automatic door opening chicken house

[fdear]

to open and close once day with adjustable times i need the polarity to change for 12v-24v reverse polarity motor .I wondered would you list the required components and describe how to wire it +diagrams. I hope to use 240v + tranformer down to 12v or12v battery +time clock 0-60 second cheers frank.

[pebe]

Have you decided what tímer you will use?