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Assembly steps
Breadboard basics: the 5 holes in each numbered column (a–e, or f–j) are joined inside. The long red/blue rails are joined along their length.
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Drag the board to move it · wheel or + / − to zoom · Fit to put it back
How to build on a perfboard
Connections and wire colours
Build steps
Hover a step to light it up on the board; click it to tick it off (the ticks are saved with the project). Hover a hole to see what goes in it; click a part, a wire or a hole for more (its connection lights up, and you can change its wire colour); double-click a part to turn it. A square lead is pin 1, a cathode or + leg.
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Board pins used
What your blocks write
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Click parts to interact: hold buttons, click sensors and knobs to change their values.