<![CDATA[RoverC and JoyC]]>Hi,
I just received, RoverC and its joystick JoyC.
I used the two EasyLoader to upload code in them, it worked well and Rover is fun too use.

First question : How to charge the Li-ion 16340 Battery ?
Is it possible to charge it on Rover or Joystick directly or we must remove it before charge it on external charger ?
Battery seems not easy to remove from Rover, i didn't find already how to do it.

]]>https://community.m5stack.com/topic/1538/roverc-and-joycRSS for NodeFri, 13 Mar 2026 14:35:10 GMTWed, 11 Dec 2019 19:38:26 GMT60<![CDATA[Reply to RoverC and JoyC on Fri, 04 Sep 2020 05:28:26 GMT]]>I have a few related questions. All are related to charging the M5StickC, JoyC and RoverC and their drain during use. Given that RoverC and JoyC need an M5Stick to be connected to be charged and all have the devices have batteries in them and the batteries in each set (M5StickC paired with either JoyC or RoverC) differ in capacity. How Do We know:

  1. State of Charge of the batteries in either set?
  2. When To disconnect the charger? (batteries fully charged) and
  3. Which of the two batteries in each set is being drained during use( M5Stick's or Hat's)?
]]>https://community.m5stack.com/post/9937https://community.m5stack.com/post/9937Fri, 04 Sep 2020 05:28:26 GMT<![CDATA[Reply to RoverC and JoyC on Sat, 18 Jul 2020 01:18:56 GMT]]>@jessevl its no different than plugging in the USB cable to charge the stickC. there should not be any concern.

]]>https://community.m5stack.com/post/9366https://community.m5stack.com/post/9366Sat, 18 Jul 2020 01:18:56 GMT<![CDATA[Reply to RoverC and JoyC on Wed, 08 Jul 2020 04:05:00 GMT]]>@elliot Thank you! This is exactly what I needed.

I'm just baffled that the product isn't properly documented. How is anyone supposed to figure all that out???

]]>https://community.m5stack.com/post/9263https://community.m5stack.com/post/9263Wed, 08 Jul 2020 04:05:00 GMT<![CDATA[Reply to RoverC and JoyC on Sat, 11 Jan 2020 18:12:18 GMT]]>I've got a related question to the RoverC and JoyC and charging the built-in batteries.

Am I correct in assuming the external cells are connected in parallel with the internal cells in the M5StickC?

Would that not create an unsafe situation when one of the cells is charged fully while the other is depleted and then connected together? The two cells would then balance at a very high current that may be too high (especially for the small 80mah internal cell)?

Asking this because the charging circuit documentation is still not released, and for all I know the AXP supports only a single cell so they must be connected in parallel somehow.

Also, another concern I have is that the code of the RoverC instructs the AXP192 to up the charging current to 600ma, but it seems like it will also do this when it isn't connected to the RoverC at all, which means the internal cell would be charged way too quickly.

]]>https://community.m5stack.com/post/6986https://community.m5stack.com/post/6986Sat, 11 Jan 2020 18:12:18 GMT<![CDATA[Reply to RoverC and JoyC on Fri, 03 Jan 2020 06:55:12 GMT]]>@ firehopper,
The button you have to press on M5Stick C is this one, see picture !
0_1578034458471_DSC_1259.JPG

]]>https://community.m5stack.com/post/6863https://community.m5stack.com/post/6863Fri, 03 Jan 2020 06:55:12 GMT<![CDATA[Reply to RoverC and JoyC on Fri, 03 Jan 2020 06:39:48 GMT]]>@ Pictavius
For charging Rover C as well as Joy C the M5StickC must be installed. Then the switches on Rover C and Joy C are switched on. Then connect the USB cable to the M5StickC and start the charging process!
At Rover C you can see the charging current and voltage on the screen of the M5StickC.
On Joy C this display is unfortunately missing, but through my USB charge controller I can also see when Joy C is full.
Here is a picture with charge control on the USB port.
0_1578032951143_DSC_1258.JPG

