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lab:argus [2014/02/10 09:19] – [Modifications] chrono | lab:argus [2017/01/05 11:21] (current) – [Temperature & Relative Humidity] chrono | ||
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- | Each node can be configured for individual needs and available budget. A basic node will only provide connectivity features, a fully equipped node will offer complete communication and RF-/ | + | Each node can be configured for individual needs and available budget. A basic node will only provide connectivity features, a fully equipped node will offer complete communication and RF-/ |
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* Data Delivery and Tracker Platform for [[lab: | * Data Delivery and Tracker Platform for [[lab: | ||
+ | * Data/ | ||
* Environmental monitoring | * Environmental monitoring | ||
* WLAN mesh networking | * WLAN mesh networking | ||
* Possible hosting platform for [[http:// | * Possible hosting platform for [[http:// | ||
- | * Distributed SDR Grid (combined with RTL/ | + | * Distributed SDR Grid (combined with RTL/OsmoSDR/ |
* Combined Aperture Array Radio Telescope | * Combined Aperture Array Radio Telescope | ||
* Distributed Cube/ | * Distributed Cube/ | ||
* Possible hosting platform for [[http:// | * Possible hosting platform for [[http:// | ||
- | * Autonomous | + | * APT/NOAA reception |
* ADS-B Grid reception | * ADS-B Grid reception | ||
* POCSAG broadcasting | * POCSAG broadcasting | ||
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==== TP-Link TL-MR3020 ==== | ==== TP-Link TL-MR3020 ==== | ||
- | The TP-Link TL-MR3020 by itself consumes a maximum of **1.25W**. That totals at 30Wh per day and is, for the moment that is, the perfect choice for an independent, | + | The TP-Link TL-MR3020 by itself consumes a maximum of **1.25W**. That totals at 30Wh per day and is, for the moment that is, the perfect choice for an independent, |
^ Specs ^ ^ ^ | ^ Specs ^ ^ ^ | ||
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| Full Assembly Size | 60x62x17mm (incl. USB/LAN ports) |:::| | | Full Assembly Size | 60x62x17mm (incl. USB/LAN ports) |:::| | ||
| Orig. Case Size | 67x74x22mm |:::| | | Orig. Case Size | 67x74x22mm |:::| | ||
+ | |||
+ | ==== GL-Inet-6416 ==== | ||
+ | |||
+ | There is also the GL-Inet-6416a, | ||
+ | |||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | If you want to use an external antenna with the 6416, have a look at: | ||
+ | |||
+ | [[mission: | ||
+ | |||
+ | ==== GL-Inet AR300M ==== | ||
+ | |||
+ | Gl-Inet has released a new model, the [[https:// | ||
+ | |||
+ | If you're looking to build your own openwrt for the ar300m, you can use this repo: | ||
+ | |||
+ | https:// | ||
==== Power & Performance Analysis ==== | ==== Power & Performance Analysis ==== | ||
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=== External WLAN Antenna Hack === | === External WLAN Antenna Hack === | ||
- | The only major drawback of the TL-MR3020 is the lack of an external antenna connector, this however can be easily hacked in four simple steps and takes less than 15 minutes. The [[http:// | + | The only major drawback of the TL-MR3020 is the lack of an external antenna connector, this however can be easily hacked in a couple of simple steps and takes less than 15 minutes. The [[http:// |
- | Although it appears as if the AR9330 has two symmetric antenna outputs on-board and the TL-MR3020 has two etched antennas on the PCB, the route to Antenna1 is actually going to Antenna2. The route originally going to Antenna2 is only partly equipped (probably termination) and not connected to any antenna. The lack of available datasheets for the AR9330 made this a guess and test hack and luckily the guess was right, as the final tests have shown. | + | Although it appears as if the AR9330 has two symmetric antenna outputs on-board and the TL-MR3020 has two etched antennas on the PCB, the route to Antenna1 is actually going to Antenna2. The route originally going to Antenna2 is only partly equipped (probably termination) and not connected to any antenna. |
