RoboClock

RoboClock is a firmware for the Pimoroni Scroll Bot.

Setup

Requires:

• Nix with Flake Support or alternatively a functioning environment for Nerves development.
• a working direnv installation.
• a working 1Password CLI installation.

Once cloned:

• cp .envrc.example .envrc
• Customize the value of SSH_PUBLIC_KEY_OP_PATH to a valid RSA key managed in 1Password.
• Run direnv allow

NOTE: to find the correct path, run op item get <key-name> --format json, and look for the reference attribute of the public key field.

Development

All common tasks are covered in the included Makefile.

Installing/updating the firmware

To flash a MicroSD card, use make firmware.burn. For over-the-air updates to a local device, you can then use make firmware.upload.

Usage

On first boot, the device will broadcast a ROBOCLOCK wifi network - you can connect to it and setup the WiFi connection (used to keep the clock synchronized). Once setup, the connection settings will persist across reboots.

Buttons

• If you keep the top left button pressed for more than 5 seconds, it will reset the network settings (see the Usage section).
• If you press the top right button, the display will cycle 3 different levels of brightness.