Cannot write to device with 413d:2107

[schniepp]

I also have a 413d:2107 device. It is supposed to do both T and R.H.: vendor, Amazon. By pressing the button, I can get it to operate like a keyboard and just dump its output to /dev/stdin. So I know it works, and it puts out T and R.H. in a human readable way. But that's not really practical.

My biggest issue right now is that hid-query /dev/hidraw3 0x01 0x86 0xff 0x01 0x00 0x00 0x00 0x00 gives me this error: Write failed: (null). I am doing this as root, and hid-query detects it successfully (that's how I know that it is hidraw3). Is this perhaps a slightly different device? Does it need a different string sent? Or is something about permissions set up the wrong way, so that writing does not work?

[mreymann]

Unfortunately there are many different devices that use this vendor ID, but you can try this:
Please look at https://github.com/mreymann/temperx under "Prerequesites". Make sure the hidquery binary uses libusb not hidraw! /usr/local/bin/hid-query -e should then give you a USB path like this: 000x:000x:01.
Then use this path with hidquery. E. g.:
$ /usr/local/bin/hid-query 0005:0003:01 0x01 0x80 0x33 0x01 0x00 0x00 0x00 0x00
Device 0005:0003:01 : 0c45:7401 interface 1 : RDing TEMPerV1.4

Writing data (9 bytes):
00 01 80 33 01 00 00 00 00

Response from device (8 bytes):
80 02 18 80 8c 0f be 00