Naming things is hard. As a software engineer, I know this all to well. The times I've puzzled, despared, cursed at whoever named some variable, only to have git blame tell me that this particular variable was added by a certain remmelt… Either way. In this post I will document the steps I took to flash the qmk-dfu bootloader onto a Pro Micro Arduino clone. Terms First off, here are some terms I'll be using.

You’ve got your hands on a Rasberry Pi Zero W! Lucky you. This is a great device for IoT, monitoring, you name it. I’m building a connected wake up light. I will explain how to set up the Raspberry Pi Zero W in headless mode, so without using a screen or keyboard. This will likely also work for any other wifi-equipped Raspberry. You will only need to power the board. Let me know what worked for you!

I wanted to see how hard it would be to get Dropwizard config from Consul’s key value store. Turns out it is very easy to do! Make sure you’re using Dropwizard >= 0.8.0, this has the SubstitutingSourceProvider that we’re going to use. Create a default Dropwizard project with the following configuration line in its config.yml: someSetting: ${settings/someSetting} Don’t forget to add it to the xxxConfiguration: @JsonProperty @NotEmpty private String someSetting; Now in the xxxApplication class, register a new ConsulKVSubstitutor in the initialize method: