hi i have tmc2209 v3.0 and i was having trouble with my UART communication and i was reading some articles and and stumbled across this
https://www.reddit.com/r/3Dprinting/comments/y4n8tg/mks_robin_nano_v12_tmc2209_v30_uar
and i was confused if it is real or not if anyone know please let me know
and this also somthing i found in internet
Is your driver made by FYSETC?
yes i don't know that's why i am confused i bought it from
there is no compny name
Many different companies make that driver. So if your driver is a copy the FYSETC circuit then it may be bad but who knows?
I'm not too sure how you would determine if the driver you have is made correctly.
There is a white silkscreen over the entire board which would make it difficult to see the PCB traces.
yes i will try contacting seller if he answers
Even though it may be connected wrong there is a way you can still make it work
Which Arduino are you using?
If an UNO use software serial and connect like this
You are writing I was having trouble. Does this mean you solved the troubles?
If not you should post a detailed description of what the trouble is.
What do you observe?
In the link this picture is junk
bad angle not really to see what this guy did.
And it makes aboslutely no sense to shortcut the external clock-input CLK for the chopper with the Rx-pin
I guess this is a very crude way to do what is described in the datasheet:
Hi,
You are connecting,
Tx of the controller to Rx of the TMC.
Rx of the controller to Tx of the TMC.
Can you please post a copy of your circuit, a picture of a hand drawn circuit in jpg, png?
Hand drawn and photographed is perfectly acceptable.
Please include ALL hardware, power supplies, component names and pin labels.
What model Arduino controller are you using?
https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum
Thanks... Tom.. 
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