Question about ESP32-DevKitC V4, WROVER vs. WROOM - Electrical Engineering Stack Exchange
The ESP32 module, a close look at the brain of your dev kit
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pcb - Trying to add Lyontek SPI RAM to ESP32D - Electrical Engineering Stack Exchange
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Let's Play with ESP-WROOM-32 on Arduino (Environment Construction Setup - LED Blinking)
Upgrade ESP32 board without psRAM with 4MB/8MB SPIRAM
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Tech Note 136 - ESP32 Using its 8K of RTC RAM to retain data variables during deep sleep. - YouTube
ESP32 - Wikipedia
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PSRAM on WROOM : r/esp32
