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But probably you will need CH340 serial drivers which are hard to find once I had detection problem with cheap Chinese Arduino nano boards which had CH340 chip on it.
Correction in the schematic of circuit:- The LED is supposed to be connected in reverse manner.(if you're using NPN transistor) i.e. anode to the emitter of transistor and cathode to the collector of transistor or vice versa if PNP transistor...
Works like charm....I salvaged ferrite toriod from CFL ballast circuit and made 10 turnes on it... Ive used 2n2222a transister and high intensity red led from old broken computer mouse.. the circuit works on old batteries to suck out every joule of energy from it.