Fundraising for GTA04A5 has started!
Hi all, after solving some issues, we finally have started the fundraising campaign for producing more GTA04 boards (revision GTA04A5 having improvements). So the story continues! And we have good news for those who don't own or want to cannibalise their GTA01/02: we have stock of a bunch of used GTA02 devices. For details, please refer to: http://lists.goldelico.com/pipermail/community/2013-November/000646.html http://shop.goldelico.com/wiki.php?page=GTA04A5 Happy Freerunning, Nikolaus Schaller ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
What are the likely power consumption improvements in the A5? Or is that mainly a software issue? What will the relationship be between this and the Neo900? Will the Neo900 motherboard include some of the upgraded A5 components? Good luck, I will be watching with interest (and might put some money down). Dominic ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
Hi, Am 22.11.2013 um 12:17 schrieb Dominic Walden: What are the likely power consumption improvements in the A5? There are some power consumption related things planned: 1. separate the GPIOs to control power of RS232 and IrDA so that both can be switched off in suspend state - this should save another 3-5mA. 2. have a GPIO monitor if the modem is turned on/off 3. use a GPIO to control WiFi power and not an LDO (so we can switch off the LDO) 4. replace compass and gyroscope by other chips that need less power Or is that mainly a software issue? Yes, there appears to be still much in the software an it appears that the SoC is no completely powered down. And what we are evaluating is the risk to swap the USB3322 (USB PHY) with a Texas instruments recommended replacement. The problem is that we can't build a protoype to test that other chip and installing either one has too tight space contraints. What will the relationship be between this and the Neo900? Will the Neo900 motherboard include some of the upgraded A5 components? Depends. The Neo900 is a new design based on experiences from the GTA04 project, and we try to share some components. But the Neo900 is planned to be compatible to the Fremantle software which needs to add some hardware that the GTA04 simply does not need (e.g. a second audio codec). Good luck, I will be watching with interest (and might put some money down). Tnx, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. -Pascal http://www.wi-flight.net/ ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. I think we can not easily change to use something different than the WSG0084 using a Sirf IV. Unfortunately, the latest datasheet still isn't telling anything about the max. update rate and any updates in the firmware: http://markmail.org/thread/xwvhveabo3ql3mf6 The problem of swapping in a different module is that we have to touch the pcb layout more than planned. And since the camera module is sitting above, we must take care that the replacement module has almost exactly the same dimensions. Finally, it must be easy to purchase it. BR, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
Am 22.11.2013 23:23, schrieb Dr. H. Nikolaus Schaller: Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. I think we can not easily change to use something different than the WSG0084 using a Sirf IV. Unfortunately, the latest datasheet still isn't telling anything about the max. update rate and any updates in the firmware: On page 15 it says: 3: Defined as current drawn during continuous operation at a 10Hz update rate. Could this be a hint, that the module can actually operate at a max. update rate of 10Hz? Is there any GTA04 board, which already has a W2SG0084i installed? If so, we could try to query/set the output rate according to chap. 5 NMEA Input Messages, using the message ID 103. Also chap. 6.2 OSP Input Messages look interesting, especially message 0x81. Cheers, Lukas signature.asc Description: OpenPGP digital signature ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
Am 22.11.2013 um 17:21 schrieb Lukas Märdian: Am 22.11.2013 23:23, schrieb Dr. H. Nikolaus Schaller: Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. I think we can not easily change to use something different than the WSG0084 using a Sirf IV. Unfortunately, the latest datasheet still isn't telling anything about the max. update rate and any updates in the firmware: On page 15 it says: 3: Defined as current drawn during continuous operation at a 10Hz update rate. Could this be a hint, that the module can actually operate at a max. update rate of 10Hz? Unfortunately no. I also stumbled over this sentence but I think they mean the update rate of the current probe, i.e. they did measuer the supply current 10 times per second. Is there any GTA04 board, which already has a W2SG0084i installed? Yes, about 50 or 80 (I don't remember the exact figure) since the W2SG0004i was EOL and could easily be swapped. Unfortunately we don't have a mapping to serial numbers. If so, we could try to query/set the output rate according to chap. 5 NMEA Input Messages, using the message ID 103. That one unfortunately only allows to specify the reporting rate in multiples of 1 second, i.e. up to 255 seconds. But not 1/10 sec. Also chap. 6.2 OSP Input Messages look interesting, especially message 0x81. Cheers, Lukas Maybe someone knows a good technical contact to Wi2Wi? I only have very indirect support though a distributor. BR, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
