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janick / WT32-SqLn

Getting started with Wireless Tag's WT32-SC01 Plus using SquareLine Studio and LVGL
MIT License
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connection diagram of the programmer #1

Closed kraa965 closed 1 year ago

kraa965 commented 1 year ago

Hi, thanks for your article, it helped me a lot to figure out that usb-c was not created for downloading a sketch But I have a question, how to connect the programmer in wt32-sc01 plus image it seemed to me mlm on the attached screenshot, you have changed the rx and tx places, could you attach a clear connection diagram of the programmer? and I understand that you are powering wt32-sc01 plus from 3v3?

janick commented 1 year ago

If you read the text in the 1st paragraph here it says to connect Tx with Rx, Rx with Tx, GND with GND, and GPIO0 with GND.

WT32-SC01 Pin Serial Board Pin Remark
5V VCC Optional but not sufficient to power WT32
Tx Rx Max 3.3V
Rx Tx Max 3.3V
GND GND
GPIO0 GND

It also says (just below the photo) that you cannot power the WT32-SC01+ from the serial programmer because there isn't enough ooomph. You have to power it from its own USB-C port. The 3.3V selector is for the TTL logic value, and like all ESP32 signals, the TX/RX signals are 3.3V not 5V.

kraa965 commented 1 year ago

thank you, I really appreciate the explanation