xiaomi-LYWSD03MMC-to-solar-meter
Turn a Xiaomi LYWSD03MMC humidity monitor into a live solar meter for Home Assistant – PV output in kW and self-consumption %
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GITHUB · launched Sep 29, 2026 · 23 upvotes (top 35%) · 0 views
Niche: embedded systems and firmware utilities · 239 launches, 4 in the last 7 days ▼ -76% · Explore this niche →
Category and tags
- Energy & climate
- Analytics & BI
- Prosumer
- Not AI
- Hobby / open-source project
- bluetooth
- hacs
- home-assistant
- lywsd03mmc
- photovoltaic
- pvvx
- +2 more
Visit website ↗ Source listing ↗
More like this: all 239 launches in embedded systems and firmware utilities →
Could you build this?
Partial Writing Home Assistant scripts and BLE transmission logic is vibe-codeable, but writing and flashing custom low-power C firmware onto the Telink BLE microcontroller requires embedded hardware skills.
What it would actually take: Requires custom C embedded firmware targeting the Telink TLSR8251 SoC (often forking ATC or pvvx open-source firmware) to remap the segmented LCD controller to show live power figures, combined with an ESPHome/Home Assistant BLE transmitter. The hardest part is reverse-engineering the LCD segment driver matrix, managing microamp-level sleep cycles, and debugging hardware-level BLE advertising packets. Requires embedded systems and microcontroller development experience.
Competitors
Other products that read as similar to this one : 100 launches clear the similarity bar, closest 8 shown.
Attention rank: #33 of 101 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 315 days after the earliest competitor.
- PC4713 · ph · 2026-09-12 · 1 upvotes · similarity 0.45
- solar-estimator · github · 2026-11-06 · 149 upvotes · similarity 0.44
- wattsplit · github · 2026-11-05 · 25 upvotes · similarity 0.44
- Multimeter · ph · 2026-10-29 · 1 upvotes · similarity 0.40
- qinghe-solar-service-platform · github · 2026-09-10 · 7 upvotes · similarity 0.40
- xiaomi.controller.86v1 · github · 2026-10-04 · 39 upvotes · similarity 0.40
- LM-35 AF · ph · 2026-10-14 · 2 upvotes · similarity 0.39
- Heliowatch V1 · ph · 2026-10-21 · 1 upvotes · similarity 0.39
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.