37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
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# ESP32 Clock
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This is a YAML config file + driver for a clock based on several LED segment displays driven
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by SN74HC595 shift registers.
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## Hardware
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Connect the shift registers like this, or adapt the pin config as needed:
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- Data input (DIO) to ESP GPIO19
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- Shift clock input (SCK) to ESP GPIO18
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- Latch / register clock input (RCK) to ESP GPIO5
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Keep in mind that the ESP32 is a 3.3V device when connecting to a 5V display.
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## Setup
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Set the board type in the YAML (default should also work on most ESP32 devices)
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Adapt the config as needed for the fallback AP and if wanted, api key.
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Create a `secrets.yaml` containing this:
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```yaml
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wifi_ssid: "ssidhere"
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wifi_password: "keyhere"
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```
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Build and upload the config with esphome CLI, or the dashboard.
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See [the ESPHome CLI Getting Started Guide](https://esphome.io/guides/getting_started_command_line.html)
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how to do that.
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## License
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The driver in `components/` is directly based on the existing MAX7219 driver in ESPHome and as such
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subject to the GPLv3 and MIT licenses, as outlined in the LICENSE document (also copied from ESPHome).
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## Open Issues
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The actual segment mapping is currently untested, due to missing hardware. It currently is still
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the same as in the MAX7219 driver.
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