Osmo-nvs-gps » History » Version 9
laforge, 02/21/2016 10:37 AM
| 1 | 8 | laforge | {{>toc}} |
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| 2 | 1 | laforge | |
| 3 | 8 | laforge | h1. osmo-nvs-gps |
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| 6 | 1 | laforge | This is a small evaluation board for the NVS NV08C-CSM integrated GPS, Galileo and Glonass receiver. |
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| 8 | 5 | laforge | Like all Osmocom projects, it is fully open source, i.e. all schematics, layout files, etc. are released |
| 9 | publicly. |
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| 11 | 1 | laforge | It provides access to the two UARTS as well as SPI and I2C interface of the module, optional backup |
| 12 | 2 | laforge | battery for avoiding cold-start on power-loss and a MCX socket for connecting the antenna. |
| 13 | 1 | laforge | |
| 14 | 9 | laforge | !{width:50%}osmo-nvs-gps.jpg! |
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| 17 | 8 | laforge | h3. Schematics and component placement |
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| 20 | 3 | laforge | The schematics and layout source files are available from the git repository which can be browsed at http://cgit.osmocom.org/cgit/osmo-nvs-gps/ |
| 21 | 5 | laforge | |
| 22 | 1 | laforge | PDF rendering of schematics and component placement files can be found at |
| 23 | http://git.osmocom.org/osmo-nvs-gps/plain/hardware/nvs_gps_schem.pdf and http://git.osmocom.org/osmo-nvs-gps/plain/hardware/nvs_gps_board.pdf, respectively |
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| 26 | 8 | laforge | h3. Part numbers |
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| 29 | 1 | laforge | All capacitors, inductors and resistors are 0603 footprint, with the exception of C1 (0402). |
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| 31 | 8 | laforge | * MCX socket is a Tyco Electronics 1-1337581-0 |
| 32 | * CR2032 battery holder is a MPD BA-2032 |
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| 33 | * The 2.5mm jacks are SJ-2523-SMT |
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| 34 | 1 | laforge | |
| 35 | 5 | laforge | |
| 36 | 8 | laforge | h3. Jumpers |
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| 39 | 8 | laforge | * J1 connects VBAT with VCC, i.e. should _only_ be placed if you _do not have a battery attached_ |
| 40 | * J1 connects VIO with VCC. This is the case when VIO (Voltage for digital i/o) is _not provided by an external circuit attached to X2 |
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| 41 | * JP4 is the power supply connector. Apply 3.8..6V regulated DC power to it. Center pin is positive, outer pins both GND |
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| 44 | h2. Where to buy |
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| 47 | 5 | laforge | As this is an open source hardware design, you can just have the PCB manufactured, buy all the components and build it yourself. |
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| 49 | 8 | laforge | However, for your convenience, complete DYI kits are available from the "sysmocom webshop":http://shop.sysmocom.de/products/osmo-nvs-eval. |
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| 51 | 8 | laforge | |
| 52 | h2. Who |
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| 54 | 1 | laforge | |
| 55 | osmo-nvs-gps was designed and developed by Harald Welte. Funding for prototypes by sysmocom. |
