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USB-1100PA 433MHz Wireless RF Transceiver…

So I’m looking into home automation, and while I have something working on my Pi using some other 433 modules (namely the MX-05V/XD-RF-5V – rf for arduino), I though I would try my luck with this one, as it would make it possible to use other hardware then my pi, and perhaps make it easier for others to follow.

So this is the device:

rf_transceiver

Had I done a google search before ordering it, I properly would not have bought one, as it seems nobody has gotten them to work yet, but here’s some data on it, and some pictures:

[root@c4a012 urup]# cat /proc/version
Linux version 4.3.3-2-ARCH (builduser@tobias) (gcc version 5.3.0 (GCC) ) #1 SMP PREEMPT Wed Dec 23 20:25:12 CET 2015

[root@c4a012 urup]# lsusb -s 011
Bus 001 Device 011: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART Bridge / myAVR mySmartUSB light

[root@c4a012 urup]# dmesg
[ 8353.590658] usb 1-1.2: new full-speed USB device number 11 using ehci-pci
[ 8353.677620] cp210x 1-1.2:1.0: cp210x converter detected
[ 8353.677741] usb 1-1.2: cp210x converter now attached to ttyUSB0

And this to how the insides look:

IMG_20160121_145434IMG_20160121_145527IMG_20160121_145455

It has three chip on the PCB of interst:

  • First up, from the USB port is Silicon Labs CP2102, which is a “USB to UART Bridge”
  • Next is a Atmel MEGA48PA, which is a 20Mhz 8 bit AVR micro-processor.
  • And the final chip is a TI CC1101 tranceiver chip (“Low-Power Sub-1GHz RF Transceiver” accoring to Texas Instruments).

The PCB is also labeled “USB2101_RF1100”

So it’s found, and the right driver is loaded, so far so good, but now I can’t find any software to control it.

When plugged in LED2 lights up green (this LED is hidden when the white cover is on, and only LED1 is visible).

The dongle came with absolutely no manual or software, and while I can  start a minicom session on ttyUSB0, nothing more happens.

To get further I need to figure out what runs inside that AVR MCU.

Doing a bit more googling I found this: http://www.fytoo.com/msg.php?id=158 which might be the manufacturer of the device.
Unfortunately I don’t speak Chinese.

Also I’m unsure if the transceiver uses (can use) the same modulation as my cheap light switches and dimmers (which use OOK).