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WindNerd One(-S) installation

Power Source​

The USB connector is convenient for testing, but not recommended for permanent installation.
For long-term reliability, connect a power source directly to the wire terminal block (One) or XH2.54 wire-to-board connector (One-S).

Device Powered

warning

The correct polarity must be observed, but accidental reversal is safe as long as the maximum voltage is not exceeded.

WindNerd One​

The WindNerd One is suitable when an external power source is available.

The device typically consumes in average:

Supply VoltageTypical CurrentWith Wi-Fi Max Power Saving
5 V~23 mA~18 mA
12 V~10 mA~8 mA

From DC adapter​

  • Most USB power adapters are compatible. The USB plug can be removed and the positive/negative wires connected directly to the terminal block.
  • At 5 V (USB voltage), long cable runs are not recommended, as voltage drop may prevent proper operation.
  • Many power supplies from other electronic devices can also be repurposed, provided they fall within the 5–16 V range and can deliver at least 150 mA peak current.
  • If the cable needs to be extended over several meters, using a 9–12 V supply is preferable.

From batteries​

The WindNerd One can be powered from

  • 12 V lead-acid battery (commonly used in UPS, vehicles, or solar setups).
  • 2-cell or 3-cell lithium batteries (Li-ion / LiFePO4).

WindNerd One-S​

The WindNerd One-S is preferable when the device must operate independently using a dedicated battery and solar source.

Once connected to Wi-Fi, the device typically consumes in average:

Supply VoltageTypical CurrentWith Wi-Fi Max Power Saving
4 V~15 mA~10 mA
info

The WindNerd One-S can further reduce power consumption to as low as 1.5 mA during periods of low sunlight.
In Eco mode, Wi-Fi is not permanently connected; it reconnects every 1, 2, or 5 minutes to publish data to remote services.
The local configuration webpage and local HTTP API are not accessible in this mode.

From Sunbank​

  • The Sunbank is a solar power kit especially made for the WindNerd One-S.

From batteries​

  • 1-cell lithium battery (Li-ion / LiFePO4).

To complement with solar charging, use a solar panel between 1 W and 3 W, depending on your location and sun exposure.

From DC adapter​

  • Most USB power adapters are compatible.
  • Avoid extending the cable length when operating at 5 V to prevent voltage drop issues.