Stuff I'm Up To

Technical Ramblings

Scorpion Lite – ESP8266 — March 27, 2019

Scorpion Lite – ESP8266

Looks like my friend likes to try to go one better. When he saw how I’d taken his original Wake-On-Wi-Fi idea and turned it into project Scorpion he moved to using ESP8266.

At the time I started looking into using a Raspberry Pi for the project I did also look at some very lightweight alternatives using the ESP8266 chip set. These are small devices perfect for use in a plethora of IoT projects. Their size is their strength and, for me, their weakness.

Moving onto a small chip means I have a few issues to solve that the Raspberry solves easily. 1) Power supply 2) File storage 3) My skills.

Adafruit Huzzah and FTDI Cable

Something I already had in my box of wires and gadgets is an Adafruit Huzzah ESP8266 board. I bought it a while ago and needed to combine it with a few other bits to make it work. To program it I needed a USB FTDI cable – which I also have.

But then my friend discovered the Wemos D1 Mini – now re-branded Lolin. The big benefit here is that it solves problem #1 (power supply) and means I don’t need an FTDI cable, just a regular micro USB cable which also supplies power.

Wemos also have a relay “shield” that means I can create a tidy package that builds in the ESP8266 and includes the relay required to turn on the PC.

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