ESP-01 DAT
hardware
ESP-01 (obseleted, without suffix S)
- GND - Ground
- GPIO2 - General Purpose Input/Output
- GPIO0 - General Purpose Input/Output (Used for boot mode too)
- UXRXD - Receiver (for serial communication)
- U0TXD - Transmitter (for serial communication)
- CH_PD - Chip powerdown
- EXT_RSTB - Reset
- VCC - 3.3v input voltage
Pin left | Pin Funcs | Pin Right | Pin Funcs |
---|---|---|---|
UXRXD | Receiver (Serial) | VCC | 3.3v input voltage |
GPIO0 | General Purpose IO (Used for boot mode too) | EXT_RSTB | Reset |
GPIO2 | General Purpose IO | CH_PD | Chip powerdown |
GND | Ground | U0TXD | Transmitter (Serial) |
- on board LED : The blue LED on the ESP-01 module is connected to GPIO2 (UART0_TXD)
ESP-01 SCH
arduino uploading
- debug set to serial1 or disable
- crystal 40M
- flash 26M
- DOUT
- v2
- buildin LED = 2 or else