Controlling 196 LEDs using 3 pins on an arduino including PWM to create hundreds of colours (well 729).
How I built a 8 key keyboard with an arduino, some conductive paint and a lot of patience.
Building a solution to protect content in Cloudfront behind OpenID Connect (OIDC) compatible single-sign-on using Keycloak and Lambda@Edge. This had a few more problems to overcome than I thought!
My experience building a serverless WebDAV server to make a quick solution for sharing files
Using HAProxy for automatic service discovery of web services running on ECS clusters using AWS CloudMap Service Registry
Building a CI/CD pipeline to build, test and deploy Cloudflare workers.