32x16 RGB LED Matrix not lighting up correctly
![userHead](https://dfimg.dfrobot.com/dfPortrait2.png)
Hi,
I purchased this board: SKU_DFR0471
After connecting the pinouts as follows
32x16 Matrix Board UNO
1 2
2 3
3 4
4 GND
5 5
6 6
7 7
8 GND
9 A0
10 A1
11 A2
12 GND
13 8
14 A3
15 9
16 GND
When I run Sample Code 1 and Sample Code 2, only the bottom half rows light up (see attached), neither sample code works as expected.
Please help!
Thanks
![icon](images/icon_file.png)
![icon](images/icon_file.png)
![icon](images/icon_file.png)
![icon](images/icon_file.png)
![icon](images/icon_file.png)
![icon](images/icon_file.png)
![icon](images/icon_file.png)
2023-02-21 09:22:52 ![](https://dfimg.dfrobot.com/nobody/makelog/2be3401f18e7fc5c22bca73330ce5fd4.png)
![](https://dfimg.dfrobot.com/nobody/makelog/010048964d8065d66116e055910c55db.png)
NeloKin
Hi
I have checked the wiki of this module, did you connect power supply here? You didn't mentioned in your connection.
![](https://dfimg.dfrobot.com/nobody/makelog/2be3401f18e7fc5c22bca73330ce5fd4.png)
Also, It needs an external power supply, did you added on your arduino board?
![](https://dfimg.dfrobot.com/nobody/makelog/010048964d8065d66116e055910c55db.png)
Hope it can help.
![userHeadPic](https://dfimg.dfrobot.com/dfPortrait2.png)
2023-01-27 17:36:04
charlotte.amylia
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![userHeadPic](https://dfimg.dfrobot.com/dfPortrait2.png)