Hi everyone,

I just recently (1/11, 9:30 PM) updated the firmware of my uRadmonitor A3 (HW: 105)from firmware version 126 to 139 after I got it mailed to me by Radu.

I just now realize that the VOC values the device reports are now hugely different. Before I had values somewhere around 290.000 – 320.000 Ohm. With the new firmware I now see values around 4.000 – 7.000 Ohm.
See chart: https://www.uradmonitor.com/tools/dashboard-04/?open=82000095

Has anyone expierenced the same?

The flashing process looked ok and all the other sensor values look (at least to me) like sensible data.

$ avrdude -p atmega328p -P usb -c usbasp -U flash:w:82000095_fw139.hex:i

avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: reading input file "82000095_fw139.hex"
avrdude: writing flash (22154 bytes):

Writing | ################################################## | 100% 14.83s

avrdude: 22154 bytes of flash written
avrdude: verifying flash memory against 82000095_fw139.hex:
avrdude: load data flash data from input file 82000095_fw139.hex:
avrdude: input file 82000095_fw139.hex contains 22154 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 12.44s

avrdude: verifying ...
avrdude: 22154 bytes of flash verified

avrdude: safemode: Fuses OK (E:FD, H:D7, L:DC)

avrdude done.  Thank you.

Kind Regards

Matthias