Ai-Thinker
Note: You can’t use USB to TTL 3.3V or 5V power supply, it is recommended to use two dry batteries or after conversion through the LDO 3.3V, it is strongly recommended to buy a new development board. Figure 4.1 Typical application of ESP-01 Figure 4.2 Typical application of ESP-01S Figure 4.3 Typical application of ESP-01M
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