Volos Projects
Volos Projects
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SquareLine Studio AND ESP32 - Tutorial Part 1
In this video I will show You how to make a simple UI in Squareline Studio (1.4.1) and I will show You how to upload it to ESP32 board. For this series of tutorials you can use T-Display s3 touch amoled or Lilygo t4.
LINKS:
SLS: squareline.io/LilyGO T-Display AMOLED Touch : www.lilygo.cc/O9VrA9
T-display AMOLED Touch with black shell: www.lilygo.cc/uHFC4r
T4 S3 with Blach Shell: www.lilygo.cc/IHx50O
code: (myFirstSLS) :github.com/VolosR/fisrtSLS
Support me on:KO-FI ko-fi.com/volosprojectsPATREON: www.patreon.com/VolosProjects
Don't forget to subscribe, like, and hit the notification bell for more IoT and ESP32 tutorials!#esp32 #sqareline
zhlédnutí: 10 356

Video

LilyGO Sent Me a Mysterious Package - New Boards by LilyGO
zhlédnutí 17KPřed 21 hodinou
LilyGO has new and interesting products. They sent me a few of their new ESP32 boards. The new line of products is well protected and looks great. Links: ESP32 Java Script Serial Flasher: espressif.github.io/esptool-js/ Firmvare for Internet Clock: github.com/VolosR/T4Clock NickTheFix Code for Encoder Pro: github.com/nikthefix/Lilygo_Support_T_Encoder_Pro_Smart_Watch Boards in video: T-display ...
Control Your PC Volume with ESP32-S3 and Makerfabs MaTouch Display
zhlédnutí 19KPřed 14 dny
Did you know that the ESP32-S3 can be used as a HID (Human Interface Device)? Basically, you can program it to act as a keyboard or mouse. I am using this feature in this project. This is the Makerfabs MaTouch 1.28' rotary display, and I am using it to control the volume on my PC. BOARD: www.makerfabs.com/matouch-esp32-s3-rotaryips-display1-28-gc9a01.html CODE: github.com/VolosR/VolumeKnob ☕️ S...
Yes, I Changed My Mind: Using SquareLine Studio and LVGL Now!
zhlédnutí 20KPřed 14 dny
Yes, for many years I refused to use LVGL and SquareLine Studio, but now I have finally learned how to use them, and I like them very much. I am planning to make a series of tutorials about them because it seems this topic is interesting to many people. My oldest sponsor, PCBWay www.pcbway.com/, will have a birthday soon. We have collaborated for more than four years, and I am always satisfied ...
FINALLY! Fast e-Paper Display -INKPLATE 6 Motion
zhlédnutí 43KPřed 28 dny
I waited for this for so long. This is a fast (11 FPS) e-paper display which can be programmed in Arduino IDE. This is the Inkplate 6 Motion, and it is currently in the crowdfunding phase. www.crowdsupply.com/soldered/inkplate-6-motion it is made by SOLDERED! You can check whole INKPLATE series here: soldered.com/ My last video with INKPLATE: czcams.com/video/1rAcVGgkSHc/video.htmlsi=iNNyQK_wQ9...
3 Minute Code with Volos : How to Set Display Brightness
zhlédnutí 3,8KPřed měsícem
Welcome to the fifth episode of Programming with Volos. In this series, I aim to teach you a few tricks and help you get started with programming ESP32 development boards more easily. Today, we will talk about screen brightness. Adjusting the screen brightness is important because these screens are often too bright and it's frequently necessary to reduce the brightness. Manufacturers have two a...
Creality Falcon2 PRO Laser Engraver: Let's Make an Enclosure for ESP32 Projects
zhlédnutí 2,7KPřed měsícem
I have a new LAser engraver. This one can be used indoors because of the built in air purification system. With lots of safety features this device is a great option when you have kids. I decided to use this Creality Falcon2 Pro to make some toys for my daughter. Find the laser engraver here: s.zbanx.com/r/0mziLY1xqYxY Code: FNPALL10 DTC link: store.creality.com/products/f... Code (22W): FALP22...
