3. ESP-WROOM
Espressif provides two types of modules, SMD module (ESP-WROOM-02) and DIP module
(ESP-WROOM-01). The modules have received various adjustments to achieve the optimum
RF functionality. It is recommended to use these modules for test or further development.
3.1.
SMD Module ESP-WROOM-02
The pin distribution of the SMD Module is illustrated in Figure 16. The external size of the
module is 18 mm x 20 mm. The type of flash used on this module is an SPI flash with package
size SOP8-150 mil. The antenna applied on this module is a 2 dBi PCB-on-board antenna.
Figure 3-1: Top View of ESP-WROOM-02
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