I built around 40 domotic controllers with the Lilygo T-Eth-Lite (using RTL8201) over the last year and in the last batch of 6 modules I have 2 modules where the Ethernet connection does not or not always work. The previous batch of 10 modules also had 2 non-working modules.

So 4 modules that have ...

MicroController
Which other part would you suggest?

PCA9634 is 8 output, you can drive each channel individual: OFF, FULL ON, PWM or PWM modulated on group frequency by setting 2 bits per channel. You can also choose for open drain or totempole output, normal or inverted.

For 24V relays we use ...

I think the safest bet is using a PCA9634 8 channel led driver chip, uses I2C and it is fully programmable

I use it in combination with 4K7 resistor to drive an MMBT2222A to drive 24V relays RT114024 from Schrack or G2RL-1 from Omron

Ooops posted too soon.

Wanted to add that when restarting the ESP32C3 after flashing using hard reset via RTS, there is no problem. In this case the complete cpu will be reset I guess and my pulldown resistor does it's work

Seems like I need to be able to put the IO pin coupled to the RTS function ...

Hi,

I use an ESP32 to interface with a master-slave RS485 bus.

Upto now I had implemented a master device (using ESP32 WROVER) and everything works fine. My proprietary low level ISR driver for the UART controls the RTS signal (connected to the DE input of an ADM3072) so we can avoid interference ...

I have following in use:

GPIO39 = I2C SCL
GPIO40 = I2C SDA
GPIO33 = RS485 DE
GPIO43 = RS485 TX
GPIO44 = RS485 RX
GPIO0 = input button
GPIO21 = RMT led

But after consulting the ESP32-S3 datasheet I notice that GPIO33-37 (not GPIO35-37) are used by octal SPI, so GPIO33 will be the problem.

I ...

Meanwhile trying to isolate the problem...

In sdkconfig under "ESP PSRAM" you have the option "SPI RAM access method"

When I set this to "Integrate RAM into memory map" and recompile + reboot -> no crash but the PSRAM memory is not reported as available in FreeHeap space and thus a lot of memory ...

Hi,

I have ported my domotic controller (Phc2Mqtt) from ESP32-WROVER to ESP32-S3R8 with some small modifications for the IO ports and it runs fine on a Waveshare ESP32-S3 Eth board (using W5500 SPI ethernet module).

The webinterface and logging works, settings are stored and retrieved to/from NVS ...

Thank you for the response.

However, I find the proposed workarounds a bit over the top.

Certainly given the fact that this worked just fine with esp-idf 4.x on one hand, on the other hand, we are not talking about big data that we are sending.

After sending 160 bytes to the UDP socket things ...