On 2016-02-05 11:44, robb wrote:

i've discovered 5v (arduino) to 3.3v (esp8266) serial requires a logic level shifter.

i have a max3243 with no idea how to use it.

anyone know how to use a Multichannel RS-232 Line Driver/Receiver or

know a good circuit schematic that converts 5v-3.3v logic?

thx

~r

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