WizFi220 power supply problem?

Question

Do it yourself

Given:
Due to work, it is required to start a WizFi 220 WiFi module. In the documentation, I found the schematic diagrams for connecting the module to the UART. Since there was an adapter to FT232 at hand according to the scheme of comrade DI HALT, it was decided to use this particular scheme.
The result was very strange. With all the hold LEDs, the module blinked approximately in the following form: -----1-1--1----- . The documentation did not say anything about this, so I decided to check what was on the oscilloscope. I hook the ground of the probe to the ground of the adapter and bang! The module starts working. Even connects to an access point.
Various schemes:
Diagram proposed in the documentation → link
Diagram drawn by me in Eagle CAD → link
Wiring → link
Result of work → link
Question: Why does this happen and how to get rid of the need to use an oscilloscope every time?

Answer 1

The answer came from a friend with email: [email protected]
Please note that in your diagram, the output of module No. 35 (EXT_RESET) is hanging in the air. And this is not good. I advise you to download the document (AP430) Reset WizFi210.pdf from the manufacturer's website and do as it is written there.
And the flashing of the LEDs in this sequence indicates that the standard setup procedure has been started. Read more on page 30 of WizFi210-User_Manual_EN_V1.11.pdf.
And another tip: do not ignore the legs of CTS, RTS. When working at high speeds without them - nowhere.