VERBIS Word Clock Case

This is a completely new case design for the VERBIS Word Clock.

I started completely from scratch, using only the original Letter Layout SVG in English, I changed the font to Atkinson Hyperlegible which is specifically designed for easy reading.

The case is designed to be compact, with minimal depth ideal for hanging on the wall.

I used a D1 Mini ESP8266 which reduced a lot of the complexity in the original project as it can be programmed and powered by the onboard micro-USB.

I used this NeoPixel-compatible matrix WS2812B.

Printing

I'm assuming you know how to change filament mid-print, but you only need to do it once.

1. Slice the “letters” file with letters up at 0.2mm layer height with a filament change between layer 2 and 3 - this doesn't have to be a perfectly clear first two layers, diffusion is preferred. I used “natural” PLA, white would probably work too, followed by black.
2. Print the case face down with supports on the USB hole, I printed at 0.2mm for aesthetics, the front edges are rounded, and solid.
3. Print the shim, 0.3mm is fine for this and low infill. This will hold the LED matrix square in the middle.
4. Print the back, I did this at 0.3mm in “natural” but the colour isn't important!

Electronics

1. Grab the source code from the VERBIS git repo and install it to the ESP, the VERBIS Instructables has step by step instructions
2. Connect three wires from 5v, G, and D4 on the ESP board to V+, V-, and IN on the LED Matrix. I've used 90 degree headers and straight solder - both work.
3. Pop a bit of electrical tape over the output connections to prevent shorting later
4. Power it up and do the WiFi setup and enjoy flashing pixels!

Assembly

• Decide where you want the USB to come out, I've put it on the bottom right but you might want it to drop straight down or come out the left, or even the top!
• Insert the letters in the desired orientation, they should be a friction fit
• Slot in the shim - it's not perfectly square inside as the LED Matrix I have is 1mm narrower than tall! Check which way your LEDs need it.

• Place the LED matrix in the middle, for me the “top” is where the solder points marked “IN” are
• You may want to glue the shim and matrix in place
• Position the ESP board in the corner with the ESP itself facing the LED Matrix and the USB at the hole - you probably want to glue this in place

• Check your USB cable fits and powers everything!
• Place the back cover on, check the hanging hole is at the top - it's a lose friction fit so may want glue, especially if you plan to hand it!