Playupdate

Bot that periodically checks Memfault for Playdate firmware updates and notifies a Discord channel when a new one is detected, so reverse engineers and super-enthusiasts can be alerted of updates as soon as they happen. It's inspired by the ylws8 twitter bot.

Setting Up

This bot is built as a Cloudflare worker, and it should be possible to deploy it there under the free tier. It's recommended to use the wrangler command-line tool for easy setup.

Set up config file

Copy wrangler.example.toml to wrangler.toml.

Set up key-value storage

A KV store is used to keep track of the current firmware version, so we need to create one called STATE:

wrangler kv:namespace create --preview "STATE"

Then follow the instructions to add the KV to your wrangler.toml.

Secrets

These secret constants are set with wrangler secret put <name>:

Name	Value
WEBHOOK_URL	Discord Webhook URL for the channel you want to send messages into
PLAYDATE_SERIAL	A Playdate serial number to pass to Memfault
MEMFAULT_PROJECT_KEY	Playdate Memfault project key - can be obtained from firmware, but that's left as an exercise for the reader :)

Tweaking interval

The cron schedule interval can be adjusted in wrangler.toml. By default it checks every 15 minutes.

Publish

Use wrangler publish to publish a live instance of this bot.