@2-4-6-h8 I am experiencing the same issue. I've registered on this site (obviously) and confirmed my email address. The Android app just spins when I try to register on it. I attempted update the StackChan's firmware but when I connected to my Wifi, it restarted on its own. Now when I click on the "Change Wi-Fi" section under setup, it shows me the QR screen to download the app, then just shows me the StackChan ID. I It seems no one is monitoring these forum posts, as a lot of threads are going unanswered. I hope this can be resolved because this is been a frustrating and disappointing experince thus far.

I'm back in now too hurray!

@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.

Intermittent SSL failures on M5Stack are often due to missing or outdated root CA and limited heap during handshake. Did you try pinning the server certificate or loading only the required CA bundle and checking free heap before the request, and handling token refresh server side instead of on device?

@y-shibata-aqua-k I was able to resolve this issue by updating the M5GFX library in the Arduino IDE to the latest develop branch version. Therefore, I will close this issue.

I’ve gone back and forth on this a lot. For me, YouTube is great when I’m just trying to get a quick feel for how something works—like seeing a UIFlow block setup in action or how someone wires a sensor. It helps things “click” faster compared to reading docs alone. But yeah, I’ve run into the same issue you mentioned—some videos skip key steps or assume you already know part of the setup. That’s where things break, especially with M5Stack since small details (like firmware version or library differences) can mess everything up. What’s worked best for me is using videos as a starting point, then keeping the official docs and forum open alongside. Most of the time, if something doesn’t work exactly like in the video, the answer is usually buried in documentation or a forum thread. I did follow a YouTube project once for a simple ESP32 sensor dashboard. It mostly worked, but I still had to tweak pin configs and update a library to get it running properly. So yeah—not really “copy and paste,” more like guided trial and error. If you find a creator who explains why they’re doing something instead of just showing steps, those are worth sticking with. Otherwise, I treat videos more like demos and rely on docs/forums for the real detail.

@marryjoseph22 Starting with UIFlow is a good choice but there are issues: If you need something that is not included in UIFlow then you will stuck or need a complicated workaround If the UIFlow Website is down you cannot work with As it is a interpreter language (micropyhton in the background) don't expect too much calculation speed! complex programs can become confusing There are also benefits: very easy for a quick and (not so) dirty proof-of-concept easy to understand for beginners One of my first programs was a TVOC logger with a remote display: [image: 1775109535930-f42e20c4-aedb-4b18-841a-f71e00db55cc-grafik.png] [image: 1775109580464-13e4a84b-25d1-47eb-ac8d-f8583d71d161-grafik.png] Data transfer from the stick to paper by ESPnow. It took me around 20min per device to program where the most time wasted to design the screens and understand how ESPnow works. Another funny project was two sticks who send each other a simple message of a counter value by ESPnow showing the value on display, play a beep sound, increment the value by 1 and send it back. The other beeps as well, increment and send it back and so on... this was to test how fast it can run and how far the wireless ESPnow connection work. For more complex programs I prefer the Arduino environment. it runs ON MY OWN computer so i am not dependent on the UIFlow cloud systems and website more complex programs possible without loosing overview many Arduino libraries running out of the box much faster program execution / calculations than on micopython / UIFLow the web is full of examples need a bit more programming skills but still possible for beginners

Besides the WiFi web terminal option, you could also check if your firmware supports USB serial so you can interact with it via a terminal on your laptop. That’s usually more reliable and doesn’t depend on specific firmware features.

@harrietteytlxv222 did you read my post from Feb 12 (follow the link)? Do you use the appropriate emissivity value for your surface?