João, Thank you for the kind words. Good luck with your project of adding a display to the PB. You should definitely share that here if it is successful.
I agree that the Octavo SIPs make it easy to contemplate making a custom board. I actually corresponded with them and they were testing one of the SIPs that had different PMIC wiring that would allow true battery operation (charging while system powered down). But I never heard if they finished testing this. I wanted to make a board using that device and a cellphone LCD/cap touch screen. I thought (still think) it would be a useful addition to the SBC world. Cheers, Dan On Saturday, July 6, 2019 at 10:16:22 AM UTC-6, João Manoel wrote: > > Hi Dan, > > thank you to share your project, really nice :) > > I saw that you used the standard pocketbeagle. I also noticed that you are > the author of a hackday.io article about the PMU inside the pocketbeagle > which I'm also interested in that. > > Like you, I also have a project that uses the Rpi zero, and I needed to > stop working on that due to the workarounds that I had to do to make it a > portable system. The Rpi doesn't support any kind of low power modes > (sleep, suspend to RAM ...), doesn't have PMU and we have to use SPI or > HDMI to drive an LCD display which is a problem in performance, and power > efficiency. > > I saw on the beagleboards a light because we have the PMU, and an LCD > driver ready to use without any proprietary firmware, I don't need HDMI > output and I don't want to waste power to feed HDMI IC's. Everything with a > trully open hardware system is a dream! Also with the Octavo system in a > package, I could design a more professional system without been too complex > for a hobbyist point of view, and maybe I could even try to solder the BGA > chip myself. So, now I have space to work in my software and If everything > goes well I could even try to go to a customized board. > > So, the pocketbeagle seemed a good start to work, but the lack of the LCD > pins and the things that you mentioned in your article about the PMU really > broke my legs. The BBB (standard, and Wireless) are big boards, has many > things that I don't need and will consume my power resources. Would be a > good addition to have wifi (and switch it off when it is not needed), but > the wireless version doesn't have wifi when working on battery.... > > When my boards arrive, next week, I will work on the BBB wireless before, > and in the future, I will try to hook some wires from the resistors that > configure the boot, and see if I can drive an RGB LCD. I really don't want > to go to SPI LCD's for now, maybe just to try. > > Have a good weekend. > > Best regards, > > > Em sábado, 6 de julho de 2019 16:43:17 UTC+2, Dan Julio escreveu: >> >> Although it isn't the 4.3" CAPE, I have gotten a generic and inexpensive >> 2.8" ILI9348-based SPI display to work with the Pocketbeagle (and >> Beaglebone black). It seems reasonably fast although I'm sure not as fast >> as the parallel display. I haven't yet gotten the built-in TSC2046 >> resistive touch controller to work yet. I've attached the dts file for the >> display. You can see how I wired it up at the following github page: >> >> https://github.com/danjulio/lepton/tree/master/pocketbeagle >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/3cf0a971-01d8-4d32-8686-a5fd77fe3d60%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
