WP34S Reset during printing

[Marcus von Cube]

(09-30-2014 06:23 PM)Christoph Giesselink Wrote:  I thought that maybe caused by low batteries and measured the equipped onces (both >3V) and also using new ones, same problem.

Bad news :-(

You can try to increase the printer delay to allow the cells to recover between two lines of output. I tried hard to minimize the power consumption of the IR circuit by generating the pulses with very little CPU intervention but the strain on the cells may still be an issue.