Pololu Dual G2 High-Power Motor Driver 18v18 for Raspberry Pi/ motor problem

i have a exam tomorrow and the input mA1 ,ma2 don’t work but the mB1 and mB2 work
help please.

je passe mon bac demain et je me sert de la carte pololu , se matin j’arrivais a piloter les deux jeux de roues avec mon controlleur , et sans comprendre pourquoi les ports mA1 ,ma2 ne fonctionne plus . besoin de solution merci.


Your post does not have enough information for me to help troubleshoot your motor driver. Reading through our support page should give you a good idea of the kind of information that would be helpful in troubleshooting.