Battery operated weather receiver

I was finally able to combine an e-paper display with a low power RF receiver to create a receiver that operates for 10 years on 2 AA cells. 

Side illuminated acrylic logo

 

Halloween Decoration

 This decoration has LEDs behind the eyes and mouth. The eyes pulsate red while the mouth sparkles in various colors.

The pumpkin face is based on a design by Kronos Robotics.

Temperature/humidity meter

 

This is a temperature and humidity meter based on an e-paper display like those used in Kindle e-readers. The project was a chance to learn about e-paper and play with a new microcontroller, namely the Microchip ATtiny1614, plus to try milling a PCB to accommodate an FFC connector with 0.5mm pad pitch.

It runs on a CR2032 3V coin cell which should last about 4 years. The average current draw is 5.9 uA.

The sensor is a Bosch BME280.

First milled PCB for surface mount components

 

It's a little board to drive an e-paper display from an ATtiny1614 micro. Displays temperature and humidity and runs for years on a coin cell.

IR Remote Control via Network

This is a little web server running on an ESP32 micro. It allows you to control devices by IR remote control from a simple web page. It connects to a WiFi network at one end and sends IR codes through an IR blaster at the other end.

The finished product. Enclosure designed in Fusion360 and printed on a Prusa 3D printer.

IR receiver at the top ()to learn IR codes), ESP32 in the center, IR blaster connection at the bottom right.

The milled PCB. I used bCNC to do auto-leveling of the board.

Milling the board on the Shapeoko

 

The web page.