domingo, 24 de enero de 2021

UPS for RASPBERRY

I will show you another improvement with a UPS for RASPBERRY with control of power parameters by Domoticz (Voltage, Current, Power and % of battery) that will allow us to have power in case of power failure and that can also power the USB HDD of the  previous article

I notice that there are several types of UPS, after testing a pair finally the one that is giving an optimal performance is:

https://www.waveshare.com/wiki/UPS_HAT

You can also control the electronic parameters of it and have the information passing it through scripts to Domoticz.


Finally, just add that there is another battery powered model for Raspberry that also incorporates RTC (Clock):

https://wiki.52pi.com/index.php/UPS_(With_RTC_%26_Coulometer)_For_Raspberry_Pi_SKU:_EP-0118

The drawback is that I only see usefulness for working with Raspberry in mobility projects since once the batteries are charged to 100% and the power supply is stable for a few hours, it cuts the battery charge and therefore the power supply to the Raspberry so it is not feasible for installations where we want to use said batteries as a UPS system for cases of sporadic power outages. Even so, there is the possibility of cutting the load daily for 5 minutes to force the circuit to never cut off the power supply and therefore the power to the Raspberry.


https://www.youtube.com/watch?v=SA00KE-7wHw&lc=UgxgZZvnrr_mTLmBy2R4AaABAg.960_c0UlAaj9IkCREuRLnI&feature=em-comments

domingo, 17 de enero de 2021

RaspberryPi + Domoticz + USB HDD to Solve SD life expectancy

After 5 years using Domoticz on a Raspberry in different homes, I have found that the SD cards with this type of server end up being corrupted, to avoid this problematic is common the generation of backups from time to time so when comes the day it stops working we can clone the SD from the image that we extracted in the last backup. 

As a solution to this problem we have the use of an HDD either mechanical or SSD, many of these have dropped in price then I have considered that it was a good improvement to the system,

Down I am attaching a link with which you can clone the SD to a HDD connected by USB, plus some points to keep in mind:



- The HDD must be externally powered so that when the Raspberry boots the HDD is already on to start the boot sequence, there are SATA cables with external power supply or USB HUBS with this feature as well.

- You must activate the option in the Raspberry to boot from USB and this is done by recording an SD for that matter.

https://www.makeuseof.com/tag/make-raspberry-pi-3-boot-usb/

In a next article I will show you another improvement with a UPS for RASPBERRY with control of power parameters by Domoticz (Voltage, Current, Power and % of battery) that will allow us to have power in case of power failure and that can also power the USB HDD as well.


P.D. - Maybe if after all the Raspberry not boot with the new HDD te next step is  to verify  PARTUUID for the root partition is correct in /boot/cmdline.txt and /etc/fstab and correct or disable UUID.

domingo, 3 de enero de 2021

Apple Watch option with Roller Skating after EOF of Endomondo? - Welcome again Sport Tracker !!

 After a couple of weeks looking for a Iphone App with the option to select the Skating / Roller Sport option I remebered a old App thaht i was using years ago with Nokia, and yes is still Alive and has the App for the Apple Watch with the complete list of Sports showed on the Iphone App also showed on the Apple Watch (This is rare but a lot of Sport Iphone apps don`t show all options of the diferrents sports on the Apple Watch)

Old Sport Tracker screen on Symbian Nokia Phones:



And the App is still alive after a lot of years and updated (Iphone/Watch Version..)