4-channel slim ECU with APM32F407VGT6, designed to use RusEFI 4 injection channel 4 ignition channels additional outputs for boost/fuel pumps/idle/etc onboard CAN Hall or external VR conditioner USB-C connection No official firmware for this board (for now) CPU pinout inside "Reference" folder How to open EasyEDA Project File： At editor, open the document via: Top menu - File - Open - EasyEDA... , and select the json file, then open it at the editor, you can save it into a project. 如何使用： 打开编辑器，通过：顶部菜单 - 文件 - 打开 - 立创EDA... ，选择 json 文件打开在编辑器，你可以保存文档进工程里面。