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MarginallyClever / MDB-Sniffer

Sniff a Multidrop Bus data stream and make it human readable
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Why two arduinos? #1

Closed asiniy closed 6 years ago

asiniy commented 9 years ago

It seems you can use just one arduino mega with two serial connections: 1 to pc, 1 to vending periphery

perdidor commented 6 years ago

it's enough to use only ONE Atmega1284, key to success is two hardware UARTs on chip. See my comment in other thread of this repo, it contains youtube link.

i-make-robots commented 6 years ago

two arduinos was what I had at the time. two arduinos was cheaper than one mega. IIRC I was told by others that one mega could not successfully talk to the VM and the PC at the same time, the clock was not fast enough. I didn't independently verify that claim.