The resistor on the PCB is unusual. Nearly like a style mistake, unless it’s planned as some kind of fuse if the chip stops working. It truly seems like it was meant to restrict the LED current.
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Considered that these originated from an extra pound store (UK buck shop) I had not been anticipating way too much, also if they did set you back a little bit greater than an extra pound. When I attempted one out it had the direct uniformity of electroluminescent cord, yet with an LED resource.