I heard that the ESP32-WROOM-32UE has been revised as a security measure. problem Vulnerability to physical attacks on older products https://limitedresults.com/2019/11/pwn-the-esp32-forever-flash-encryption-and-sec-boot-keys-extraction/ If the following conditions are met, Shipped in the past The o...

Thank you very much for contacting me. This problem Is it possible that there is a shortage of current? The power supply is 500mA. However, other microcomputers are connected. Main body from the outside There is no blame for being touched Only communication from the ESP32 to the server Because there...

ESP32-WROOM-32U Stable with mqtt To communicate with the server (AZURE etc.) What do you need? Especially in places where nothing is entered Controlling pull-up Is there anything I have to do? I want to know. Others due to ground problems on the circuit, etc. In the problems that arise If there is a...

detail The program is created with Arduino and I'm writing. Transmission format MQTT am. The following will happen. Operate about 30 units with the same board and the same program, I wrote the program and it worked fine. after that Keep working, About 20 hours later Only one Wifi does not connect. A...