add tips stepper

docs/Instruction/tips/stepper_TMC2208.md

@@ -56,8 +56,72 @@ VREF       |(RMS Current x 2.5)/1.77 |(0.39 x 2.5)/1.77 = 0.55|0.55 x 0.9 = 0.49
 ![](../images/stepper/vref_hole.jpg){width=300}
 ![](../images/stepper/vref_screw.jpg){width=300}
 
+### test 1
 
-### Arduino
+[SilentStepStick TMC2208 Stepper Motor Driver
+](https://shop.watterott.com/SilentStepStick-TMC2208-Stepper-Motor-Driver)
+
+Ref. [GitHub project page](https://github.com/watterott/SilentStepStick)
+
+Download TMC220X.ino from [here](https://github.com/watterott/SilentStepStick/blob/master/software/TMC220X.ino)
+
+```
+/*
+  SilentStepStick TMC2208/TMC2209 Example
+  Rsense: 0.11 Ohm
+  Other examples/libraries can be found here:
+  https://github.com/teemuatlut/TMCStepper
+  https://github.com/trinamic/TMC-API
+  https://github.com/manoukianv/TMC2208Pilot
+  Example source code free to use.
+  Further information: https://learn.watterott.com/license/
+*/
+
+// Note: You also have to connect GND, 5V/VIO and VM.
+//       A connection diagram can be found in the schematics.
+#define EN_PIN    7 //enable (CFG6)
+#define DIR_PIN   8 //direction
+#define STEP_PIN  9 //step
+
+void setup()
+{
+  //set pin modes
+  pinMode(EN_PIN, OUTPUT);
+  digitalWrite(EN_PIN, HIGH); //deactivate driver (LOW active)
+  pinMode(DIR_PIN, OUTPUT);
+  digitalWrite(DIR_PIN, LOW); //LOW to CCW
+  //digitalWrite(DIR_PIN, HIGH); //HIGH to CW
+  pinMode(STEP_PIN, OUTPUT);
+  digitalWrite(STEP_PIN, LOW);
+
+  digitalWrite(EN_PIN, LOW); //activate driver
+}
+
+void loop()
+{
+  //make steps
+  digitalWrite(STEP_PIN, HIGH);
+  delay(2);
+  digitalWrite(STEP_PIN, LOW);
+  delay(2);
+}
+```
+
+#### Connection
+
+![](../images/stepper/test_1_connection.jpg)
+
+Connect to |LEFT  | TMC2208   |Right  | Connect to
+--:|--|:---:|--|--
+Uno_7</br>-</br>-</br>-</br>-</br>-</br>Uno_8</br>Uno_9  |En</br>MS1</br>MS2</br>UART</br>PDN</br>CLK</br>Step</br>Dir  |![](../images/stepper/tmc2208_back2.jpg){width=120}|VM</br>GND</br>M2B</br>M2A</br>M1A</br>M1B</br>VIO</br>GND|Supply(12V(+)) & CAP100uF(+)</br>Supply(-) & CAP(-)</br>Moter(Blue)</br>Motor(Red)</br>Motor(Green)</br>Motor(Black)</br>Uno_5V</br>Uno_GND
+
+#### Result
+
+Worked!
+
+
+
+### Test 2
 
 #### Library