keyboard? There's many ways to go

For myself as a future Pyra owner I'd rather see a Pyra companion than the same device- without the keyboard and nubs.

 

[Djhg2000]

The only thing I've found so far is that LDOIN can be connected through a 4.7µF cap to PGND instead of tied to AUX if we don't want to use the 3v3 LDO (the ENLDO pin is tied to ground, so it's permanently disabled anyway). What we currently have isn't wrong, it's just an optimization. It's mentioned in section 8.3.8 on page 11 in the TPS2505 datasheet. Which capacitor is making the noise? Oh and C601 is 100µF while the datasheet recommends 10µF unless the application requires more, is it a typo or to we really need 100µF?

Just an idea; does the noise go away if we wire the input to VBATT endpoint instead of VSYS? I mean it's a boost converter and we enable it in software from a GPIO pin anyway... Efficiency will probably suffer a bit when the ports are enabled but it will change operating mode from no switching (essentially passthrough) to fixed 1MHz PWM. I'll leave it up to more competent people to determine if it's a good idea but for a test it would be interesting to see if it has any impact (if C601 is squeaking then it definitely should).

 

[levi]

That is a good point! How bulky would the pyra phone be? What kind of form factor have you thought of?

He's said he'll be using the 5" screen from the Pyra, and the same battery. The battery is a little wider than the screen, so the phone will at least have some space above and below the screen, although that's still pretty common for earphone and microphone purposes. I'd expect it to be fairly retro in terms of device thickness though, since it'll need that CPU board and a new mainboard between the battery and the screen - most phones I've seem disassembled have the battery directly behind the screen with the motherboard squeezed in around the battery.

 

[Yori]

Then first thing to think about would be what functionality the device would need.
Would it be more phone or more pocket computer (like Pyra).
Just a touch interface and minimal hardware buttons so essentially a Pyra cpu board built into a pyra screen or a real phone, a bit thicker with just a hardware numpad and smaller screen?
Or blackberry style with an all out keyboard? There's many ways to go

For myself as a future Pyra owner I'd rather see a Pyra companion than the same device- without the keyboard and nubs.

A Pyra companion sounds interesting, maybe there should be a Bluetooth companion device for the Pyra down the line!

 

[rygD]

It should be called Phoyna

No, Fyre, because Pyra+Fone. Don't judge me!

A 9.7" e-ink tablet with backlight, a Wacom digitizer, and Pyra OS would fulfill a long time dream of mine.

I am fine with even a 7 inch screen... Actually I prefer it.

Then first thing to think about would be what functionality the device would need.
Would it be more phone or more pocket computer (like Pyra).
Just a touch interface and minimal hardware buttons so essentially a Pyra cpu board built into a pyra screen or a real phone, a bit thicker with just a hardware numpad and smaller screen?
Or blackberry style with an all out keyboard? There's many ways to go

For myself as a future Pyra owner I'd rather see a Pyra companion than the same device- without the keyboard and nubs.

This isn't for us. It is a Pyra based smartphone, so it gets some of the software and the hardware from Pyra. If anything it expands the community and userbase, and that is why I am totally behind it. If I get anything later, like my tablet, doesn't matter. Once there are PyraPhone users they get to come along for the ride with whatever CPU board we get, which is good for all of us. Some of those users will show up here, and some will give us great things, even if it is just a smile on our faces.

He's said he'll be using the 5" screen from the Pyra, and the same battery. The battery is a little wider than the screen, so the phone will at least have some space above and below the screen, although that's still pretty common for earphone and microphone purposes. I'd expect it to be fairly retro in terms of device thickness though, since it'll need that CPU board and a new mainboard between the battery and the screen - most phones I've seem disassembled have the battery directly behind the screen with the motherboard squeezed in around the battery.

I thought he said battery. I guess I missed it when going back. If it looks interesting enough, screw Pyra calls, I need a Pyra-Phone. Not sure why I am so excited about it.

 

[Dark Pulse]

No, Fyre, because Pyra+Fone. Don't judge me!

Wouldn't "Phyre" be better, since it actually has the letters for "phone" in it?

 

[rygD]

Wouldn't "Phyre" be better, since it actually has the letters for "phone" in it?

No! Fyre!

 

[Dark Pulse]

No! Fyre!

The '90s called (on a Phyre), they want their xtreme spellings back.