Using an ESP32-C3 connected to HomeAssistant via ESPHome, control 12v yard path lights including configuring automations to turn lights on/off at sunset/sunrise and dimming.

This short guide will show you how to use HomeAssistant, and the ESPHome app for it, to control LED dimming. In this case I'm using this for low voltage yard path lights, but could be used for anything.

If you have HomeKit integrated with HomeAssistant than you can also control/dim your LEDs from your iPhone!

A Svelte action that whena applied to a textaarea supports automatically growing or shrinking as content is added or removed.

src/lib/actions/autogrow.ts:

export function autogrow(node: HTMLElement) {

Whew, what a mouthful.

Cloudflare Workers is an excellent platform for deploying a variety of applications but it has some limitations compared to Cloudflare's other product, Pages.

Pages gives you git integration which gives you auto-deploying via git push as well as pull request preview deployment links so you can test out features before pushing to production.

However, it's not super clear how to deploy a bare worker to Cloudflare Pages as Pages is more tailored right now for apps (SvelteKit, Astro, Next, etc), that is why I wrote up this little guide.

Want to release a new binary on Github for every new git tag (e.g. v1.2.7)? Here is a simple Github Actions yaml config file that should get you started.

This script will automatically checkout your code, setup the correct version of go as defined in your go.mod file and build your go binary (in this case using a Makefile default target), then upload it to a new Github Release.

# .github/workflows/release.yml
name: Build and release Go Project

Start by installing chromium and unclutter which will hide the cursor on the screen:

sudo apt install -y -no-install-recommends chromium-browser unclutter

If you want to run your own app on a Debian system, like a RaspberryPi, you'll need to build the binary for the given device then setup systemd to run the binary.

Given you have an app called myapp, first create a service file to run your app, say at myapp.service on your local system:

[Unit]
Description=Some description here...
After=network.target

For a project I'm working on, I need to ship a single server binary with all static files embedded and use that for the frontend of the server. The backend has a variety of routes which the frontend calls.

The frontend is a SvelteKit static app built to ./frontend/build. Here is the Echo configuration to get these files serving at the root of the web server:

On Android devices, if you want to create a file input that prompts the user to either choose an image from their photo album or take a picture with their camera, you'll need this basically undocumented capture attribute added to your input's accept property:

<input type="file" accept="image/*;capture=camera" />

Given a binary at cmd/server/main.go, create a binary at bin/server that is built for a Raspberry Pi:

env GOOS=linux GOARCH=arm GOARM=5 go build -o ./bin/server ./cmd/server/main.go

templ is a great view framework but there is no clear documentation (as of writing) showing how to use it with the Echo web framework. This short guide should show you how to set it up:

Install templ and echo:

go get github.com/a-h/templ