I have these two Arduino Nanos, one with a ruined mini USB port and one with a fried CH340 chip. Both of them work except for those damages, I wonder if I could upload code to these two using a CP2102 module. I tried connecting the RX and TX pins of the two devices and the code cannot be pushed through because reset function on the Arduino cannot be initialized. Manually pushing the reset button doesn't work either. Asking for help on this matter.
show how you done this
With the module you have, it will be harder.
USB-TTL adapters used for Arduino uploads bring along reset which as you know is used to signal the boot loader to listen up.
So you have tried stabbing at the reset button, but more than once it is written
It usually takes several tries to get the timing right
And more than once it has been the cause of much cursing, maybe tears.
So… try more, think of it like a really lame game you are playing. Then buy a new Nano. Take it from someone almost certainly older than you, time is precious and Nanos are relatively inexpensive.
Or buy an FTDI Friend from adafruit.com or a similar meant for programming a USB-less Arduino.
I have not done, but that, when attached properly, should be able to push a sketch into a Nano.
You may need to find and cut a few traces that now connect the microprocessor and the USB-TTL CH340 chip on the board. Say if that doesn't scare you we can help find them and advice the cutting action.
a7
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