ESP_Sprite wrote: ↑

Tue Feb 02, 2021 7:34 am

No, the inputs do not have Schmitt triggers.

thank you

Hello! Tell me please, Is Schmitt triggers in pins of esp32 or need set external? It is need for connection of optocouple

You can connect it to ground, or you can decide not to connect it. From the datasheet : 'Soldering Pad 39 to the Ground of the base board is not necessary for a satisfactory thermal performance. If users do want to solder it, they need to ensure that the correct quantity of soldering paste is appli...

Hello! Guys, please, tell for what using need this pads under esp32-wrover-b? I suppose it is ground's pads. How do they use?

It probably is highly recommended because the antenna connects there, which indicates that the RF Unit is also placed somewhere on the top right of the ESP Module. So when placed on the corner of the PCB theres no other component around which could induct signals into the antenna/rf unit Thanks! So...

Hello! I use ESP32 WROVER-B. Sorry for my english. Found in "ESP32 Hardware Design Guidelines" (page 10) recomendations for position of esp32 on board. esppositiononboard.jpg Tell me please why 3, 4 position highly recomended? It is because to the right of the esp32 do not recomend place any compone...

ESP_Sprite wrote: ↑

Mon Feb 03, 2020 3:42 pm

Thank you! Anyway i refused that idea by reason that i don't need sd card for mobile programming esp32 because i got knowledge about OTA programming! esp32 can programming through Wi-Fi it is awesome

ESP_Sprite wrote: ↑

Sat Feb 01, 2020 4:56 pm

If you mean 'instead of the internal SPI flash', that's not possible, period.

thank you for reply i just got that idea because i think micro sd card has flash memory and have SPI interface as internal SPI flash memory has... Tell me please why it is not possible?

Sorry for english and i am not very good in esp32. I use ESP-32 WROVER-B 16MB I want to use micro sd card as main memory and will connect paralelly with internal flash besides CS pin what give me set new flash instead internal. I have yet two questions. 1) What the maximum size of micro sd card can ...