Some converters modules of TTL to RS232 not they should feed externally under any circumstances since they receive the power from port series, and we could burn our WRTNode by supercharging; in our case we will use a converter based on chip SP3232EEN, that if we feed from WRTNode through pin VCC Converter plate.
Moduli baadhi converters ya TTL kwa RS232 si wamlishe nje chini ya hali yoyote tangu kupokea nguvu kutoka bandari mfululizo, na inaweza kuchoma yetu WRTNode kwa supercharging; katika kesi yetu sisi kutumia kigeuzi kuzingatia chip SP3232EEN, kwamba kama sisi kulisha kutoka WRTNode kupitia Bana VCC Kigeuzi sahani.