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main_page [19/07/2015 18:12]
Andrew Bettison Add [Serval Chat] section
main_page [02/04/2018 20:37]
Paul Gardner-Stephen [Serval Mesh Extender (Formerly Mesh Helper)]
Line 39: Line 39:
 **[[content:servalmaps:main_page|Serval Maps]]** is an Android app that uses [[content:servalmesh:|Serval Mesh]] to provide collaborative, infrastructure-independent, geographical mapping. **[[content:servalmaps:main_page|Serval Maps]]** is an Android app that uses [[content:servalmesh:|Serval Mesh]] to provide collaborative, infrastructure-independent, geographical mapping.
  
-===== Serval Mesh Extender (Formerly Mesh Helper) =====+===== Serval Mesh Extender ===== 
 + 
 +The **[[content:meshextender:main_page|Serval Mesh Extender]]** is a hardware device that helps other devices to join and participate in a [[:content:servalmesh:|Serval Mesh]] network. 
 + 
 +==== Second-Generation Serval Mesh Extender ==== 
 + 
 +The [[content:meshextender:2ng|Second-Generation Mesh Extenders]] are the current generation of Mesh Extender hardware, and continue to be under active development. 
 + 
 +{{:content:meshextender:front_3-4.jpg?200|}} 
 + 
 +  * powered by external USB, 12v/24v automotive and/or solar (with MTTP tracking charge controller) 
 +  * Integrated LiFEPO4/LiIon/Sealed-Lead-Acid battery charger 
 +  * Custom-designed injection-moulded housing 
 +  * Designed to meet IP66 environmental resistance 
 +  * Integrated "Mesh of Things"/"Internet of Things" I/O port 
 +  * microSD card for bulk storage (reduced power consumption versus USB) 
 +  * Wi-Fi access point (for devices to connect) and ad-hoc Wi-Fi (between Mesh Extenders) 
 +  * RFD900/RFD868 UHF packet radio (up to 4km range line-of-sight, ~200m indoors) 
 +  * Interface to [[:content:meshextender:externalradios|Codan/Barrett HF Radios]] for very-long-range communications links (support for other radios is also possible) 
 +  * provides a standard Wi-Fi Access Point for nearby devices (such as smart phones) that do not support Ad Hoc Wi-Fi mode 
 +  * offers the [[:content:tech:Serval Mesh]] app for Android for download via HTTP so that people can join the [[content:tech:mesh network]] without having previously installed the app 
 +  * acts as a [[:content:tech:Rhizome]] node, storing and forwarding files and [[:content:tech:MeshMS]] messages 
 +  * Fully interoperable with first generation Mesh Extenders 
 + 
 +==== First-Generation Mesh Extenders (deprecated) ==== 
 + 
 +The earlier phase of development was based around TP-Link MR3020 wireless routers, and is now fully deprecated.  For people wanting to build a Mesh Extender compatible device, they should refer to the second-generation Mesh Extender documentation above, as it is possible to build a compatible device using a GL-INET AR150 wireless router, which is superior in all ways to the TP-LINK MR3020, not the least being that the GL-INET devices have an open boot-loader, a proper header for the onboard UART, four times the flash, and twice the RAM. 
 + 
 +{{:content:meshextender:meshextender-2014-02-11.jpg?180 |Pair of Serval Mesh Extenders on bench}} 
  
-{{:content:meshextender:meshextender-2014-02-11.jpg?180 |Pair of Serval Mesh Extenders on bench}} The **[[content:meshextender:main_page|Serval Mesh Extender]]** is a hardware device that helps other devices to join and participate in a [[:content:servalmesh:|Serval Mesh]] network. 
   * powered by any external USB power source (5V 500mA)   * powered by any external USB power source (5V 500mA)
-  * Mesh Extenders mesh together over short distances using Ad Hoc Wi-Fi, over longer distances using packet radio on the [[http://en.wikipedia.org/wiki/ISM_band|ISM 915 MHz band]]+  * Mesh Extenders mesh together over short distances using Ad Hoc Wi-Fi, and over longer distances using packet radio on the [[http://en.wikipedia.org/wiki/ISM_band|ISM 915 MHz band]].  Our ad-hoc packet radio system uses the RFD900 long-range UHF radio with custom CSMA firmware.
   * provides a standard Wi-Fi Access Point for nearby devices (such as smart phones) that do not support Ad Hoc Wi-Fi mode   * provides a standard Wi-Fi Access Point for nearby devices (such as smart phones) that do not support Ad Hoc Wi-Fi mode
   * offers the [[:content:tech:Serval Mesh]] app for Android for download via HTTP so that people can join the [[content:tech:mesh network]] without having previously installed the app   * offers the [[:content:tech:Serval Mesh]] app for Android for download via HTTP so that people can join the [[content:tech:mesh network]] without having previously installed the app
   * acts as a [[:content:tech:Rhizome]] node, storing and forwarding files and [[:content:tech:MeshMS]] messages   * acts as a [[:content:tech:Rhizome]] node, storing and forwarding files and [[:content:tech:MeshMS]] messages
   * provides a platform for future Serval Project initiatives, such as the commoditisation of many classes of medical monitoring devices.   * provides a platform for future Serval Project initiatives, such as the commoditisation of many classes of medical monitoring devices.
 +
 +===== Satellite based services =====
 +==== Outernet DreamCatcher ====
 +
 +The following link explains our method to get a DreamCatcher working : [[Dreamcatcher|Dreamcatcher]]
  
 ===== Trial Deployments & Exercises ===== ===== Trial Deployments & Exercises =====
main_page.txt · Last modified: 02/04/2018 20:37 by Paul Gardner-Stephen