So looking at the schematics for the 2004 controller adapter and the RAMPS 1.4. If I don't get the SD card, that's fine, I can pump it out via a serial connection to a laptop for data collection. If I can use the SD card slot as well, this would be used for logging the data for later analysis. The idea is that I'll be using the Arduino with a couple of MAX6675 sensors to read a pair of type K thermocouples to monitor my car's exhaust gas and coolant temperature at the turbocharger, along with the output of a wideband O2 sensor, MAP sensor, and a few of the on-board ECU's diagnostic outputs for things like fuel trim compensation, injector duty cycle, vehicle speed sensor and airflow meter to get various performance metrics. ![]() (For those who care what the end result will be) SD card write access isn't a must for this, but would be a huge bonus if I can do it. My requirements are to be able to use the 20 by 4 text output and to be able to read the rotary encoder, encoder pushbutton, and possibly the reset button. (Seems unnecessary, but I have at least 2 spare RAMPS shields as well.) I have a few of these controllers, and a use for them that doesn't involve 3D printing, so I have zero need for the Marlin firmware, though if need be, I CAN use a RAMPS shield to connect it. ![]() ![]() Not sure if the OP has made any progress on this in the last 3 months, but I'm interested in doing something this as well.
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