digitemp is installed in /usr/bin need to call it with full path http://public.rz.fh-wolfenbuettel.de/~hamannm/general/digitempd.html http://martybugs.net/electronics/tempsensor/software.cgi apt-get install digitemp cd /usr/bin digitemp_DS2490 digitemp_DS9097 digitemp_DS9097U digitemp_DS2490 is usb 1 wire /usr/bin/digitemp_DS2490 -i -s /dev/ttyS0 -q -c /etc/digitemp.conf echo "hgdtrdstrytifyyukgfybytftrdsxcrtrfkgvylglu" > /dev/ttyS1 LEd works on same port as used for serial console Left side of the board digitemp_DS9097 -i -s /dev/ttyS1 -q -c /etc/digitemp.conf nano /etc/digitemp.conf digitemp_DS9097 -i -s /dev/ttyS1 -c /etc/digitemp.conf nano /etc/digitemp.conf digitemp_DS9097U -i -s /dev/ttyS1 -c /etc/digitemp.conf digitemp_DS9097 -a -q -c /etc/digitemp.conf stty -F /dev/ttyS1 raw speed 19200 stty -F /dev/ttyS1 raw speed 9600