20 May
2011
20 May
'11
7 p.m.
With a 7805 and max232, it looks like it is probably 5v (the circuit is using the R2OUT/T2IN pins, which are Vcc, so 5v). A MAX3232 with something like a LM2940-3.3 would probably be a *much* better option, and give you real 3.3v.
Loki
On Fri, May 20, 2011 at 7:43 AM, wpatan wpatan@gmail.com wrote:
Please double check if your cable's output is 3.3v... this circuit could fry your phone. The output of MAX232 should not exceed 3.3v
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