Difference: TheHardware (23 vs. 24)

Revision 242022-08-24 - UliRaich

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The Hardware

The CPU card

The ESP8266 CPU card has the following pinouts:

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There are two different ESP32 CPU cards available for the WeMos D1 mini bus. The first card is based on an ESP-wroom-32 CPU while the second one uses the ESP-wrover-b chip.

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The ESP-wrover-b additionally has 8 MBytes of external PSRAM (of which only 4MBytes are accessible at a given time)

Here are photos of the boards:

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ESP-wroom-32

ESP-wrover-b

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ESP-WROOM-32

ESP-WROVER_B

For more details, please read the datasheet:

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