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DRV8833 Not Working
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

DRV8833 Not Working

by tskrandom on Fri May 29, 2020 12:17 pm

Hi, I've bought a DRV8833 recently but can get it working. My setup is described as following and also shown in the attached photo:

Arduino Uno Digital Pin 9 is connected to Bin 1
Arduino Uno Digital Pin 10 is connected to Bin 2
The positive and negative ends of the DC motor is connected to Bout 1 and Bout 2
A positive end of a 9V battery is connected to (+) of DRV8833
The negative end of the 9V battery, the GRN and the (–) of DRV8833, and the GND of the Arduino is all connected to a common ground
The Arduino is powered by USB connected to a laptop

My code is as simple as following:

#define Bin1 9
#define Bin2 10
int speed = 0;
void setup() {

pinMode(Bin1, OUTPUT); //Bin1
pinMode(Bin2, OUTPUT); //Bin2
}
void loop() {

digitalWrite(Bin1,HIGH);
digitalWrite(Bin2,LOW);
delay(700);
}

Do you know where the problem is? Thanks in advance for answering.
Attachments
IMG_6925.JPG
IMG_6925.JPG (547.26 KiB) Viewed 73 times

tskrandom
 
Posts: 3
Joined: Fri May 29, 2020 12:05 pm

Re: DRV8833 Not Working

by adafruit_support_bill on Fri May 29, 2020 12:29 pm

The solder joints on the DRV8833 do not look like they have flowed onto the solder pads.

This guide has some tips on identifying and fixing common soldering problems:
https://learn.adafruit.com/adafruit-gui ... n-problems

adafruit_support_bill
 
Posts: 78759
Joined: Sat Feb 07, 2009 10:11 am

Re: DRV8833 Not Working

by tskrandom on Thu Jun 04, 2020 9:54 pm

Hi, I solder the pins again but it still doesn't work. Is there any other possible issues that have occurred? For example, is it possible that the heat of soldering burns the breakout board (I use around 325°C)? Thanks ...
Attachments
IMG_6986.JPG
IMG_6986.JPG (998.64 KiB) Viewed 57 times

tskrandom
 
Posts: 3
Joined: Fri May 29, 2020 12:05 pm

Re: DRV8833 Not Working

by tskrandom on Thu Jun 04, 2020 10:22 pm

For anyone facing the same issue, I solve it by connecting the SLP pin to digital HIGH then it works ...

tskrandom
 
Posts: 3
Joined: Fri May 29, 2020 12:05 pm

Re: DRV8833 Not Working

by adafruit_support_bill on Fri Jun 05, 2020 5:26 am

Good to hear you solved it. Thanks for the update.

adafruit_support_bill
 
Posts: 78759
Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.