Demo catalogue / build

Solar weather station

An off-grid station measuring temperature, humidity, pressure, light, wind and rain - solar charged, in a weatherproof enclosure.

Agent-readable: markdown · machine feed: feed.json

Roles and candidates

Role	Qty	Candidates
Controller	1	ESP32-S3 Feather (8MB Flash / 2MB PSRAM)$17.50
Temp / humidity / pressure	1	BME280 temperature / humidity / pressure breakout$14.95BME280 breakout (Pimoroni)£13.80
Ambient lightoptional	1	VEML7700 ambient light sensor breakout$4.95
Wind and rain instruments	1	Weather meter kit (anemometer, vane, rain gauge)$79.95
Solar panel	1	Solar panel 6V 2W$34.00
Solar charge controller	1	Universal USB / DC / solar LiPo charger bq24074$14.95
Battery	1	Lithium-ion polymer battery 3.7V 2500mAh$14.95
Weatherproof enclosure	1	Watertight polycarbonate enclosure 1554 series
Status display (optional)optional	1	Monochrome 0.96in 128x64 OLED display (SSD1306)$17.50
I2C cabling	1	Qwiic / STEMMA QT cable kit$12.95

Constraints an agent must satisfy

• solar-chainPanel (6 V corroborated) feeds the bq24074 charger, which charges the 1S LiPo; the Feather runs from and charges the same battery. One coherent power chain.
• environmentThe BME280's corroborated operating range (-40 to +85 C, 300-1100 hPa) covers outdoor deployment; the 1554 enclosure is polycarbonate and IP68 (corroborated).
• interfaceAll sensors are I2C (BME280, VEML7700, display); the Feather's STEMMA QT port chains them with the Qwiic cable kit.
• instrument-ioThe weather meter kit is passive - pulse counting for wind/rain (2.4 km/h per Hz, 0.2794 mm per tip, both corroborated) and an analog vane. The Feather has the GPIO and ADC for all three.