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Setting up an Electrodragon IoT board with MicroPython

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This post explains how to install MicroPython on an ElectroDragon IoT board using a Raspberry Pi and a USB TTL cable.
ElectroDragon Wifi IoT Relay Boards ElectroDragon IoT boards are built on Espressif Systems ESP8266-12 F microcontrollers which include WiFi and 4 MB of flash memory and can readily run MicroPython. ElectroDragon now offer several configurations. The original AC powered dual relay version is used below. http://www.ElectroDragon.com/product/wifi-iot-relay-board-based-esp8266/
Key SpecificationsBased on ESP-12F ESP8266 Wifi BoardThis relay board use one AC input, and supports two relay AC outputs.Use mature AC-DC power module, input voltage 85 – 265VACRelay: HF32F-G-5-HS, Common – open, 10A 250VAC, 30VDC, Control 5VPlastic enclosure design support, package includes the PCB board, plastic case, and self-drilled screws (screws are not assembled). Case general dimension is 111*42 mm

Primary Header PinsGND 5V GPIO-15 GPIO-00 Button 2 / Flash GPIO-04 GPIO-03 RXD CHPD 3.3V GPIO-13 Outpu…