35min Repeat Timer

9:25 am in electronic components, Getting Started, How-Tos by Hardware Junkie

This is something I came across at another project site. Its a detailed tutorial on how to modify a 24 hour timer into a 35 minute repeat timer at 50 sec intervals for hydroponic and aeroponic setups.

Very handy link.

If you don’t feel like making one, he also sells them from Ebay and his website.