https://github.com/bga/stm8-low-temp-led-reporter

https://github.com/bga/stm8-low-temp-led-reporter

Last synced: 12 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/bga/stm8-low-temp-led-reporter
• Owner: bga
• License: apache-2.0
• Created: 2021-03-31T12:56:56.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2021-05-18T07:55:50.000Z (about 5 years ago)
• Last Synced: 2025-05-23T04:17:32.949Z (about 1 year ago)
• Language: C++
• Size: 597 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
Little beacon compares target temperature vs ambient (both NTC thermistors). Result is feed to Schmitt trigger(hysteresis). User get 1 long blink or 1 short depends from result. Can be used to report when some object is colder or hotter than ambient. This project also attempt to reduce stm8s103f3/stm8s003f3 power as low as possible. Result is around 10 - 30mkA (2 years from single CR2032).

Extra features.

- report low battery voltage - 2 short blinks

- report sensor failure - 4 short blinks

Requires IAR STM8 for build

![Front view](https://github.com/bga/stm8-low-temp-led-reporter/raw/master/media/sch.png "Schematic")