
This was a journey, but now I have a HA alarm clock
Getting here was a journey. This is an IOTTime clock from Aliexpress, that needed to be disassembled to get to the solder points I needed to connect a TTL UART adapter to before I could even talk to it. Then building and flashing Tasmota thanks to this person's work. Setting up MQTT, helpers, automations, and dashboard cards in HA.
Now it:
- Is fully controlled including presets from a HA bubble card popup card.
- Has physical button controls for showing current alarm, enabling/disabling current alarm and a spare button I haven't found a use for yet.
- Triggers a gradual room light automation 30 min before.
- Handles DST and time sync itself, unlike my current cheap backup alarm clock that needs to be manually set and will drift and eventually overlap my smartwatch alarm.
- Let's me send custom alarm sound sequences not actually tied to the wake up alarm, which I can tie into other automations. As an example, one courier here drops mail in the mailbox during the night, so I want a toggle I can turn on for expensive deliveries to wake up and grab it when the mailbox sensor triggers rather than leave it sitting out until morning.
In the future the plan is:
- Extract alarm timer from my smartwatch, add 5 minutes, have that be the automatic backup alarm.