The shell script can run for hours with no problem if I do not access the RTC clock http://www.adafruit.com/products/264. raspistill hangs if I run the command "hwclock -r" a few times. The camera LED is on.
raspistill also hangs if I run python scripts to access a Pi Plate http://www.adafruit.com/products/1115 or a TMP102 https://www.sparkfun.com/products/9418
I have been using one pi model A and one model B with two different power sources.
One 2A power supply connected to a USB hub. The pi is powered from the hub to the mikrousb port. TP1-TP2 is 4.9V. Also tested with a 12v car battery and LM2596
No keyboard and screen is connected, I login via ssh to them.
I did a fresh install of 2013-05-25-wheezy-raspbian on a second SD-card. No difference.
The script that I use to test raspistill
Code: Select all
while /bin/true ; do date raspistill -n -t 100 -e jpg -o - > /dev/null sleep 1 done