Sensor Keeper
LiveEvery 4DSKY sensor pays a tiny testnet fee for each heartbeat. When its balance runs dry, the sensor shows as offline and stops earning. Sensor Keeper fixes that quietly in the background.
- Platform
- Mac · Windows · Linux · Raspberry Pi
- Built with
- Node.js
- Hedera mirror node
- Hedera Faucet API
- Discord / push alerts
What it does every 30 minutes
Check
Reads each sensor's balance and heartbeats from Hedera's public mirror node.
Top up
If the balance is low, requests free testnet HBAR from Hedera's official faucet.
Verify
Confirms the sensor is still listed for buyers and, for an Air!Squitter, that it's healthy on the local network.
Alert
Sends a Discord or phone alert only when something needs a person.
What it does
- Checks each sensor's balance and heartbeats every 30 minutes using public, read-only Hedera data.
- Tops the sensor up through Hedera's official faucet when it runs low.
- Checks that each sensor is listed as available to buyers in Neuron's on-chain registry.
- Checks a Jetvision Air!Squitter's status on the local network and can install its software updates.
- Alerts by Discord or phone push only when something needs attention, plus an optional weekly all-clear.
Easy to run
- Double-click installers for Mac and Windows, or a one-line terminal install.
- Setup happens in a small app in your own browser; nothing leaves your computer except calls to Hedera.
- No AI, no accounts and no cost. MIT licensed.
Unofficial community tool. Not affiliated with 4DSKY, Neuron, Jetvision or Hedera.