Hi all,
I ordered (or preordered, whichever) the D4E16H model from ALLNET China roughly three weeks ago and got it (in Ohio USA) the other day. And I’m nobody at all. 
edit: apparently their store allowed me to select no header and onboard antenna even though there’s no such combination listed on the linked page with SKUs, which may be why I still got the header. It seems to be the store’s problem, and according to the page’s feature selection function, it looks like I underpaid by $0.80.
Can you send a link?
That’s great! But the listed price here for 4gb ram is $45 but the linked site is selling at $85
There are 4 basic variations (or models or whatever) with 4GB RAM. $45, $55, $65, and $85 are for the available eMMC sizes-- 16GB, 32GB, 64GB, 128GB, respectively.
Armbian + Twister OS delivering value once more!
Let’s see if wiring a 3.5mm audio jack for input would get the board to capture sound.
The audio jack channels (left and right) are provided by PWM driven GPIO (channel 0 by GPIO 12 or 18, and channel 1 by GPIO 13 or 19).
@jack can you validate if these GPIO PINS can get audio in?
That list corresponds to the first half of this list. I picked that same $45 model because I need CPU, RAM, and GPIO more than anything else.
Oh I just saw. If you don’t need 128gb emmc then you can get a $45 one. Nice.
Edit: I have a ton of micro SD cards lying around so I don’t need the onboard storage. I’m more excited about 4gb of ram on a zero form factor SBC.
The GPIO pins are not compatible with raspi? This makes this board dead on arrival.
Is this true? Are any Rock Pi’s GPIO pins considered Raspberry Pi compatible?
GPIO not at all, has no need to be. You never will get exact as SoC pin muxes are never the same.
If you want audio get a usb sound card the whole raspberry hat thing for audio is just stupid when a $3 usb card can do the same.
The only thing that is missing is likely a CSI/DSI but hey, but audio is no problem.
I am not sure why other manufactures continue with the low density 40pin gpio as its had its day anyway but relatively pointless to emulate when its not pin compat exact.
Prob should be an daughter board so you can route the pin mux from a higher density connector.
@eragefe , I was thinking about that , when looking at TDMB . My original comment was:
‘Also this interface to me seems oddly drawn in the cct diagram , so I am not 100% sure that pins 31 and 33 are fully connected at the 8601 GPIO end . This would need examination of the hardware ‘.
https://forum.radxa.com/uploads/default/original/2X/8/87722bb5b8c9091def643a25d6fd831cc37519f4.png
As it turned out looks like those pins might not be connected after all . To me TDMB looks more suited to inputting i2s data , so I did not pay it much attention , since my main interest is Volumio .
For i2s output , to a DAC , in the case of streamer applications , to me TDMA looks like a better option .
Here the i2s pins would be;
https://forum.radxa.com/uploads/default/original/2X/e/e1a1119090bc9a40ee0a86b0c56ca00c53abf879.png
And from the look of the cct, pins: 12,13,16 and 18 are connected to the header , also they go via a voltage isolating chip , I guess to make it more compatible with any different type of DAC and protect the soc. And if I was to make a guess how to connect a DAC over i2s to Rzero , I would try pins 12,13 and16 , for Data, bclk and lrck respectively.
Thanks for the answer. I was interested to use it in slave mode with external clocks. But anyway. I just dont understand why not connect it when several pins are not connected.
I looked in the datasheet for S905Y2 and it seems that both TDMA and TDMB can be used as both in and out with different functions
Can it use this board setup? 8086
Is it compatible with the 8086 setup?
Is there any way to install gapps on stock Android?
Hi @chewitt
Can you confirm whether or not the USB-3.0 port on this board will be able to function in DEVICE role? I’m mainly interested in this board for GUD https://github.com/notro/gud/wiki
