The Configuration is obtained by using the web interface. By default, the web interface login/pass is: admin/admin. The configuration is done with two steps:
the hardware part where you need to choose the inputs / outputs of the Velleman cards. This depends on your installation. Then, you need to restart the automate by the web interface.
The time part where you choose the start / end time of your pumps, ...
Hardware Installation:: see automate.pdf
Software Installation: see automate.pdf
See here.
Some Wecams can be used with openwrt.