Hello from Greece
Not sure if this the right place to write this post but as a new member the site doesnt allow me to make new post on Project Discussion Category...
I have a ToorX treadmill that is not much famous as a brand and have the Control Board damaged cause of a shorted IC microcontroller that I saw smoke from it...
The Motor Control is still functional but I need I was to control it... I bought yesterday a new Arduino UNO R4...
The Motor Board of the treadmill model is SW03-CA-REV1.0 (also not a famous PCB so no schematics found)... I post a photo of the board and a sketch draw I made with a few informations that may help you understand the PINOUTS that I have no idea what they are... The Motor board has 5 Pins to connect with the Control Board long cable but from these 5 pins only 4 are inside the long cable so this is the way I did the draw of the sketch too...The colors of the pins I draw are the colours of the cables ...So the 4 pins (they are 5 as I said but no cable connects the second) of the Motor Board from right to left are 1 Black 2 Red 3 Green and 4 White... Each time I short pins 1 (black) with 3 (Green) I hear a click noise from the board's Relay and a red lights turn on with means it gets ready for a signal of START button to begin the mottor to spin, but I have no idea what to do and what to connect to start the motor spin and then control its speed...
I upload the photos ...
Thanks in advanced 
)
I update my post saying that the MOtor Board pcb has a microcontroller on it that when I removed the sticked I say its model is EM78P459AKJ-G
From the datasheet I found the pinouts of the chip
I would like to know if I can connect Arduino Uno R4 with the right Pins of the microcontroller (I dont know which pins to connect and where) so I control the motor speed as I like etc...
Thanks Again