Erica Synths EDU DIY Wavefolder Eurorack Module Kit - Manual (Page 6)

POWERING YOUR BREADBOARD
Before we can start building, you’ll need to find a way of providing your breadboard with
power. Ideally, you’d use a dual 12 V power supply for this. Dual power supplies are great
– and if you want to get serious about synth design, you should invest in one at some
point. But what if you’re just starting out, and you’d like to use batteries instead?
Thankfully, that’s totally doable.
You just need to connect two 9 V batteries to your
breadboard like shown here . For this, you should use 9 V battery clips, which are 3
cheap & widely available in every electronics shop.
By connecting the batteries like this, the row on the left side labeled + becomes your
positive rail, the row on the right side labeled + becomes your negative rail, and both rows
labeled – become your ground rails. 4
Please make sure you disconnect the batteries from your breadboard when you
make changes to the circuit!
Otherwise you run the risk of damaging components.
Since all circuits in this manual were designed for a 12 V power supply, we assume that to be 3
the default. Everything will still work roughly the same with 9 V, though.
This is a bit awkward because breadboards weren’t really made with dual supply voltages in 4
mind.
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