M5Stack Stepper Motor Driver Board For Arduino ESP32 GRBL 12C Step-Motor MEGA328 Items Description: 1. This module contains a MEGA328P, equivalent to Arduino UNO, which runs the modified GRBL library (open source) and communicates with the host CORE through I2C. GCODE can be sent to GRBL through I2C. 2. The default I2C address is 0x70. In principle, a host can connect multiple STEPMOTOR modules, and users need to modify the address, compile and burn it themselves. 3. Adopting high-quality DRV8825 module, the peak current can reach 1.5A. Package: 1 x ESP32 Board Shipping Policy: Item will be shipped within 1-5 working days after full payment is received Economy Shipping: 15-50 business days Standard Shipping: 10-35 business days Expedited Shipping: 3-7 business days Note: Average delivery time for reference only, actual time varies for different countries and related to uncontrollable factors such as weather weather / custom and holidays. Terms of Sale: - 30 Days Free Return and Money Back - If you are not satisfied with your purchase, you can return the item with original packaging back to us for full refund, not any re-stock fee, the return cost should be paid by buyer. - If you receive any wrong items, or damage during the transportation or defect items, we will accept the return and pay the return freight, Please noted that the return cost should be prepaid by buyer, we will issue the refund of return cost to buyer after inspecting the faulty item. - Please kindly contact us before return, our representatives will send you the detailed return instruction. - The guarantee will be only for the cost of the item, we will not responsible for installation or other fees like labor expenses, towing expenses, additional repair expenses or other related expenses. Customer Service: Contact us if you have a complaint, or plan to leave us a negative or neutral feedback, please contact us and we will be glad to help solve the problem. We reply your message within 24 hours, thank you!