Building an extremely small ARPS Tracker: Unterschied zwischen den Versionen
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== Project goal == | == Project goal == | ||
| − | This project has the goal to assemble a lowest possibly imaginable power saving and absolute supercompact highly packed APRS | + | This project has the goal to assemble a lowest possibly imaginable power saving and absolute supercompact highly packed APRS tracking transmitter. At last, I want to be able to visualize my position...! |
== Ingredients == | == Ingredients == | ||
At last, I got all my ingredients collected: | At last, I got all my ingredients collected: | ||
| − | * EM-406A, a 20 Channel SiRF III GPS Receiver from USGlobalSat with Antenna | + | * [http://www.globtech.de/gps-engine-board-em406a-navilock-p-12337.html EM-406A], a 20 Channel SiRF III GPS Receiver from USGlobalSat with Antenna |
* Open Tracker SMT | * Open Tracker SMT | ||
| − | * Radiometrix HX1-144.800-3 300 mW transmitter | + | * [http://www.rfdesign.co.za/pages/5645456/Products/Amateur-Radio/Amateur-Radio.asp Radiometrix HX1-144.800-3] 300 mW transmitter |
| − | + | * [http://www.eham.net/reviews/detail/5818 Comet SMA-501] 0dBi 1/4 wave miniature antenna | |
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== Data == | == Data == | ||
| Zeile 19: | Zeile 14: | ||
* http://www.sparkfun.com/datasheets/GPS/EM-406A_User_Manual.PDF EM-406A User Manual | * http://www.sparkfun.com/datasheets/GPS/EM-406A_User_Manual.PDF EM-406A User Manual | ||
* http://www.datasheetarchive.com/pdf-datasheets/Datasheets-3/DSA-56110.pdf RadioMetrix Module Datasheet | * http://www.datasheetarchive.com/pdf-datasheets/Datasheets-3/DSA-56110.pdf RadioMetrix Module Datasheet | ||
| + | * http://kr.ic-on-line.cn/IOL/datasheet/mc908jl16cdwe_736434.pdf Datasheet for the Microcontroller in the OpenTracker SMT | ||
=== References === | === References === | ||
| Zeile 75: | Zeile 71: | ||
== Project plan == | == Project plan == | ||
* Find a cabling arrangement that works on my BreadBoard, using the Arduino USB/Serial interface. | * Find a cabling arrangement that works on my BreadBoard, using the Arduino USB/Serial interface. | ||
| − | |||
* Rearrange all the three components on minimal space | * Rearrange all the three components on minimal space | ||
* Build a suitable case | * Build a suitable case | ||
| + | * Program the Opentracker SMT | ||
| + | * Deploy and Track | ||
| + | |||
| + | == Progress == | ||
| + | * 2009-11-05 I got my GPS box up and running. Produces really nice output. Also got the Radiometrix transmitter up and running. Produces a nice signal. Now I still need to get the OpenTracker up and running. | ||
| + | * 2009-11-07 Well, the tracker is not so small after all, but it still all fits into my palm, and this all includes the battery. The case is now ready and I am just finalizing everything. Still need to program the uC with my callsign. | ||
| + | * 2009-11-11 I heard recently that there's going to be a new APRS repeater in our region ([http://www.db0sad.de/ DB0SAD]). At last, I can use the device as a counterpart for my APRS node, which is currently inactive: [[Using the ASUS WL-500gP as a APRS digi]] | ||
| + | * 2009-11-14 I see that it is necessary to connect RegOut (5V out from the voltage regulator) with the RegIn that expects 5V input. This is necessary that the CPU can run. I also see that the HX1 module and the Tracker just like that won't co-oeprate. The OT+ draws PTT to LOW, but the HX1 expects PTT ro be HIGH (same voltage as Input Power). I solve the problem with a BC337 (general purpose) PNP and a 4.7kOhm transistor. Yet, still my tracker does not want to transmit... | ||
| + | |||
| + | |||
| + | == Assembly == | ||
| + | |||
| + | Still on the breadboard... | ||
| + | |||
| + | [[Image:MyOwnOpenTrackerSMT.jpg|400px]] | ||
| + | |||
| + | Assembly... In other projects I have made excellent experiences with U-profiles that can hold PCB boards. Also in this case I took small snippets of U profiles and soldered them into the base box so they can hold both my carrier boards for the OpenTracker and for the RadioMetrix module. | ||
| + | |||
| + | [[Image:RadiometrixHX1-144.800-3.jpg|400px]] [[Image:MyOwnOpenTrackerSMT-MountedSlots.jpg|400px]] | ||
| + | |||
| + | [[Image:MyOwnOpenTrackerSMT-MountedSlots2.jpg|400px]] [[Image:MyOwnOpenTrackerSMT-MountedFinal.jpg|400px]] | ||
| + | |||
| + | [[Image:MyOwnOpenTrackerSMT1.jpg|400px]] [[Image:MyOwnOpenTrackerSMT2.jpg|400px]] | ||
| + | |||
| + | [[Image:MyOwnOpenTrackerSMT3.jpg|400px]] [[Image:MyOwnOpenTrackerSMT4.jpg|400px]] | ||
| + | |||
| + | [[Image:MyOwnOpenTrackerSMT5.jpg|400px]] [[Image:MyOwnOpenTrackerSMT6.jpg|400px]] | ||
== Tests == | == Tests == | ||
* Since I have my APRS relay station ready to go anyway, I just need the tracker to start tracking! | * Since I have my APRS relay station ready to go anyway, I just need the tracker to start tracking! | ||
Aktuelle Version vom 11. Januar 2010, 23:36 Uhr
Inhaltsverzeichnis
1 Project goal
This project has the goal to assemble a lowest possibly imaginable power saving and absolute supercompact highly packed APRS tracking transmitter. At last, I want to be able to visualize my position...!
