I've got the interconnect between the ESP WiFi module and the display - documentation helped along the way but some hacking & testing was required.

With all the pins connected, I got started quickly enough with the demo code from WaveShare, but as the ESP8266 as less IO than an mainstream Arduino and some of the pins are required at boot to be in a particular state, some experimentation and alterations to the ePaper library were required to reduce the connections using IO down to Data, Clock and a command signal.

At present it's all about prototyping, so I'm going to stick to these off the shelf modules. It will limit the amount of functionality that can be added short term, but I'd rather get something working quickly than start designing a PCB with features that may never get used.

Next steps will start with a minor detour to see if removing the command signal wire is OK and then I'll remove the bulky connectors, hard solder a first version mounted on some flexible plastic, make a sleeve out of a light weight cloth & velcro, and start wearing it.

In parallel, I've got some initial ideas on demo modules to code - reminders, temp & weather. Reminders is two way - getting them from a data source and then confirming they've been done, temp is sending out info & weather is grabbing info. I suspect there will be a mashup of IFTTT, dweet.io, Arduino.io and misc api calls in my near future.