Comments (3)
RobSmithDev
commented on May 24, 2024
Out of interest, can you share a link to this CH340 nano clone? Im curious to see how CTS is accessed
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mlorenzati
commented on May 24, 2024
Sure, have a look here:
https://cdn.hackaday.io/files/293271254726368/nano_ch340_schematics-rev1.pdf
I added an extra pin to the nano and wired it to pin 9 of ch340
Check that pin 9 (CTS) is near a border of the nano PCB, you can leverage the hole the pcb has there to place the additional pin.
Since as you said arduino nano is just to tight for timing, I moved to Greaseweazel project which uses a STM32F103 Cortex M3 at 72Mhz
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RobSmithDev
commented on May 24, 2024
Discovered that CH340 chips are nasty, so closing this. Please switch to FTDI chips.
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