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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@DrAzzy
Are there any components on the underside of that? Specifically, is there anything black with three pins? I found another picture of what I think is the same board with nothing on the underside.
If not, there's no drive transistor. The description suggests that as well.
It claims 15-20mA to turn on which is possible from the Espruino board, barely... When just power and ground are connected, is the "in" pin at 5v or 0v?