diff --git a/README.md b/README.md
index e9dc15b..ddeb048 100644
--- a/README.md
+++ b/README.md
@@ -284,6 +284,8 @@ A collection of awesome browser-side [JavaScript](https://developer.mozilla.org/
 * [How JavaScript works](https://blog.sessionstack.com/tagged/tutorial) - A series of articles about the building blocks of JavaScript.
 * [Multi-threading using web-workers](https://www.loginradius.com/blog/async/adding-multi-threading-to-javascript-using-web-workers/) - Web Workers: Adding Multi-threading to JavaScript
 * [this keyword in JavaScript](https://www.loginradius.com/blog/async/breaking-down-this-keyword-in-javascript/) - Breaking down the 'this' keyword in JavaScript
+* [How JavaScript and Hardware Work Together](https://freecontent.manning.com/how-javascript-and-hardware-work-together/) - An article about using JavaScript for amazing and fun hardware projects.
+* [Building a Lock and Key System with JavaScript](https://freecontent.manning.com/building-a-lock-and-key-system/) - An article about building a lock and key system.
 
 ## Data Visualization
 *Data visualization tools for the web.*