<![CDATA[Core Ink battery status]]>I can't find a way to get the state of the battery using UIFlow. Any hint?

]]>https://community.m5stack.com/topic/3671/core-ink-battery-statusRSS for NodeWed, 29 Apr 2026 04:12:47 GMTSat, 23 Oct 2021 03:54:57 GMT60<![CDATA[Reply to Core Ink battery status on Sun, 25 Jun 2023 09:10:18 GMT]]>@ebksuper By digging the web I found a python script what translates to this in UIFLOW / BLOCKLY.
I translated this the best I could to UI FLOW.

The mAh are of the specs of CORE INK and my full loaded battery gave out on "get battery voltage" 4242 asuming this translates to 4.2V.
So far it spits out reasonable numbers. I am testing if this is accurate enough to be an indicator when to recharge.

Please comment if you found errors or have a more elegant solution to get a Batters Status.
Thanx : )

UIFLOW image for Batter status

#uiflow #battery #coreink #m5stack #core

]]>https://community.m5stack.com/post/21311https://community.m5stack.com/post/21311Sun, 25 Jun 2023 09:10:18 GMT<![CDATA[Reply to Core Ink battery status on Fri, 23 Jun 2023 07:32:30 GMT]]>@leopoldking Hi there, I try to implement such a notice as well. As mentioned here by other, I as well dont care about accuracy, more about a warning when the unit needs to be recharged.

My Full Battery starts at around 4242. so on what number the unit wont be able to turn on?

I display 4 states "100, 75, 50, 25 and LOW BAT" based on values of the "get battery voltage" but I couldn´t find out yet below what voltage the unit is "dead".

  • Maybe someone has data on battery usage with the core ink?
  • What is the minimum battery voltage the core ink needs to operate?

thanx for any hints

ps:
I implemented a cycle every 4 hrs to "wake up" - "connect to ssid" - "get battery voltage" - "get ntp time and date" - "write ntp to json" - "read json" - "display infos on several labels" - "refresh display (two times and 2 times partial)" - "power off after 3 minutes". Each cycle consumes around 35-40 of that full 4242.

#coreink #battery #batterystatus #voltage

]]>https://community.m5stack.com/post/21280https://community.m5stack.com/post/21280Fri, 23 Jun 2023 07:32:30 GMT<![CDATA[Reply to Core Ink battery status on Mon, 14 Feb 2022 22:07:10 GMT]]>@luarmr From what I noticed is that a voltage above 5V it's charging. Right now I'm trying to figure out the state that its battery is running low and I need to charge it soon.

]]>https://community.m5stack.com/post/16656https://community.m5stack.com/post/16656Mon, 14 Feb 2022 22:07:10 GMT<![CDATA[Reply to Core Ink battery status on Wed, 27 Oct 2021 02:12:03 GMT]]>@felmue Thanks let's see if I can figurate something.
The only thing that I want is to know that the battery is low. I don't really need an exact number.

]]>https://community.m5stack.com/post/15252https://community.m5stack.com/post/15252Wed, 27 Oct 2021 02:12:03 GMT<![CDATA[Reply to Core Ink battery status on Sat, 23 Oct 2021 20:28:37 GMT]]>Hello @luarmr

well, you can't really, at least not very accurately. The battery voltage can go up and down quite a bit depending on what M5CoreInk is doing (e.g. idle, update screen, etc.). The best you could try is starting from a full battery, then periodically read and record the voltage over normal usage until it dies and then use that for future discharge cycles.

To more accurately measure the capacity that is left in a battery you'll need more information, e.g. current going into (during charging) and out of (when used) the battery. Unfortunately the architecture in M5CoreInk doesn't allow to gather any information (charging, not charging, charge state, etc.) but the battery voltage.

Thanks
Felix

]]>https://community.m5stack.com/post/15223https://community.m5stack.com/post/15223Sat, 23 Oct 2021 20:28:37 GMT<![CDATA[Reply to Core Ink battery status on Sat, 23 Oct 2021 19:00:22 GMT]]>@felmue thanks for answering, how I can use this information to know how much battery left is in the device? Sorry if this is a very basic question, I am learning.

]]>https://community.m5stack.com/post/15222https://community.m5stack.com/post/15222Sat, 23 Oct 2021 19:00:22 GMT<![CDATA[Reply to Core Ink battery status on Sat, 23 Oct 2021 06:53:13 GMT]]>Hello @luarmr

the best there is for M5CoreInk is the battery voltage under Hardware - Battery - Get battery voltage.

Thanks
Felix

]]>https://community.m5stack.com/post/15214https://community.m5stack.com/post/15214Sat, 23 Oct 2021 06:53:13 GMT