The Nebra Outdoor Helium Hotspot is an ideal solution for providing great Helium LongFi coverage and is suitable for use outside in most environments.
- Package Contents
- Block Diagram
- Supported Regions
- Antenna Specifications
- Hardware Overview
- Mainboard Layout
- Daughterboard Overview
- On the inside
- Status Indicator
- Certification List
- Certification Codes
- FCC Statement
|Specification||Nebra Outdoor Hotspot|
|RRP||£450 ex VAT|
|Dimensions||300x200x100 mm (Excluding Antenna)|
|Rated Ambient Temperature||-25-80oC|
|Power Requirement||802.3AF 48V POE OR 9-16V DC @ 15W|
|Average Power Consumption||~12-15W*|
|Annual Power Consumption||~105-130kWh|
|Maximum TX Power||24-27dBm**|
|Network Connectivity||10/100 Ethernet, 2.4Ghz 802.11N Wi-Fi, Optional 4G Module available separately.|
|Antenna Connection||N-Type Female|
|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|
|Outer dimensions (w/o connectors)||235mm x 155mm x 75mm|
* Average Power Consumption Measured At Mains, higher average consumption when the optional 4G Module is used.
** Maximum TX Power may be capped to a lower amount in some regions.
- 3 dBi N-Type Glass Fiber Antenna
- Sealing String
- L Shaped Mounting Brackets 2 x L
- Z clamp Brackets x 2 (for pole mounting)
- Spare Blanking Plugs N-type
- Nut & Washer for U bracket
- U Brackets for pole mounting
- Spare Cable glands M10, M20, M22
- Wi-Fi antenna N-type
- Serial Number QR Code Stickers x 2
- Nebra Stickers x 2
The Nebra Outdoor Hotspot comes in three hardware versions:
|433 Mhz||Coming Soon|
|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.
|Specification||470Mhz Model||868 & 915Mhz Models|
|Frequency Range||420-480||860-930 Mhz|
|Peak Gain||3 dBi||3 dBi|
|Input Impedance||50 Ohms||50 Ohms|
- DC Barrel Jack - 2MM Pin, 6.5MM Barrel centre positive. Recommended PSU 12V @1.5A.
- LAN Connector - RJ45 Connector wired to the Ethernet & POE Modules.
- Power Jumper - 3 Pin jumper to select power source, place in position 1-2 for POE, or 2-3 for DC Jack.
- POE Module - Negotiates 802.11AF compliant connection and outputs 12V DC into the power section.
- Power Section - Takes the 12V power source and regulates it down to 5V & 3V3 rails.
- Ethernet Controller - 10/100 Ethernet to USB 2.0 Adaptor, Maxlinear XR22800IL32-F. Connected to USB Hub.
- USB Hub - 4 Port USB Hub, wired to Ethernet controller, USB port & M-PCIE connector.
- USB Port - USB 2.0 Type A Connector, recommended max power 250mA.
- "Raspberry Pi" Header - 40 Pin RPi style header, please note only the first 24 pins are wired. (Refer to 1.1.X)
- M-PCIE connector - M-PCIE Connector wired up to USB for connectivity, has Micro SIM Card connected to it.
- Micro Sim Card Slot - For use with 3G/4G Module in M-PCIE slot
- Mini PCI Express connector for concentrator module - Designed for use with select M-PCIE LoRa® Concentrators, these only have wired up SPI, plus GPS PPS from the GPS Module.
- GPS Module - NEO-6M GPS module, connected to UART1 on the compute module. Plus PPS signal to concentrator modules for accurate timings. PLEASE NOTE: this is not used by the Nebra Helium Hotspots and is only present on the first batch.
- Daughterboard Connector - Connects to Compute Module Daughterboard.
The mainboard has 3 Status LEDs which do the following:
- 12V LED - Indicates the mainboard has power located near the jumper.
- 5V LED - Indicates the 5V regulator is operational located in the power section.
- 3V3 LED - Indicates the 3V3 regulator is operational located in the power section.
The standard daughterboard supports both the Compute Module 3 and Compute Module 3+ (including Lite) variants.
While also compatible with the CM1 we recommend using the CM3 / CM3+ / CM3 Lite / CM3+ Lite for the extra power and RAM as well as larger onboard storage options.
- Daughterboard Connector - Connects to the Mainboard.
- SO-DIMM connector - Raspberry Pi Compute Module connects here.
- Power Regulator - Power Circuitry required for the compute module.
- SD Card Slot - SD Card Slot for if a CM3/CM3+ Lite is used.
- Micro USB Connector - Used to re-flash the EMMC on the Compute Module.
- USB Switch - IC responsible to allow switching between Micro USB and Mainboard.
- USB Jumper - Used to switch between normal operation and flash mode, ensure it is in position 1-2 for normal operation and 2-3 for programming.
- Power Jumper - Allows the module to be powered from the Micro USB connector. Only connect when programming from PC and ensure mainboard is not connected.
The board has 2 Status LEDs which do the following:
- Power LED - Indicates the board has power. (Blue)
- ACT LED - Indicates Read / Write operations on the storage. (Green)
The Nebra Outdoor Hotspot is approximately 300x200x100 mm In size when nothing is connected.
You can find the datasheet here
From the outside
- CAT 5e Gland / Passthrough Gland
- N-Type Female Antenna Connector
On the inside
- 9-16V @ 15W DC 6.5MMx2.0MM Barrel Jack
- Ethernet Connector
- LED Indicator
- Interface Button
- 4G / LTE Module Connector
- Sim Card Slot
The Nebra Outdoor Hotspot has a status indicator called LED1 on the Wifi daughterboard in the middle of the hotspot
This indicator is RED and 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 diagnostics page.
The Nebra Outdoor Hotspot has a button on the Wifi daughterboard in the middle of inside teh hotspot. This is labeled S1
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 adjacent status light LED1 should start blinking slowly if successful.
The Nebra Hotspots run a customised 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 at https://github.com/nebraltd/helium-miner-software
We are working on getting the Nebra Outdoor Hotspot certified in multiple regions.
|Approval||Countries Covered||Hardware Frequency||Status||Frequency Plans|
|CE||European Economic Area||868 Mhz||Completed||EU 868|
|UKCA||United Kingdom||868 Mhz||In Progress||EU 868|
|FCC||United States of America||915 Mhz||Completed||US 915|
|ISED||Canada||915 Mhz||In Progress||US 915|
|RCM||Australia & New Zealand||915 Mhz||In Progress||AU 915|
|MIC||Japan||915 Mhz||In Progress||AS920 (AS1)|
|SRRC||China||470 Mhz||In Progress||CN 470|
|EAC||Russia||868 Mhz||In Progress||RU 864|
|WPC||India||868 Mhz||In Progress||IN 865|
All certification related documents can be viewed in the certification folder for our outdoor Raspberry Pi miner.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
You can find 2D and 3D drawings of the outdoor IP67 case here
- Outdoor IP67 Case Diagram
- Outdoor IP67 Case Drawing
- Outdoor IP67 3D Model Top
- Outdoor IP67 3D Model Bottom
Click here to download all the files.