Update README.md

Author: askuric

README.md

@@ -1,2 +1,13 @@
-# SimpleFOC-StepMini
-A miniature Stepper driver board based on the DRV8844
+# SimpleFOC StepMini
+
+This is a miniature Stepper driver board based on the DRV8844 driver intended to be used with the SimpleFOC library.
+
+### Main features
+- DRV8844 based - [datasheet](https://www.ti.com/lit/ds/symlink/drv8844.pdf)
+- Power supply: 8-35V
+- Max current: 2.5A per phase
+- Onboard 3.3V LDO
+- Small size 26x21 mm
+- Fully compatible with the SimpleFOClibrary
+Fully open-source: EasyEDA link
+Low-cost: JLCPCB production cost ~3-5€