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(a)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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