The ESP-01 is the perfect tool for one specific job: Turning "dumb" serial devices into smart devices.
| Mode | GPIO 0 | GPIO 2 | GPIO 15 (TXD) | | :--- | :--- | :--- | :--- | | | LOW | HIGH | LOW | | Flash Boot (Run Code) | HIGH | HIGH | LOW | esp-01 datasheet
If you’ve been in the IoT hobbyist space for more than five minutes, you’ve likely seen the tiny, unassuming blue board called the ESP-01 . It’s the gateway drug to Wi-Fi-enabled projects, often costing less than a cup of coffee. The ESP-01 is the perfect tool for one