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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
user158205
Hi!
Yes, I think that's fine. Most likely your battery is a bit on the flat side?
Firmwares from the past year or so run a self-test the first time they're flashed to the device. If you take the battery out and re-add it the Puck will start as normal with the correct name on Bluetooth.
The
Fail LD2message refers to the test of LED2 (the green LED). The Puck applies a small resistance and measures the forward voltage across the LED to check it's within range (connected, and not obviously the wrong colour). If the battery voltage is too low the value reported ends up wrong though, so that's probably what you're seeing