Hey guys, i've completed my programming and now am making my own breakout board since i've used the L298N module during prototyping. I'm pretty sure my programming part is perfect. However i can't seem to get my board working. It kept showing very low voltage(1-2V) on OUt1 and Out2 and >1V at OUt3 and Out 4. I've only seen 800mV at 5v VCC ): Not sure what is the issue here. Any help would be appreciated.
The following is my schematic where the input pins are connected to the pinhead "TOMCU"
I have also connected Vcc (9) to Gnd through a 100nf capacitor. The input voltage is 10V.
Oh yes, the diodes should be connected this way. I've got some schematic reference from others as well. Did google "l298N breakout schematic" and all of them are about the same. Not sure what is happening.
I'm asking if you have actually put them on the board as drawn in your schematics (which is correct indeed).
If they aren't, you'll generate a short to that power rail, and you will measure the voltage drop over the diode.
MAS3:
I'm asking if you have actually put them on the board as drawn in your schematics (which is correct indeed).
Yes, i did check and also replace the L298N chip. I'm not too sure what to do with VCC so i've connected it to 100nf ceramic capacitor to ground. The arduino is also sharing common ground.
MAS3:
What are you measuring and expecting to see ?
You need to supply 5 volts there.
It is the power supply for the logic.
What input voltage is 10V ?
See above.
Hey MAS3
Thanks for answering me; the issue was that i did not connect Vcc to 5V source. i've never thought it would be considered as an input to power the logics internally. I've just remembered that the L298N module i've bought for prototyping has an onboard 5V reg to supp it to Vcc pin. Thank you so much for helping me see what i could not have realised for so long. Thank you very much!
