Indoor Helium Hotspot Overview
- Quick Specifications
- Package Contents
- Block Diagram
- Supported Regions
- Antenna Specifications
- Dimensions
- Interfaces
- Firmware
- Unit Information
The Nebra Indoor Helium Hotspot is a compact & elegant solution to provide Helium LongFi coverage and start mining HNT with ease.
Quick Specifications
| Specification | Nebra Indoor Hotspot |
|---|---|
| RRP | £350 ex VAT |
| Case | Plastic (ABS) |
| Ingress Protection | IP40 |
| Dimensions | 150x150x50 mm (Excluding Antenna) |
| Weight | 0.4 Kg |
| Power Requirement | 9-16V DC @ 15W |
| Average Power Consumption | ~8W* |
| Annual Power Consumption | ~70kWh |
| Maximum TX Power | 24-27dBm** |
| Network Connectivity | 10/100 Ethernet, 2.4Ghz 802.11N Wi-Fi |
| Antenna Connection | RP-SMA Female |
| Rated Ambient Temperature | 20-30C |
| Base SOM | Raspberry Pi CM3+ |
| CPU Specification | Broadcom BCM2837B0, Quad-Core Cortex-A53 (ARMv8) 64-bit SoC @ 1.2GHz |
| High Endurance Storage | 32GB |
| RAM | 1GB LPDDR2 SDRAM |
| Internal PCB Dimensions | ~ 139x139x30 mm |
* Average Power Consumption Measured At Mains,
** Maximum TX Power may be capped to a lower amount in some regions.
Package Contents
- The Nebra Helium Indoor Hotspot
- RP-SMA Antenna for LoRa®
- Worldwide 12V 1.5A Power Adapter (with UK, US, EU, and Aus plug heads)
- 1m Cat5e Ethernet cable
- 2 x serial number QR code stickers
- 2 x Nebra stickers
Please note the above image is for illustrative purposes only, the colours of some parts may change.
Block Diagram
Supported Regions
The Nebra Indoor Hotspot comes in three frequency versions:
| Frequency | Supported Regions |
|---|---|
| 433 Mhz | Coming Soon |
| 470 Mhz | CN470 |
| 868 Mhz | EU868, IN865, RU864 |
| 915 Mhz | US915, AU915, AS923-1/2/3/4, KR920 |
The frequency is set upon initialization by the Helium Network.
Antenna Specifications
| Specification | 470Mhz Model | 868 & 915Mhz Models |
|---|---|---|
| Frequency Range | 420-480 | 860-930 Mhz |
| Peak Gain | 3 dBi | 3 dBi |
| VSWR | < 2.3 | < 1.8 |
| Input Impedance | 50 Ohms | 50 Ohms |
| Length | 17.2CM | 20.7CM |
Dimensions
The Nebra Indoor Hotspot is 150x150x50MM In size when nothing is connected.
Approximately 175x150x50MM space is required when accounting for the space required for connectors.
Interfaces
Connectors
- 9-16V @ 15W DC 6.5MMx2.0MM Barrel Jack
- LED Indicator.
- Interface Button
- RP-SMA Connector
- Ethernet Connector
Status Indicator
The Nebra Indoor Hotspot has a status indicator as shown above.
The Top LED will act accordingly:
- Off - Software has not started yet.
- On - Operating as normal
- Slow Blinking - Bluetooth Pairing is enabled
- Fast Blinking - There is potentially a fault. Please check the diagnostics page.
The Bottom LED acts accordingly:
- Off - Unit is receiving no power.
- On - Unit is powered up.
Button
The Nebra Indoor Hotspot has a button on the back of the unit.
This is used to re-enable Bluetooth pairing on the hotspot, hold the button in for approximately 15 seconds then release to start pairing. The top light should start blinking slowly if successful.
Firmware
The Nebra Hotspots run customized software to provide high reliability and ensure your units are as up to date as they can be.
Approximately your hotspot will update once a week in an automatic process, we will announce updates via various social media platforms when they happen.
The software is open-source and available on our Helium Miner Software repo on GitHub.
Unit Information
Each unit has a sticker located on the base of the unit.
This includes the following important information:
- FREQ: Frequency of the Unit
- ETH: Ethernet MAC address
- NSER: Nebra Serial Number
- RPI: Raspberry Pi Serial Number
You will require some of this information when linking your unit to our remote management dashboard.