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Step 2Design & Preparation
First, figure out where you want the lights, and your desired disc diameter. I used my favourite cup as a guide.
To embed the LEDs into the underside of the acrylic, measure and etch three rectangular bevels. There are three more on the other side in case the future me wants indicators there too. Drill holes for the learning sensor too.
Next, cut out three doughnuts that will be stacked up to clear the battery holder.
Some LEDs don't have indicators to tell which end is which. Connect a 3V battery to each one, and mark the minus... it makes things much easier.
Prepare the wires by stripping and tinning them. The exposed wires are very short so they'll be flush when soldered into the learning sensor. "H", "M", and "L" go to the red, green, and white LEDs respectively.
To embed the LEDs into the underside of the acrylic, measure and etch three rectangular bevels. There are three more on the other side in case the future me wants indicators there too. Drill holes for the learning sensor too.
Next, cut out three doughnuts that will be stacked up to clear the battery holder.
Some LEDs don't have indicators to tell which end is which. Connect a 3V battery to each one, and mark the minus... it makes things much easier.
Prepare the wires by stripping and tinning them. The exposed wires are very short so they'll be flush when soldered into the learning sensor. "H", "M", and "L" go to the red, green, and white LEDs respectively.
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