funkey-project / funkey-s-hardware Goto Github PK

Hi,

very nice project and very well documented! Congrats!

I have a question regarding the default voltage on the AXP209. I was reading the datasheet but it is not very clear how the voltage is set when the system starts, before u-boot, or kernel takes control.

For the LDO1, and DC3 there are some set pins that in the funkey schematic sets them to 3.3V.
The Vdram is fixed to 1.8V.

LDO2 can vary from 1.8V-3.3V, but in the schematic it is 3.0V.
DC3 can vary from 0.7-3.5V, but in the schematic it is 1.25V (Vcore).

So, how the voltage is set before the CPU wakes?

BR

This looks like a custom made LCD or a standard LCD with custom Flex on it. Can you tell us what the original LCD was or the driver IC it uses so other LCDs can be used.

Thanks.

The chip documentation states that the 23 Pin BIAS should be connected to a 200K 1% resistor, but in the schematic diagram, the R22 200K 1% resistor is connected to the 21 Pin APS pin,Is this a schematic error or a document error? In the AXP203 design, they all connected the 23 Pin BIAS series resistor to GND instead of grounding the 1uF capacitor

hi there, on the kickstarter page and hackaday page (https://hackaday.io/project/164934/logs) describing this product is the text

"Since its origins, the FunKey S has proudly been Open Hardware & Open Source."

with the open source hardware logo and OSI logo:

which is awesome! the open source hardware association, whose 'gear' logo is used on that page
https://www.oshwa.org/open-source-hardware-logo/
says
"This logo may be used if your hardware complies with the Open Source Hardware Definition."
The definition at https://www.oshwa.org/definition/ specifies that you cannot have 'non commercial' as a restriction on the license.

This repository has a "Non Commercial" license tag.

please clarify:

• if this is open hardware and if so, please update the license so it matches the requirements of using the open hardware logo and description.
• or if it not open hardware, you cannot use the logo and must update the hackaday, kickstarter page, etc.

thank you :)

Hey there,

I stumbled over this project and open hardware design while searching for a small handheld audio player that is NOT Android based (best case: hackable) and small enough to carry around. Basically, I'm still using my iPods (more specific: iPod Nano 7g with touch screen), because I did not find any alternative that can both play most modern codecs while also having good battery life yet.

So since you share ALL of your designs and hard work publicly, did you ever think of creating such a small audio player?

I think that you already got the most of the work done with the Funkey S... the only things I would consider is a non-foldable design with touchscreen and audio jack supporting TRRS with OMTP for headphone remote controls (vol+, vol-, play/pause toggle).

If you wanna go all in, you could add some audiophile stuff like 4.4mm BAL 260mW @32-ohm output or Bluetooth 5 LDAC, AptX HD, SBC, AAC licensing - maybe even USB DAC Support

For the first prototype I would like to suggest a device similar to the Fiio M6, which is no longer available but was pretty successful. I own one of these and hardware wise it is by far the best audio player I ever had - only problem is the Software. Android 7 which is slow, long boot times and outdated app support.

A dedicated fast audio player with an app also supporting audio books would make a great buy in my opinion...

What do you think?