![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqK8_oK4U0UIR-kCRv-ERJfV5Zr2jLFu8o0k0fyn1jES91NlQvwGF_UFDrbYyj_Lw2wdjZ7CuCc_DQpI_t_6_iq7YcMmA71OBv51DZr4mbVIYLirmrZ_GjhzzzmJw9HjZbZBo3n3SIgaA/s320/DSCN2851.JPG)
An excellent cork cannon made with a $15 irrigation system valve (24VDC); must be used only with great caution and supervision. We're working on a timer circuit using an MM74C926 counter IC in an effort to measure the velocity of a cork in the barrel.