KC868-AG board type

[powerup]

Hi,

i am programming myself the KC868-AG, i bought 2 units. 1 of them died after 1-2hrs, the other unit is working fine. The first one is giving USB device not recognized. Same cable is working fine for the other device.

Q1: what chip do I choose for this device.
Q2: what is the memory limit of this device, does it have enough space for OTA updates and save many RF signals?

Thank you.

[admin]

AG use by ESP32-WROOM-32E, 4M memory. it's enough.

[powerup]

i choose NodeMCU-32S is it correct? or ESP-WROOM-DA is better?

[admin]

i choose NodeMCU-32S is it correct? Yes