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Espressif Systems
ESP8266EX
Hardware User Guide
3.3. Typical Applications Using ESP-LAUNCHER
3.3.1.
ESP-LAUNCHER Test Board
There is one test board on each ESP-LAUNCHER development board, which is shown in Fig. 16
below. The external size of the test board is 20mm*31mm. An 2DBi SMA antenna or other testing
equipment can be connected with the test board via the SMA antenna connector. The spacing of
inserting needles on the test board is 2.54mm, which can be easily inserted into breadboard for
testing.
Figure 16 ESP-LAUNCHER Test Board
3.3.2.
SMD Module ESP-WROOM-02
The pin definitions and distribution of the SMD Module is illustrated in Figure 17. The external size of
the module is 18*20mm. The type of flash used on this module is an SPI flash, the package size of
which is SOP8-150mil, the antenna applied on this module is a 3DBi PCB-on-board antenna.
Figure 17 Illustration of SMD Module ESP-WROOM-02
Espressif Systems
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Jun 1, 2015
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