VEML7700
Also known as: VEML7700 · Vishay VEML7700 · Light & UV
What the quality multisensors (Apollo et al.) actually use: honest readings from moonlight to full sun, with the ESPHome component handling gain switching for you.
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At a glance
⚑ flag an error| Measures | lux |
|---|---|
| Accuracy | 0–120k lx with good low-light linearity and auto-gain |
| Interface | I2C @ 0x10 |
| Supply | 3.3 V |
| Battery-viable | Yes (deep-sleep friendly) |
| ESPHome | Native ESPHome component — veml7700 |
| Typical price | $2-3 (street, varies) |
Compare all sensor modules in one table →
Which one do I buy?
vs BH1750: better at the dark end and self-ranging; the BH1750 is fine if a rough number is enough.
Clone check
Low clone risk. Buy from any reputable listing.
Good for
Gotchas to know
- Single fixed address (0x10) — one per bus.
- Same placement truth as every light sensor: the case design matters more than the chip.
Wiring it up
It's I2C, so it shares two pins with every other I2C sensor you own — chain your climate/light/CO2 stack on one bus and mind the address clashes (this one lives at 0x10). Any ESP32 dev board works.