1.According to customer feedback after use, we optimize the product.

2.From T7 V1.4 to T7 V1.5, please see the comparison chart below.

3.The difference between V1.4 and V1.4: GPIO replacement position.

4.Replace the GPIO16 and GPIO17 pins that can no longer be used for external expansion with GPIO25 and GPIO27 that can be used with defined functions, so that they can be compatible with the expansion boards of miniD1, and are not affected by the original GPIO16 and GPIO17 pins.