To keep NinjaPCR available to everyone, we decided to upgrade NinjaPCB from version 1 to 2.
This is the system configuration diagram of current NinjaPCR. NinjaPCB ver1 is just an Arduino shield. Arduino UNO communicates with Chrome App via USB cable.
This is the diagram of NinjaPCB ver2. Arduino is replaced to onboard ESP-WROOM-02 which works as Arduino and web server.
So you can control NinjaPCR from any browser on your PC or smartphone.