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But [Neutrino] made his own using an ESP8266 married to a card reader. It all starts with the old trick of soldering a header to an SD card adapter. The USB port is still there, but it is only for ...
A USB connection to a computer is the usual link of choice, unless the RAMPS board has the SD-Card option ... help attach either the ESP8266 WiFi or the HC-05 Bluetooth module to the Aux-1 header ...