BTClock / BTClock is on Nostr

Tick Tock I’m a open source clock

Last Notes

2026-05-26 12:06:20 GMT

New #BTClock website! https://btclock.dev
Also released new v4.0.0 firmware which includes new fonts, 160+ currencies, proxy support and can show payment notifications of your Lightning Wallet using NWC! Use the v4 flasher at https://web-flasher-v4.btclock.dev/

2026-04-28 15:20:36 GMT

If you feel adventourous, there is a beta version of the upcoming #BTClock v4 firmware: https://web-flasher-v4.btclock.dev/
Based on the new ESP-IDF v6 framework, without Arduino libraries (and no more PlatformIO).
It should be more stable because of lower memory consumption (no freezes).
Also it has additional fonts because the bitmap fonts are replaced by TTF fonts and integration with more mining pools (ViaBTC, nerdminer pools and Foundry USA).
With comprehensive documentation at https://docs.btclock.dev/

2026-04-19 11:39:28 GMT

#BTClock firmware 3.4.0 is out, a reliability-focused release!
New features: Pool-wide hashrate for the #Noderunners pool, and a Moscow-time toggle for the USD sats-per-dollar screen.
Under the hood: every TLS handshake is now serialised behind a firmware-wide gate, the WebSockets RX path stays in DRAM, HTTP responses stream, and the WebUI ships as a single JS chunk for faster ESP32 load.
Plus a pile of fixes — mempool WS survives 18 KB history bursts, no more ghost Nostr relays, Bitaxe JSON is happy with numeric fields, LEDs stop false-flashing when WiFi is down.
Use the auto-updater in the WebUI, use the web-flasher at https://web-flasher.btclock.dev/ or compile it from source yourself https://git.btclock.dev/btclock/btclock_v3
If you use Home Assistant, you can also integrate it with the custom #BTClock integration: https://github.com/dsbaars/homeassistant-btclock

2025-11-26 03:05:38 GMT

#BTClock version 3.3.14 has just been released, which fixes the weird artifact under the letter A when you get a Zap Notification and also fixes a block height synchronization issue.
You can update via the WebUI or using https://web-flasher.btclock.dev (or compile the firmware yourself of course!)

2025-11-16 21:06:56 GMT

It’s beer-o-BTClock in El Zonte! If you are here as well, I still have some kits for sale. Find me at Olas Permanentes for now if you’re interested.
https://blossom.primal.net/c86b5a63b7cdb7a75fdfbadd0c6425ad49e459404e6455653549c10988b719b4.jpg

2025-11-13 19:21:55 GMT

It’s Beer’o’BTClock in #SanSalvador
https://blossom.primal.net/1cce08ffa8d25615b0a35fa5000970dde10071278e73328dd4b20f1c672fbd36.jpg

2025-11-13 16:46:41 GMT

Hello, this account will post updates about the #BTClock!
Check out www.btclock.store and git.btclock.dev