- | <WRAP round alert> | + | The lack of available datasheets for the AR9330 made this a guess and test hack and although the first approach (see below) worked for us, it unfortunately introduced |
- | There have been reports | + | |
- | </ | + | {{: |
+ | |||
+ | |||
+ | Of course there is also an example for a pigtail as well. | ||
<WRAP round tip> | <WRAP round tip> | ||
**HOWTO: | **HOWTO: | ||
- | | + | |
- | | + | |
- | - Solder the coax shield | + | |
- | | + | Cut/file the edge of the PCB as shown in the image. Make sure that there is no connection left between the two golden strips at the edge. |
+ | * **Option A: If you want to use a Pigtail**: | ||
+ | Solder the center of RG-174 (or the like) coax cable to the left pad (connected | ||
+ | | ||
+ | Solder the center pin (round) | ||
+ | | ||
+ | Use hot glue or something like it to fix the cable/ | ||
</ | </ | ||
- | [{{:lab:tl-mr3020-wlan-antenna-hack1.jpg?295|Step 1: Remove J4}}] | + | [{{: |
- | [{{:lab:tl-mr3020-wlan-antenna-hack2.jpg?295|Step 2 & 3: Connect coax cable}}] | + | [{{: |
- | [{{:lab:tl-mr3020-wlan-antenna-hack4.jpg?295|Detail of coax connection}}] | + | [{{: |
- | [{{:lab:tl-mr3020-wlan-antenna-hack3.jpg?295|Final Overview}}] | + | [{{: |
~~CL~~ | ~~CL~~ | ||
- | Special | + | Special |
<WRAP round important> | <WRAP round important> | ||
If anyone has the datasheets and could share some insight on the AR9330' | If anyone has the datasheets and could share some insight on the AR9330' | ||
</ | </ | ||
+ | |||
+ | <WRAP round alert> | ||
+ | There have been reports of EM related damage to MR3020 routers that have been hacked the way shown below. It seems that the cut off capacitors after J4 were put there for EM protection rather than matching the antenna. **Please follow the method shown above to have proper EM protection for your router' | ||
+ | </ | ||
+ | |||
+ | [{{: | ||
+ | [{{: | ||
+ | [{{: | ||
+ | [{{: | ||
+ | |||
+ | ~~CL~~ | ||
===== Microcontroller ===== | ===== Microcontroller ===== | ||
* ATMega328 based system control/ | * ATMega328 based system control/ | ||
* Modularized Firmware in C (one module per tasking option) | * Modularized Firmware in C (one module per tasking option) | ||
- | * Serial communication to ARM Host | + | * Serial communication to Host |
- | * Monitoring & controlling battery supply/low power shut down of ARM Host | + | * Monitoring & controlling battery supply/low power shut down of Host |
===== RF Tasking ===== | ===== RF Tasking ===== | ||
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http:// | http:// | ||
http:// | http:// | ||
+ | |||
+ | In order to protect the sensor from IR/UV radiation and harsh weather, the sensor must be housed in a special housing that allows airflow but keeps the sensor safe and measurements reliable. For that purpose stevenson screens have served well in the past. A new fully 3D printable stevenson screen has been developed for that purpose: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Source: https:// | ||
==== Ground Temperature ==== | ==== Ground Temperature ==== | ||
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==== MPPT Charge Controller ==== | ==== MPPT Charge Controller ==== | ||
- | In order to get familiar with MPPT battery charge controller | + | In order to get familiar with MPPT battery charge controller, it's planned |
'' | '' | ||
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{{: | {{: | ||
+ | <WRAP round tip> | ||
+ | Work on the new, extremely efficient and reliable maximum-power-point tracking, buck/boost solar charge controller has finally begun: [[lab: | ||
+ | </ | ||
==== Power Converter ==== | ==== Power Converter ==== | ||