Hi,
I am trying to build a magnetic stirrer.I started to the project 2 weeks ago and have made progress on the magnetic stirrer project and it is almost ready. I am sharing the photos of my progress and simple Arduino code that I tried to start motor, (https://we.tl/t-YvxSq3FNpA) . I designed a small wire winding system, used 0.50mm non grain oriented electrical steel sheet, 0.45 mm enameled copper wire and 24 awg cables. Motor consist of 6 coils each length is 20mm and diameter of the washers are 15mm. I also attached leaf shaped sheets which oriented inward. I do not know they are necessary but schematic of stirrers that I viewed on the internet, have these ones. I guess its for arranging the movement of magnetic stirrer bar. I really wonder your opinion for that. Also each coil has 546 turns(13 layersx42 turns in each layer). After I finished my set up, i feed one of phases with 10 volts and each phase draw 0.5 Amp. When I put stirrer bar on the plate, opposite sides get oriented. Besides that, I decided to change 24 awg cables with 16 awg. Finally, I bought a 40Amp ESC module and tested it with Arduino. But stirrer bar just vibrates and stops after few seconds. I checked the motor connections again and again but everything seems fine. I tested the system with a bldc drone motor, it works. But when i connect the stirrer, I get this result; (https://we.tl/t-2FTc3GXeIR). Then i connect 12volts 40 amp psu, but result was same. Can I learn your thoughts about the problem?
Thanks!
/*
Arduino Brushless Motor Control
by Dejan, https://howtomechatronics.com
*/
#include <Servo.h>
Servo ESC; // create servo object to control the ESC
int potValue; // value from the analog pin
void setup() {
// Attach the ESC on pin 9
ESC.attach(9,1000,2000); // (pin, min pulse width, max pulse width in microseconds)
}
void loop() {
potValue = analogRead(A0); // reads the value of the potentiometer (value between 0 and 1023)
potValue = map(potValue, 0, 1023, 0, 180); // scale it to use it with the servo library (value between 0 and 180)
ESC.write(potValue); // Send the signal to the ESC
}
