Some Dreamcatcher Single Board Computer hardware info

The docs are limited...some basic questions are assumed to be common knowledge, I post stuff as I figure it out...

I took a photo of the SBC and ID'd the important parts, and what they are for.

I will say this is a single core Arm7 (Raspberry Pi Zero...or early RPi2) and built in RTL-SDR with 1.5Ghz LNA and +5v bias tee capability...software controllable.

The Raspberry Pi3 is MUCH faster and more capable of a computer.   However the RTL-SDR on this board is very accurate and very compatible with all the software I have thrown at it.

It will run everything but SpyServer (Airspy, SDR# folks).  Because it is a slower processor, it doesn't run very hot.   In my opinion still a very useful board...I wonder what it would cost to remake it using the quadcore ARM7 that the RPi3 uses.

Anyway, here are the important connections...

Notes:

I can't tell if the switch (SW_FACTORY) between the USB ports and the power switch is used for anything...or how it is addressed.

Just up from the power switch, just up from LED11/AGP3 is a solder point marked LIPO_BAT.

The DIP switches above that are labeled PD3 and AUTO_BOOT...mine are in the up position, and it always auto boots when power is applied.

Just behind SW_FACTORY are two pins labeled CHG-IN ...makes you think that goes with the LIPO_BAT connector...and next to that is a CHGLED led.

From the docs, apparently you can hook up a OTG USB cable to the board and plug it into your computer, the DC will boot, and you will have terminal access through a comm port.


There is an unpopulated USB1 at the top of the board.

The populated USB slots at the upper left, start with USB2/WIFI  So apparently the wifi dongle is meant to plug in there.  Next two are labeled USB3 and USB4


To the right, below the RF cans is SPI2 with 5 unpopulated pins labeled
   MOSI, MISO, CS0, CLK,  GND

Below that is IC2 interface  TWI2  unpopulated
   GND, 3V3, SCK, SDA

Then UART1   
   GND, RX, TX, 3V3

Just left of the LED9/PWR  is an unpopulated JTAG connector. 
       RESET_N, GND,TD0, TCK, TMS, TO1, 3V3

Finally at bottom right is SPI1 with
       MOSI, MISO, CS0, CLK, GND

Very bottom has GPIO connectors.


Obviously most of the parts are software controllable...if you can find some documentation for it.