2 Ingredients
At last, I got all my ingredients collected:
- EM-406A, a 20 Channel SiRF III GPS Receiver from USGlobalSat with Antenna
- Open Tracker SMT
- Radiometrix HX1-144.800-3 300 mW transmitter
- Comet SMA-501 0dBi 1/4 wave miniature antenna
3 Data
3.1 Datasheets
- http://www.sparkfun.com/datasheets/GPS/EM-406A_User_Manual.PDF EM-406A User Manual
- http://www.datasheetarchive.com/pdf-datasheets/Datasheets-3/DSA-56110.pdf RadioMetrix Module Datasheet
- http://kr.ic-on-line.cn/IOL/datasheet/mc908jl16cdwe_736434.pdf Datasheet for the Microcontroller in the OpenTracker SMT
3.2 References
- http://www.sparkfun.com/datasheets/GPS/NMEA%20Reference%20Manual1.pdf NMEA Reference
- http://wiki.argentdata.com/index.php/OpenTracker%2B
3.3 Other data
The tracker's inner values:
* Voltage: DC 6.5 to 28V unregulated or 5V DC regulated * Current: 8 mA idle, 20 mA transmitting Max 200 mA @ 5 V available for GPS * Modes: 1200 bps AFSK (send and receive); 300 bps AFSK, PSK31 (send only) * Radio Connector: pin header * Serial Connector: pin header * Dimensions: 31mm x 18mm x 5mm * GPS interface: NMEA in/out
Pinout:
Pin Name Funktion 1 5VIN Geregelter 5-Volt-Eingang 2 RxD RS-232 Data in der (vom GPS oder Computer) 3 1Wire Dallas 1-Draht-Bus für externe Sensoren 4 AOUT Audio-Ausgang an Radio 5 ADC5 Analog-Eingang 6 T1CH1 Timer-Kanal 7 ADC6 Analog-Eingang 8 RST Reset (active low) 9 ADC7 Analog-Eingang 10 IRQ- Transmit-now, Profil wählen, oder Zähler 11 ADC8 Analog-Eingang 12 ADC9 Analog-Eingang 13 AIN Audio-Eingang von Radio 14 ADC4 Analog-Eingang 15 ADC3 Analog-Eingang 16 TXD RS-232 Data aus 17 rot rot LED-Ausgang 18 grün grün LED-Ausgang 19 ADC2 Analog-Eingang 20 ADC1 Analog-Eingang 21 PTT Push-to-talk-Signal an Radio 22 REGOUT Regulator-Ausgang - 5 Volt 23 GND Ground 24 REGIN Regulator-Eingang - 6,5 bis 28 Volt
- http://www.jaeger-edv.de/Shop/index.php?page=shop.getfile&file_id=40&product_id=25&option=com_virtuemart&Itemid=53 Config Tool for the OpenTracker SMT
The following picture is from ArgentData:
And here's how to use the USB / Serial adapter from the Arduino projects: http://arduino.cc/en/Guide/ArduinoMini
I am using this adapter to program the SMT chip.
4 Project plan
- Find a cabling arrangement that works on my BreadBoard, using the Arduino USB/Serial interface.
- Rearrange all the three components on minimal space
- Build a suitable case
- Program the Opentracker SMT
- Deploy and Track
5 Progress
- 2009-11-05 I got my GPS box up and running. Produces really nice output. Also got the Radiometrix transmitter up and running. Produces a nice signal. Now I still need to get the OpenTracker up and running.
- 2009-11-07 Well, the tracker is not so small after all, but it still all fits into my palm, and this all includes the battery. The case is now ready and I am just finalizing everything. Still need to program the uC with my callsign.
- 2009-11-11 I heard recently that there's going to be a new APRS repeater in our region (DB0SAD). At last, I can use the device as a counterpart for my APRS node, which is currently inactive: Using the ASUS WL-500gP as a APRS digi
- 2009-11-14 I see that it is necessary to connect RegOut (5V out from the voltage regulator) with the RegIn that expects 5V input. This is necessary that the CPU can run. I also see that the HX1 module and the Tracker just like that won't co-oeprate. The OT+ draws PTT to LOW, but the HX1 expects PTT ro be HIGH (same voltage as Input Power). I solve the problem with a BC337 (general purpose) PNP and a 4.7kOhm transistor. Yet, still my tracker does not want to transmit...
6 Assembly
Still on the breadboard...
Assembly... In other projects I have made excellent experiences with U-profiles that can hold PCB boards. Also in this case I took small snippets of U profiles and soldered them into the base box so they can hold both my carrier boards for the OpenTracker and for the RadioMetrix module.
7 Tests
- Since I have my APRS relay station ready to go anyway, I just need the tracker to start tracking!
