LM317 Fragment Stripboard Veroboard

I often make power supplies for whatever project I design and the simplest and cheapest way is to buy in loads of LM317s (or salvage them or their pin compatible lower current 1117 counterparts) and use a couple of resistors to set the voltage you need rather than having to buy a load of separate value voltage regulators.
you can always just set the voltage with a trim pot but that's messy so we can use a simple equation to get the value needed, but since no one can be arsed to do equations - even simple ones - I have listed values  of voltages I have commonly used.
if you don't have the right value resistor - don't be afraid to make resistor tipis or resistor canoes (series or parallel) to get the right value - every good project has a tipi/canoe in it :)