As far as wave shaping, couldn't it be done with an RC filter. All its really doing is creating a non-digital type signal correct? a little slope on either side of rising/falling edge? Or am I offbase with that train of thought? Also. whats the cutoff voltage, I know it expects ~7vdc as high with a separation state of 3.5vdc, but is 5vdc enough to get the job done, say with an "off-the-shelf" unit like the arduino? Just spitballing here so feel free to correct/educate me. Im not new to embedded controls, but I am still learning the j1850 VPW setup.

Bud