Hi all,
I'm planning to interface a Teensy 3.5 system to a RAMPS 3D printer type motion driver. The motion system uses a 5V Arduino with a 5 Volt Serial TX/RX communication port.
As the two systems are going to use different wall plugs, different power supplies and long cables, I would like to use an opto-isolated interface with separate GNDs for de level shift (3V -> 5V, 3V <- 5V)
Is there a ‘bidirectional’ breakout board ready to use, with two channels one in each direction?
Or can someone recommend me a simple schematic preferably with thru hole components?
Speed is not critical, a baud rate of 9600 bps would be enough.
And another question: When a Serial port is idle between transmissions, is the inactive TX pin HIGH or LOW?
Many thanks
I'm planning to interface a Teensy 3.5 system to a RAMPS 3D printer type motion driver. The motion system uses a 5V Arduino with a 5 Volt Serial TX/RX communication port.
As the two systems are going to use different wall plugs, different power supplies and long cables, I would like to use an opto-isolated interface with separate GNDs for de level shift (3V -> 5V, 3V <- 5V)
Is there a ‘bidirectional’ breakout board ready to use, with two channels one in each direction?
Or can someone recommend me a simple schematic preferably with thru hole components?
Speed is not critical, a baud rate of 9600 bps would be enough.
And another question: When a Serial port is idle between transmissions, is the inactive TX pin HIGH or LOW?
Many thanks