shortened title due to posting bug. Hi felow engineers Im building my first usefull circuit and having heaps of fun Its an adaptation from a 3.5 minute egg timer using a 555 ic. Its purpose is to control a relay for a led 12v downlight on a timer so It will turn off by itself. the time goes from about 1 minute to about an hour and has a led to shine on the switch and there is a switch on the reset line to turn it off manually tho not shown on the schematic. I have made it up on a breadboard and it works nicely. before I start soldering I thought I would post it here and mabye get some feedback/sugestions to improve it, also as its my first real practical circuit im just a tad worried it might burn something. there is one improvement I would like to add but dont know how and that is I would like to be able to restart the timer during the cycle so I could extend the time it was on without waiting for it to finish and then restart it if u get what I mean. below is the circuit although all the values are not quite accurate due to me not knowing how to use the design software I plan to build it with perfboard tho i would like to bake a pcb so i could make a few of them easily but im not realy confident enough of the design.