11 digital input/output pins
Interrupt/pwm/I2C/one-wire
1 analog input (3.2V max input)
80ma avg current draw peak is 150ma
4M bytes Flash
Built-in PCB antenna
Note: The Mini does not have a connector for the external antenna. If you wish to use an external antenna please purchase the Mini Pro.
Wemos D1 Mini Pro 16MB
Built-in WiFi capability
11 digital input/output pins
Interrupt/pwm/I2C/one-wire
1 analog input (3.2V max input)
16M bytes Flash
External antenna connector
Built-in ceramic antenna
New CP2104 USB-TO-UART IC
Same size as D1 mini