On Fri, Nov 22, 2013 at 5:37 PM, Dr. H. Nikolaus Schaller h...@goldelico.com wrote: Am 22.11.2013 um 17:21 schrieb Lukas Märdian: Am 22.11.2013 23:23, schrieb Dr. H. Nikolaus Schaller: Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. I think we can not easily change to use something different than the WSG0084 using a Sirf IV. Unfortunately, the latest datasheet still isn't telling anything about the max. update rate and any updates in the firmware: On page 15 it says: 3: Defined as current drawn during continuous operation at a 10Hz update rate. Could this be a hint, that the module can actually operate at a max. update rate of 10Hz? Unfortunately no. I also stumbled over this sentence but I think they mean the update rate of the current probe, i.e. they did measuer the supply current 10 times per second. Is there any GTA04 board, which already has a W2SG0084i installed? Yes, about 50 or 80 (I don't remember the exact figure) since the W2SG0004i was EOL and could easily be swapped. Unfortunately we don't have a mapping to serial numbers. If so, we could try to query/set the output rate according to chap. 5 NMEA Input Messages, using the message ID 103. That one unfortunately only allows to specify the reporting rate in multiples of 1 second, i.e. up to 255 seconds. But not 1/10 sec. Also chap. 6.2 OSP Input Messages look interesting, especially message 0x81. Cheers, Lukas Maybe someone knows a good technical contact to Wi2Wi? I only have very indirect support though a distributor. I don't think that will help you. The interface is SiRF's protocol, not Wi2Wi's and no documentation mentions of a mode above 1 Hz. To my knowledge, no SiRF chipset has support for a faster rate (at least in the frontend, internally, they might). So for 5/10 Hz a u-blox would be needed (or a SkyTraq, which are available up to 20 Hz). BR, Nikolaus ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Fundraising for GTA04A5 has started!
On Fri 22 November 2013 18:22:40 thomasg wrote: On Fri, Nov 22, 2013 at 5:37 PM, Dr. H. Nikolaus Schaller h...@goldelico.com wrote: Am 22.11.2013 um 17:21 schrieb Lukas Märdian: Am 22.11.2013 23:23, schrieb Dr. H. Nikolaus Schaller: Am 22.11.2013 um 15:46 schrieb Pascal Gosselin: What about GPS specifications ? My company would have interest in multiple units if the GPS chip was capable of 5Hz or greater updates. Recent GPS chipsets all seem to have GPS/GLONASS capability, which is very nice to have. I think we can not easily change to use something different than the WSG0084 using a Sirf IV. Unfortunately, the latest datasheet still isn't telling anything about the max. update rate and any updates in the firmware: On page 15 it says: 3: Defined as current drawn during continuous operation at a 10Hz update rate. Could this be a hint, that the module can actually operate at a max. update rate of 10Hz? Unfortunately no. I also stumbled over this sentence but I think they mean the update rate of the current probe, i.e. they did measuer the supply current 10 times per second. Is there any GTA04 board, which already has a W2SG0084i installed? Yes, about 50 or 80 (I don't remember the exact figure) since the W2SG0004i was EOL and could easily be swapped. Unfortunately we don't have a mapping to serial numbers. If so, we could try to query/set the output rate according to chap. 5 NMEA Input Messages, using the message ID 103. That one unfortunately only allows to specify the reporting rate in multiples of 1 second, i.e. up to 255 seconds. But not 1/10 sec. Also chap. 6.2 OSP Input Messages look interesting, especially message 0x81. Cheers, Lukas Maybe someone knows a good technical contact to Wi2Wi? I only have very indirect support though a distributor. I don't think that will help you. The interface is SiRF's protocol, not Wi2Wi's and no documentation mentions of a mode above 1 Hz. To my knowledge, no SiRF chipset has support for a faster rate (at least in the frontend, internally, they might). So for 5/10 Hz a u-blox would be needed (or a SkyTraq, which are available up to 20 Hz). The question arises what for a update rate of 1Hz is useful anyway. Given the precision and jitter in GPS position fixes, a higher rate would probably be useful only for speed values which are derived from doppler effect and thus independant from the positions the GPS chip calculates. Given the assumption that the GPS equipment is mounted inside a mobile object to calculate data about that object's movement and position, maybe exploiting other generic data sources like accelerometer and gyro might yield better results when combined with a pretty standard 1Hz GPS. /j -- () ascii ribbon campaign - against html e-mail /\ www.asciiribbon.org - against proprietary attachments (alas the above page got scrapped due to resignation(!!), so here some supplementary links:) http://www.georgedillon.com/web/html_email_is_evil.shtml http://www.nonhtmlmail.org/campaign.html http://www.georgedillon.com/web/html_email_is_evil_still.shtml http://www.gerstbach.at/2004/ascii/ (German) signature.asc Description: This is a digitally signed message part. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
