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Open hardware open source wireless temperature probes

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BBQueue

BBQueue is an open hardware, open source wireless temperature probe device for cooking.

Features:

  • Low-power radio (RFM69): This can operate for weeks on battery power and has much better range than WIFI.
  • Web-based dashboards: temperature trends are viewable in any web browser.
  • High accuracy: Uses commercial temperature probes (e.g. thermoworks) and an ADS1115 analog-to-digial converter.
  • Two temperature channels are available to monitor both food and bbq temperature.
  • Battery level monitoring.

Photos

outside shot

Screenshot

screenshot

Hardware

bbqueue board

bbqueue with cables

Hardware schematics are available here.

Known issues

  • The analog to digital converter tends to pick up noise when the power supply is plugged in. Better to run on batteries until I can figure this out and create a new hardware revision.