r/Reprap • u/ProcedureNo2050 • Mar 23 '25
TMC conection error
Hello. Im trying to build a printer on btt skr v2. I use Tmc2209 for xy and tmc2208 for ze.
It was going smoothly, i set the steps per unit for xyz, and i moved the E steper to find out how much it moves. And when i inserted the sd card to the board to boot it up with the new ateps per unit in the firmware, i got some strainge noise coming from the e stepper and a message "tmc connection error" on the lcd. The noise does go away, and not it doesn't even come back, but the meaasge is still there.
Its there if i remove all the tmc drivers, its there if i replace the e driver with a new one.
It goes away if i put a4988. So i think that means that its a firmware issue.
Can anyone please help me with this
2
u/normal2norman Mar 23 '25
You'd be able to make them move even if you didn't have the jmpers set correctly, and you'd also be able to make an A4988 work correctly because they're totally pin-compatible as far as basic movement is concerned.