Having problem with DFR0548 and DC micro motor control
Cotherel.Guillaume 2024-02-26 06:59:13 470 Views1 Replies Hello. I have a problem to drive DC micromotor
If i use a laboratory stabilized power supply like this in photo, the motor is correctly driven.
But if i use the USB power supply or a 3.7V lipo battery, the moteur doesn't works.
The led shine faintly and the motors makes a little electric noise.
I buy the motot on aliexpress. it is the 720 model
Tension: DC3.7V
Courant: 0.1A
Vitesse: 45000 RPM
Poids: 3g
Durée de vie: 15000 heures
(https://fr.aliexpress.com/item/1005004578501012.html?spm=a2g0o.order_list.order_list_main.34.5eb05e5bPcy0hN&gatewayAdapt=glo2fra)
Is someone can help me?
Thanks
This looks like a battery issue, are you able to power it with an AA battery pack? Because the 3.7V Lipo is very close to the 3.5V minimum.
Also the battery will cause a voltage drop for the motor driver chip.
Typically, 3 AA batteries outputting 4.5V is able to make the whole system work.
AA battery holder:
https://www.dfrobot.com/product-2649.html
Yeez_B 
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