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PIC16F877A interfacing with a nokia 3120

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lginside

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I need to send AT commands to my nokia 3120 via a pic16F877A. Since the Pic emits only 0 - 5V as outputs, do I have to convert my 5V output signals from the UART to 3.3V? If so can anyone suggest a proper circuit or an IC to implement this 5V <-> 3.3V conversion? Thank You! :D
 

try grounding ur 5v line with 3v3 zener diode.

i made long time back pic based nokia (3310) sim unlocker, and used 3v3zn

br
hobbiest_2k3
 

    L

    lginside

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hobbiest_2k3 said:
try grounding ur 5v line with 3v3 zener diode.

i made long time back pic based nokia (3310) sim unlocker, and used 3v3zn

br
hobbiest_2k3
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Thanks! Will try this. :D
 

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