Program an ESP32 chip with an other ESP32 dev board

[danny89]

Hello everyone,

I'm quite new to microcontroller and prgramming. I already flashed some
firmwares (with ESP32 development board) and programmed something for
myself. For my current project (a LED lamp) I need a smaller controller,
because of the limited size. So I decided to go with an ESP32 chip
without the development board. I soldered the needed cables directly to
the chip and connected this to an other ESP32 (development board). I
just want to flash a bootloader and a firmware (WLED) I checked the
soldering and the wiring multiple times, but no success with the
connection. I don't see my mistake and hope somebody can help me out
here.

For programming I exceute

Code: [Select all] [Expand/Collapse]

1. esptool.py write_flash 0x0 bootloader.bin

GeSHi © Codebox Plus Extension

hold the boot- (without resistor) and press the reset button (with 10K
resistor), but I always get no connection.

So my quesstions are:
Is my wiring correct?
Is there an easier way for just programming the controller?
Is my command correct or do I have to use some special parameters
(couldn't find anything in the manpage)?


Thanks in advance,
Danny


PS: I've attached a schema of my wiring.

The chip wiring is:

TOP:
TX -> TX of dev board;
RX -> RX o dev board;
GND -> reset button

BOTTOM:

GND -> GND;
3.3V - > 3.3V;
EN -> resistor