0_1578032966833_DSC_1257.JPG

]]>https://community.m5stack.com/post/6861https://community.m5stack.com/post/6861Fri, 03 Jan 2020 06:39:48 GMT<![CDATA[Reply to RoverC and JoyC on Thu, 02 Jan 2020 19:21:34 GMT]]>@pictavius I don't have the Joyc only the joystick hat.
Code to communicate and control RoverC with UIFlow is comming

]]>https://community.m5stack.com/post/6854https://community.m5stack.com/post/6854Thu, 02 Jan 2020 19:21:34 GMT<![CDATA[Reply to RoverC and JoyC on Thu, 02 Jan 2020 16:27:19 GMT]]>Can anyone share UIFlow program who makes JoyC communicate with RoverC ?
I would be very gratefull.

]]>https://community.m5stack.com/post/6852https://community.m5stack.com/post/6852Thu, 02 Jan 2020 16:27:19 GMT<![CDATA[Reply to RoverC and JoyC on Sun, 22 Dec 2019 21:21:39 GMT]]>@mati I wrote a short article and created a youtube vid on how to make them talk to each other. https://www.inventar.tech/post/m5stack-roverc-joyc for write up, and youtube vid is here: https://youtu.be/wsCLPWs5CUs

]]>https://community.m5stack.com/post/6763https://community.m5stack.com/post/6763Sun, 22 Dec 2019 21:21:39 GMT<![CDATA[Reply to RoverC and JoyC on Wed, 18 Dec 2019 01:25:39 GMT]]>@pictavius The following operations can restore the device to normal: 1. Short the BAT to GND. 2. Insert the USB cable. 3. After the screen is lit, stop shorting and USB continues to charge the device.

]]>https://community.m5stack.com/post/6733https://community.m5stack.com/post/6733Wed, 18 Dec 2019 01:25:39 GMT<![CDATA[Reply to RoverC and JoyC on Tue, 17 Dec 2019 17:38:07 GMT]]>@pictavius

@firehopper said in RoverC and JoyC:

I just go my rover c and joyc .. loaded the firmware on each one, but Cant figure out how to get the 2 to talk to each other
says hold a5, which button is that? please help

hmm i am charging my right now so lets see whats happend ...

]]>https://community.m5stack.com/post/6728https://community.m5stack.com/post/6728Tue, 17 Dec 2019 17:38:07 GMT<![CDATA[Reply to RoverC and JoyC on Tue, 17 Dec 2019 16:42:07 GMT]]>@lukasmaximus
While charging thru the M5StickC, M5StickC must be switched on or switched off ?

I killed my M5stick while charging the JoyC, now it doesn't want to switch on, nothing on screen, can't be connected to PC. And it becomes very very hot if i try to charge it even alone (not connected to JoyC). I just order an other one to try again.

]]>https://community.m5stack.com/post/6726https://community.m5stack.com/post/6726Tue, 17 Dec 2019 16:42:07 GMT<![CDATA[Reply to RoverC and JoyC on Sun, 15 Dec 2019 09:38:48 GMT]]>@firehopper never mind, had wrong joyc firmware loaded.. all good now.

]]>https://community.m5stack.com/post/6708https://community.m5stack.com/post/6708Sun, 15 Dec 2019 09:38:48 GMT<![CDATA[Reply to RoverC and JoyC on Sat, 14 Dec 2019 22:00:07 GMT]]>I just go my rover c and joyc .. loaded the firmware on each one, but Cant figure out how to get the 2 to talk to each other
says hold a5, which button is that? please help

]]>https://community.m5stack.com/post/6706https://community.m5stack.com/post/6706Sat, 14 Dec 2019 22:00:07 GMT<![CDATA[Reply to RoverC and JoyC on Thu, 12 Dec 2019 14:29:50 GMT]]>Do not try to remove the battery from the RoverC, it is welded in place. According to the documentation the 16340 battery should charge from the stickC usb when the stick C is attached to the roverC or joyC

]]>https://community.m5stack.com/post/6671https://community.m5stack.com/post/6671Thu, 12 Dec 2019 14:29:50 GMT