--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Sun, Feb 12, 2017 at 2:30 PM, Internet <[email protected]> wrote: > First look at PCB3 is finished, it is of course possible I am missing > something. Anyways, following caught my eyes: > > 1. the usb otg charger ic has two capacitors between regn and ground, > total value: 11.5uF, datasheet says 1uF. probably no issue though > 2. 10k thermistor for the otg charger is connected to voltage divider > and through another thermistor to bat-v (fuel guage), datasheet says it > should be connected to ground (i am not to sure about the guage though, > reference application is pretty chaotic and complex) > 3. status leds should be connected to sys-v (nothing to do if dvcc = > sys-v) > 4. EOMA68-5V0 is not connected to anything, this results in an > unpowered card on pcb1 (which is bad); should probably be connected to > vcc-5v0) > 5. level shifter is completely unnecessary because lcd-vcc = vrefttl = > 3v3; connect 10k pullup resistors to vrefttl and add pullup for chg_irq to > vrefttl > > TI bat IC is 1.8v.. wasn't happy with that. > > 1. because eoma68-i2c is not used on this pcb remove pullups > > _great_. encourages me to take a look and check. > > > I hope this helps and if I misunderstood something, please let me know. > The fuel guage circuit is more complex than expected, I let you know if > there is an issue. > > Do you want me to put all this on rhombus-tech.net? If so, could you give > me some instructions where and how to put it? > http://rhombus-tech.net/community_ideas/laptop_15in/pcb2/ then just work it out, put whatever you feel is appropriate and i'll review it and move / adjust if necessary. > Additionally, to edit the pages I need some kind of account creation > password … > ah! sorry, i added that recently after there were attacks on the page -- it's "passwordreqd" > Julius Lehmann > > On 11.02.2017 15:00, Luke Kenneth Casson Leighton wrote: > > > > --- > crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 > <http://t224.mjt.lu/lnk/AEMAHqt4STUAAAAAAAAAAGbE2wkAASHlFNUAAAAAAAZHgABYoHFzFqkoe5j4S8W7hrvGQMA-BwAGAjk/1/MkNnISYr4-hglOBjM6YUqw/aHR0cHM6Ly93d3cuY3Jvd2RzdXBwbHkuY29tL2VvbWE2OA> > > On Sat, Feb 11, 2017 at 1:33 PM, Internet <[email protected]> wrote: > >> You are absolutely right. Putting comments separately is the best thing >> to do. I just found the edit button on rhombus-tech.net >> <http://t224.mjt.lu/lnk/AEMAHqt4STUAAAAAAAAAAGbE2wkAASHlFNUAAAAAAAZHgABYoHFzFqkoe5j4S8W7hrvGQMA-BwAGAjk/2/0gqbLOpYPVPZzmn-W6fIhw/aHR0cDovL3QyMjQubWp0Lmx1L2xuay9BRHNBQUdYeHRoTUFBQUFBQUFBQUFHYkUyd2tBQVNIbEZOVUFBQUFBQUFaSGdBQllueExBV2RocTRJTjNRZWVoRmRQdHN5eHZvd0FHQWprLzEvOXZlenUwMUlMT2hkSExDTENHVTA2QS9hSFIwY0RvdkwzSm9iMjFpZFhNdGRHVmphQzV1WlhR> >> ;), this should definitely make things easier ... >> > > yay, magic. also stops duplication and AOL-style me-too postings. if > anyone remembers the AOL bbs... > > l. > > > _______________________________________________ > arm-netbook mailing list > [email protected]http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > > <http://t224.mjt.lu/lnk/AEMAHqt4STUAAAAAAAAAAGbE2wkAASHlFNUAAAAAAAZHgABYoHFzFqkoe5j4S8W7hrvGQMA-BwAGAjk/3/QzsVz1TKCdXr54efyTuzyg/aHR0cDovL2xpc3RzLnBoY29tcC5jby51ay9tYWlsbWFuL2xpc3RpbmZvL2FybS1uZXRib29r> > Send large attachments to [email protected] > > > > > _______________________________________________ > arm-netbook mailing list [email protected] > http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > Send large attachments to [email protected] >
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