TMC2208 Klipper Unable to read tmc uart 'stepper_x' register IFCNT about fysetc-spider

[GerogeFu]

You need to solder the 3 pad to join them together.

[msazanov]

I know about the jumper and it has been sealed for more than 3 years :) Previously, I used these drivers on the MKS GEN-L there was made a splitter with a resistor going to the UART pins (RX and TX) If you look at the Spider v1.1 circuit from the PDN contact (for example, motor x) there is one wire that goes directly to PE7, it seems to me that this may be the problem, but I'm not sure.

[msazanov]

Found a solution! for the tmc2208 drivers from fysetc, the UART is on pin 5, when on the spyder PDN board pin 4. To fix this problem, it is enough to solder pins 4 and 5 from the driver together.
PS: on this driver pin # 4 is NC and is not connected to the chip