Wemos TTGO-XI board features:

• LGT8F328P processor in QFP-32 package
• Holtek HT42B534 USB<>serial bridge
• ASM1117 3.3V linear regulator
• Reset button
• Micro-USB device port
• Dual layer PCB with components on only one side
• Dimensions: 1" by 2" (25.4mm x 50.8mm) (the micro-USB connector extends beyond one end of the board)
• 32 pins in two 0.1" (0.254mm) pitch rows spaced 22.5mm
• Selectable 5/3.3V I/O voltage (by solder jumper on front of board)

Front

Back

Issues

• The builtin LED is on output 12 instead of the standard 13. Use the LED_BUILTIN define.