Hello,
I am restoring a Type A Series 1 printer with a Rumba board. I updated the firmware to 2.0.5.3 and added TMC2208 drivers I'm trying to get UART to work with the driver. It will work with hardware serial, but not with softserial. Using a Y cable connected to pins 63 & 64 I am getting error Testing X connection... Error: All Low. I wanted to use EXP3 on ths board as it has 5 sets of pins for the 5 drivers.
Also another issue, I would like to move the endstops to use interrupts to save some CPU. I have 2 options. Option 1 is to add a hedder and tap into PJ 6 5 4 3 2 or connect them to the unused thermistor pins, which already have pullups and caps. I tried pin 83 in the PINS.h file but it shows as always TRIGGERED. Is this because the pin is configured for ADC? How can I change a pin from analog to I/O OR is this even possible to do on those pins? I would prefer to not solder to the CPU if I don't have to.
Thank You
