Trouble Shooting_Veyron DC motor driver DRI0021/DRI0020

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Equipment：
 

1. Veyron driver broken?
Wiring：

Operation：
Just thrust the KEY to switch to Set mode, wait a seconds, two motors will run. Then prove the Veyron driver is ok. 
 

2. Veyron Serial communication not work?

Operation：
Download the library first and install the library, the sample sketch is in the library.

Note: It's different from the one from the wiki page.(Serial instead of Serial1; set higher speed at 200rpm)

2 Upload sketch “B_CheckSerial”. 
Note: when you are going to upload anything, please unplug the wire on the PIN 0,1.
Open the Serial monitor, choose "57600". 
If you do not see it, reverse the tx&rx sequence and check again.

3 Upload sketch “C_RunMotor”. 
Then you will see your two motors running according to the sketch.