Only You, or ESP8266 Forever!

[thebestvip84]

hi friend, can you help me, i have:
1. wemos d1 r2
2. CNC shield
3. A4988 driver
4. nema17
5. MPU 6050
6. brobot frame 3D print

Here is how I wired mine after tracking each wemos pin trace to the CNC shield. This is for a Wemos D1 R2. Note that R1 has different pinout.

WEMOS D1 R2 PIN --> CNC SHIELD FUNCTION --> BROBOT PIN
---------------------------------------------------
D0 --> X-STP --> MOTOR1-STEP
D1 --> Goes to SCL and Y-STP --> SCL
D2 --> Goes to SDA and Z-STP --> SDA
D3 --> X-DIR (Jumper with A-DIR to make common DIR pin) --> MOTORS-DIR
D4 --> Y-DIR (use wire to connect with A-STP) --> MOTOR2-STEP
D5 --> Goes to Z-Dir and also spindle direction --> NOT USED
D6 --> Goes to MOTOR ENABLE and spindle enable --> MOTOR ENABLE
D7 --> Goes to X-Lim and Z-Lim --> SERVO1
D8 --> Goes to Y-Lim --> SERVO2


I am using KomX's firmware


The only modification (besides the ones suggested on the thread) are the eX_ESP_pins.h file as follows:

#define MOTORS_ENABLE_PIN D6
#define MOTORS_DIR_PIN D3
#define MOTOR1_STEP_PIN D0
#define MOTOR2_STEP_PIN D4

#define SONAR_TRIG_PIN -1
#define SONAR_ECHO_PIN -1
#define SDA_PIN D2
#define SCL_PIN D1

#define SERVO1_PIN D7
#define SERVO2_PIN D8
#define BATTERY_PIN A0

Try every wiring but the motor even can not move
Best regard!

p/s i notice when set dir pin and step pin to d5 and d6 and do a test code, the motor can spin, but with other pins the motor can not move. I wonder if i have to use a logic converter?

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Then i cut the pin on the cnc that connect to D0 on wemos and use D5 as motor1 step pin, but nothing move. PLease help me solve the problem. Thank you a lot!