I have an apple II, arduino mega, and a modern PC all wired up the RS232 out of the apple hits a MAX232 and goes into the serial 1 of the MEGA, the MEGA then simply spits out what it reads on serial one back to the PC the problem is its printing out wrong values, I hit H on the apple and it spits …

Confused with serial

Osgeld September 22, 2012, 7:34pm 15

top trace is on the RS232 side, bottom trace is on the ttl side, hitting the H key

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