I have an earlier version without the movement sensor. It does not work too well in far-out places, because there is no AC or radio field to trigger the 555. I

I have an earlier version without the movement sensor. It does not work too well in far-out places, because there is no AC or radio field to trigger the 555. I mended this by adding another button connected to USB-minus. My hand now closes the circuit and causes negative edge which triggers the 555.