search

gianluca-nitti / printserver-esp8266

GNU General Public License v3.0
168 stars 33 forks source link

Missing labels and connections on fritzing-usb-ch375.fzz #22

Closed bobbygituser closed 1 year ago

bobbygituser commented 1 year ago

On the fritzing file for the USB connection using CH375, "fritzing-usb-ch375.fzz", some of the pins on the CH375 do not have labels. There is also no indication on the connection for the pins between the USB socket and the CH375. Please help to clarify these.

image

gianluca-nitti commented 1 year ago

The reason is that the CH375 part in that schematic is not a bare CH375 chip but a breakout board like the one picured below, with built-in USB socket. Thus the pins on the Fritzing part are just the exposed pins on the breakout board.

The unconnected ones are not needed. The chip supports both a serial and a parallel communication mode, and the library used in the sketch only uses the serial mode, thus the parallel data and control lines are left unconnected.

board

bobbygituser commented 1 year ago

@gianluca-nitti thanks for the clarification. not sure if this is nitpicking, but would you kindly reflect that info in the README section? The breakout board / module wasn't apparent in the README nor in the fritzing. It would help new readers and probably deter similar questions to mine.

I would suggest to rename the part as CH375(B) module, or something similar to that.

gianluca-nitti commented 1 year ago

Added a comment in the readme. Thanks for reporting.

Augustoklippel commented 1 year ago

Hi, i has buy a module CH375B equal published image and not working. Can you identify what is pins in fritzing in module?