The SN1 Solar Node is not your average development board. It provides a IP65 enclosure, lid with a 0.8W solar panel, 18650 battery protection and solar charger, ultra-low power 3.3V switching regulator, an ESP32-C3 with USB-C jack, battery monitoring circuit, power switch (still allows charging when off), and an onboard temperature sensor to get you started. Almost all I/Os are brought out to 0.1″ pin header holes and a small prototyping strip-board (0.1″ spacing) is also provided.
Depending on your needs, the device may be used with either a single or dual 18560 lithium-ion cells. For single-cell only applications, extra prototyping space is available for your custom circuit.
Example ESPHome firmware comes pre-installed and source files are available on our github page.
Specifications
- Controller: ESP32-C3
- System voltage: 3.3 V
- Integrated solar panel: 5 V, 160 mA (0.8 W) in full sun
- Switch off current: 3.2 uA
- Switched on:
- WiFi access point mode current: 85-100 mA
- WiFi connected mode current: 20-50 mA
- Deep sleep current (measured at battery): 40 uA
- Max available supply current (for user-added additional components): 300 mA FIXME
- Operating temperature: -20° to +85° C
- Dimensions:
- Including mounting tabs: 150*85*35 mm
- Not including mounting tabs: 115*85*35 mm
- Enclosure rating: IP65
Resources
Note: 18650 batteries are not included due to shipping regulations.
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