Re: Rpi 5 & UPS
¿ªÔÆÌåÓýIf you see the top line of my screen shot, it says it¡¯s backwards compatible with nearly all previous Pi models with a 40 pin header.? This doesn¡¯t use pogo pins but a jumper cable for various GPIO assignments and 3.3v, 5v and Gnd. I can¡¯t say if it¡¯s compatible with a Rpi 5 as it wasn¡¯t even invented when this spec sheet was published but if the Pi5 uses the same pin assignment as the Pi4, I can¡¯t see any reason why it won¡¯t work.? ? I personally use two different versions. 1 has 8 batteries and the other 12 and will happily run at full tilt for 16 hours.? I also have a much more power hungry Nvidia Jetson Nano (several actually) in my workshop and they last days in 5w mode when power is lost. Obviously the Nano and Pi aren¡¯t compatible but what I believe is possible is stacking even more batteries perhaps 24 or more, however, the circuit simply isn¡¯t beefed up enough to charge such high capacity and the limit for the X750 is 12 x 18650 and around 38.4amp total capacity via the XH2.54 connector. ? ? Geekworm claim there is no limit to stacking X750-A2 battery boards but the overall charge current will only be 2.5amp. So recharging 12 batteries from a presumed flat (only a fool would run their 18650¡¯s that¡¯s low) but for the sake of argument it would take a little over 16 hours to recharge. I use genuine Panasonic 18650¡¯s and they seem to last ages and take around 11 hours (basically over night) to recharge 12 from 25% capacity. ? I will buy a Raspberry pi5 in the coming week and try out my X750 on it but confident it will work but I would suggest wait until you hear from SupTronics as they may have modified version in the pipeline.? ? Kind regards, De Spence M0STO? Sent while portable! please excuse typos. On 4 Nov 2023, at 01:34, David Ranch <rpi4hamradio-groupsio@...> wrote:
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Spence G5STO