Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

[seaad]

5 conns
But still Pierres repetition frequency is 5 Hz !

[r2fpl]

I found problem L298n.

When connect 2 channel (ex. coil1 and coil2) Voltage is different beetwen them.

I change L298n to another new. I changed coil 1-2, 2-1. Still channel 1 is more voltage to 2 channel less voltage !

1 = 0.56 ohm
2 = 0.56 ohm

When driver no load, voltage is equal.

Solution:
join 2 channel together and make one L298n for 1 coil

calibrate voltage used PWM. this method takes 2 pin arduino more. Total 6 pins on 2 channel.

https://youtu.be/_jbd0DPaQg0


I think this driver is very poor for our applications.

temp 80C about 5 minutes work.

[r2fpl]

I redraw H bridge for Arduino.

Maybe replaced this mosfets to multi mosfet ? I write few post later.

[r2fpl]

L298n - test 2 channel witch 1 coil

There is still a difference on the channels although it is the same coil.

https://youtu.be/hvrPy_lQfDI

[r2fpl]

L298n - and another problem.
Overheating 85C ! destability output. We needs better cooling for this driver.

https://youtu.be/TgLBk3GdHSA