All posts in Gadgets

ESP32 E‑Paper Status Display

ESP32 E‑Paper Status Display

By Jonathan Hassall on

Using an ESP-32 board with an embed­ded E‑Paper dis­play, I cre­at­ed a gad­get that shows sta­tus infor­ma­tion from my web serv­er. E‑Paper, also known as E‑Ink, only needs pow­er when being updat­ed, and uses no pow­er between updates. This means that the gad­get can be pow­ered for weeks from a recharge­able bat­tery. The pur­pose of … Read More

A HTML/JavaScript web interface and a Node/Express server, to control the robot drawing machine over the Internet.

A HTML/JavaScript web interface and a Node/Express server, to control the robot drawing machine over the Internet.

By Jonathan Hassall on

Using Node­JS and Express, I cre­at­ed a web inter­face to remote­ly con­trol the pen draw­ing robot ‘Line-Us.’ Avail­able from Cool Com­po­nents. You can watch a video of it func­tion­ing here: And my pro­jec­t’s source code is avail­able on GitHub:   https://github.com/jonhassall/line-us-web   The robot is avail­able to pur­chase here:   https://www.line-us.com/

Vacation with Autographer

Vacation with Autographer

By Jonathan Hassall on

I was lucky enough to take an Auto­g­ra­ph­er device on vaca­tion to the Unit­ed States this year. This piece of wear­able tech­nol­o­gy is designed to be an ‘auto­mat­ic pho­tog­ra­ph­er,’ doc­u­ment­ing your life with­out inter­rupt­ing it. Auto­g­ra­ph­er is a small wear­able cam­era, that uses five sen­sors to deter­mine opti­mal moments to take pho­tographs. The sen­sors include … Read More