@os88 said in 5V stops working m5stickc:

//#include <M5StickC.h>

I only had the problem, when i uploaded my code the StickC was on. If i turned it off, i was not able to turn it back on with the power button.

Just like you i had commented out the m5stack.h code.

//#include <M5StickC.h>

Have you tried it when the code Is not uncommitted?

Is it the 5volt at the grove connector. Or the unit side?

Project target: a simple page turner that can work with sheet music apps like PiaScore and mor on an iPad mini 2.

Why: my sister in law was searching for a simple pag turner with the options to see for more features for the band. By connecting more page turners in groups.(not yet implemented)

Requirements:

• needs to work with ipad mini 2
• needs to be wireless
• needs to work on a battery charge for 1 hour at least (Test run for 1 hour and 15 min)
• about 200 page turns (800 tested)

Things used:
M5stack Atom Lite
M5stack tailbat
2 footswitches
Small piece of pcb
Headers
And 2 small cables with connectors
And a 3d printed case.

I’m writing the steps from the download the setup of the software (on windows) coming soon!!

Result:

I did not use the 2 button option via the groove connector.
Because of the voltage split. It will consume a small bit of current. But everything i could save is for the battery livespan.
So the esp is running at 160Mhz and not 240. I tried 80, but the consummed current was below the 50mA and the tailbat will turn off after 30 sec.

This was the initial pcb for testing.

But because i only need 3 pins i made a new one. ( post will be updated later)

I did some investigation.
If the Atom Lite or Atom is downclocked to 80MHz the tailbat will turn off because of the to low power consumption .
If I change it to 160MHz, it will stay on.

So how can i alter the tailbat to support the Atom with low power consumption?

I've a Atom Lite and the TailBat.
I'm programming the Atom Lite with arduino ide.
the only function (in my code) that I'm using is Bluetooth HID.
after about 35 seconds the tailbat is shutting off. because the current consumption is not high enough.

If I use more features the tailbat stays on.

what can I do the keep the tailbat powering the atom lite?

@kees i did not invent it myself... i did find the sugestion for it on the website bleow. It is tip 4.

https://www.savjee.be/2019/12/esp32-tips-to-increase-battery-life/

And now is it time to reset your password on the community site

I want to thank @m5stack for tacking action. To setup https on the community site.

@crami25 i have 2 of them.
Downside is that they need to be removed for charging. Second is, by bypassing the voltage regulator, you will nat be able to use the voltage. So an wxternal battery status indicator is required.

@crami25 thanks for the advice. I've used branded and unbranded powerbanks. The modern powerbanks require a minimum current consumption. the older don't.

@Kees I've build a page turner based on BLE. This is for an iPad Mini 2 sheetmusic. so about 4 pushes per minute. with the LCD on.
In the code I use the front button to set the brightness. (but still on) I also use the screen as battery indicator.
I'm also running on 2 cores. I'm still figuring out how to get some parts to run on one core and the other part on the second core.

the other thing I've done is to change the corespeed. to 80Mhz. instead of the 260.