<![CDATA[Paper S3 epub reader with usb disk mode]]>6821a967-71f2-4ad7-a8a4-41bb1eb9d09d-image.png
Hello. I am working some time on this epub reader just for fun. But It would be nice to have some feedback and testing. If anyone with M5stack Paper S3 can test my reader app please use M5burner app and give me ideas, bug-reports, etc. here. Thanks a lot.
EDIT: for testing beta versions you can use this page (stable also included) : https://erbosoft.org/erbopubreader/ . WebFlasher available.

]]>https://community.m5stack.com/topic/8091/paper-s3-epub-reader-with-usb-disk-modeRSS for NodeWed, 29 Apr 2026 06:43:13 GMTWed, 18 Feb 2026 16:39:36 GMT60<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Sat, 25 Apr 2026 08:21:54 GMT]]>@L4700 Hi. Thx for testing. Frankly project happened just for me, because I have so many eReader but none was so light. Now I bought next Paper S3 device to my wife is my new tester :D. Future is unsure, for me - there's possibly all I need. And for others - there's slow feedback.
What I am thinking about :

  • HW improve - still trying to figure out some fancy Screen illumination fo this HW.
  • Wifi portal for transfering books - USB disk mode is very slow, and removing SD card is akward.
  • Sync readering with other readers (maybe Calibre, not sure now)
  • Optimization (MCU is slow, but I see still some potencial.
  • Secondly thinking about future porting to newer models - but it will need some donations to buy new HW. Until this time I have just one donate from my boss :D
    Sry for my English.
]]>https://community.m5stack.com/post/30909https://community.m5stack.com/post/30909Sat, 25 Apr 2026 08:21:54 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Wed, 22 Apr 2026 14:01:30 GMT]]>@erikbotta

Hi, my apologies for late reply, been a bit busy with irl work ;(

Just tested the beta, and the settings bug is no longer there.

Honestly the project is great, I wouldn't want to rush you on it as it's best to take your time and do it as you like it, people already love the first version as it's much better than anything out there, and most of the working epub readers on m5burner are Chinese only :(

If you need something tested or anything you can reach me via Telegram @L_470 or by email Danikrlop@gmail.com and I'll be happy to help out any way I can :)

Best of luck in your project and it's really an amazing project ^^

]]>https://community.m5stack.com/post/30898https://community.m5stack.com/post/30898Wed, 22 Apr 2026 14:01:30 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Sat, 18 Apr 2026 09:26:31 GMT]]>EDIT: It was quicker I though. Please test beta https://erbosoft.org/erbopubreader/ . Look to release notes. It is now implemented just from FS perspective (no UI for creating folders etc in reader fw). Bug should be also fixed.

@L4700 Hi, thank you for your feedback.
Folders - I will look at it, but I had zero time till now for this miniproject. But if I add it - there will be new beta version on erbosoft.org.
Second think is bug for sure. I had zero testers :( . But I will try to fix it and test all edge cases again.
I am still not satisfied with some slow caching operations (even when they are done once and mcu is slow) so maybe I will try to improve that too (caching of paging for different font sizes, pictures/no pictures etc.)

]]>https://community.m5stack.com/post/30892https://community.m5stack.com/post/30892Sat, 18 Apr 2026 09:26:31 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Wed, 15 Apr 2026 15:38:32 GMT]]>Good day, the app is great, a few things to add, would be in my opinion.

Folders for books, so in the main menu you can open the book collection folder, as some books have several tomes.

One more thing too, when you burn the firmware without having any books, the settings page is invisible, basically the swipe up doesn't show anything, unless a book is added in books folder.

But over all it is one of the best epub readers on the M5Paper S3. <3

]]>https://community.m5stack.com/post/30890https://community.m5stack.com/post/30890Wed, 15 Apr 2026 15:38:32 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Thu, 26 Feb 2026 22:23:45 GMT]]>@adiafora Not sure. Still hunting bugs by reading books, newspapers, etc.
One future function I would like to have for myself is some dailynews ticker via wifi. But still brainstorming with myself if it can be some easy way implemented. Maybe via rss.

]]>https://community.m5stack.com/post/30699https://community.m5stack.com/post/30699Thu, 26 Feb 2026 22:23:45 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Thu, 26 Feb 2026 21:42:30 GMT]]>@erikbotta LOL, probably this is the "user issue" on my side, I may or may not pick the wrong charger... Anyway you got any end goal in mind? At this point with working bookmarks and menus it's already fully functional app with enjoyable reading experience.

]]>https://community.m5stack.com/post/30698https://community.m5stack.com/post/30698Thu, 26 Feb 2026 21:42:30 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Thu, 26 Feb 2026 20:49:41 GMT]]>@adiafora Interesting I have to say even in Balanced mode I cannot see ghosting at inverted mode. But will try difference with/without charging. 5V charger is strictly required so maybe some quickcharger problem?
BTW there’s new beta version with some fixes. Probably will make it stable next week. I have 0 testers so it goes slowly.

]]>https://community.m5stack.com/post/30697https://community.m5stack.com/post/30697Thu, 26 Feb 2026 20:49:41 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Thu, 26 Feb 2026 18:23:22 GMT]]>For some reason I was using only "Fast", switching to "Quality", much better. But probably at least some of the ghosting issues came from "using while charging", now I noticed that there's the difference pluged in or not.

]]>https://community.m5stack.com/post/30695https://community.m5stack.com/post/30695Thu, 26 Feb 2026 18:23:22 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Thu, 26 Feb 2026 12:39:08 GMT]]>@adiafora Thx, I will look at that ghosting. Is it better for Quality display mode from in-book menu?

]]>https://community.m5stack.com/post/30694https://community.m5stack.com/post/30694Thu, 26 Feb 2026 12:39:08 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Wed, 25 Feb 2026 20:08:00 GMT]]>@erikbotta I need to read more but looks and works great. I see some additional ghosting/image retention but it's barely noticeable and corrects itself after few touches.

]]>https://community.m5stack.com/post/30693https://community.m5stack.com/post/30693Wed, 25 Feb 2026 20:08:00 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Wed, 25 Feb 2026 13:31:47 GMT]]>@adiafora I create some early version with dark mode. So if you can test it for me. Download and instructions here: https://erbosoft.org/erbopubreader/

]]>https://community.m5stack.com/post/30691https://community.m5stack.com/post/30691Wed, 25 Feb 2026 13:31:47 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Wed, 25 Feb 2026 12:27:31 GMT]]>@adiafora Thx for comment. I will try to look at it.

]]>https://community.m5stack.com/post/30690https://community.m5stack.com/post/30690Wed, 25 Feb 2026 12:27:31 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Tue, 24 Feb 2026 07:07:35 GMT]]>Easy to use and convenient, great as it is. One feature that could be added is dark mode/color reverse but if it would break app it's not worth the effort.

]]>https://community.m5stack.com/post/30679https://community.m5stack.com/post/30679Tue, 24 Feb 2026 07:07:35 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Sun, 22 Feb 2026 11:31:41 GMT]]>@dav1277 Thank you. Give me some bug reports or ideas anytime.

]]>https://community.m5stack.com/post/30670https://community.m5stack.com/post/30670Sun, 22 Feb 2026 11:31:41 GMT<![CDATA[Reply to Paper S3 epub reader with usb disk mode on Fri, 20 Feb 2026 22:05:36 GMT]]>Best one so far! Great job on this!

]]>https://community.m5stack.com/post/30669https://community.m5stack.com/post/30669Fri, 20 Feb 2026 22:05:36 GMT