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Custom Home Assistant Card for Your DIY TDS & Flow Meter

In the previous article, DIY a Smart Reverse Osmosis TDS & Flow Meter with ESPHome and ESP32‑C6, the hardware side of a smart RO monitor…
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Sensor Legend card for Home Assistant

If you like having compact sensor tiles that still explain what the numbers mean, this card is for you. The Sensor Legend card shows a numeric value (e.g. CO₂, PM2.5,…