ESP32 - Minimalistic Messenger
zhlédnutí 9KPřed měsícem
Hello guys, in this video we will use two-way ESP-NOW communication. I made these simple devices which can send short text messages to each other using the ESP-NOW protocol. The brain of the operation is the M5Stack Atom S3 development board. I needed a few additional push buttons for this task, so I designed a custom PCB. The PCB is made by PCBWay. They have been a long-time supporter in my CZ...
3 Minute Code with Volos : ESP32 RTC , Simple Internet Clock (ep4)
zhlédnutí 7KPřed měsícem
In this video, we will talk about the built-in RTC chip that is included in every ESP32 microcontroller. This RTC is easy to use but it's not the most accurate clock in the world. After a few days, the time on this built-in RTC noticeably lags behind. I have used this method many times, but I have never explained it properly. So, the method we use is to connect our ESP32 to the internet every f...
ESP32 Smart Home UI -M5Dial
zhlédnutí 27KPřed měsícem
Hello! I haven't posted a video for two weeks, sorry about that. I've had a lot of household chores, a couple of paid projects, and the news is that I've decided to learn how to use the lvgl library. I also have a couple of new ESP32 development boards. In this video, I'll show you what I'm working on and share a few important channel updates. Enjoy! 🔗Links: 🔧Parts: M5Stack M5Dial : shop.m5stac...
Mini E-Paper : Unbelievable Battery Life
zhlédnutí 7KPřed 2 měsíci
You don't see this very often on this channel: an E Ink or e-Paper display. It's the smallest I could find. If you remember in the past, I used some bigger E Ink displays like the Lilygo T5, M5Stack Epaper, a soldered 6" display, and a soldered 10". E Ink displays are usually bigger, and the reason why I don't use them more often is that they are slower than LCD or AMOLED displays. But they hav...
Let's Make a Mini Digital Photo Frame: How to Display JPG Files from an SD Card
zhlédnutí 7KPřed 2 měsíci
Learn how to create your own mini digital photo frame using the ESP32 microcontroller (LilyGo T4). In this tutorial, we'll guide you through setting up and coding your ESP32 with a built-in display and SD card reader. By the end, you'll have a stylish frame to showcase your favorite JPG images. Let's get started! 🔗Links: 🔧Parts: T-Display T4 : www.lilygo.cc/products/t4-s3?bg_ref=7LJo9u5wwo 🛠️CO...
Monitoring House Power Consumption with ESP32 and Shelly Power Meter
zhlédnutí 87KPřed 2 měsíci
Welcome to our latest video where we delve into the world of smart home energy management! In this video, i will showcase how to monitor the total power consumption of your entire household using the ESP32 microcontroller and the Shelly Power Meter. By integrating these two powerful devices, you'll gain real-time insights into your home's electricity usage, allowing you to optimize energy effic...
3 Minute Code with Volos : TABLE (ep3)
zhlédnutí 4,2KPřed 2 měsíci
Welcome to my new programming tutorial series, '3 Minute Code with Volos'. In this episode, we will learn how to draw simple table. We will use two dimensional array and basic shapes to draw this table. 🛠️HERE is code: github.com/VolosR/TableTut Board used in tutorial! LilyGo T-Display S3: www.lilygo.cc/0cAg0r ☕️ Support me on: KO-FI ko-fi.com/volosprojects PATREON: www.patreon.com/VolosProject...
3 Minute Code with Volos : Progress BAR (ep2)
zhlédnutí 7KPřed 2 měsíci
Welcome to my new programming tutorial series, '3 Minute Code with Volos'. In this episode, we will learn how to use the drawWedgeLine function to create a progress bar, which can be used not only to display progress, but also various data such as speed or RPM. 🛠️HERE is code: github.com/VolosR/PbarrTut Color Picker: barth-dev.de/online/rgb565-color-picker/ Board used in tutorial! LilyGo T-Disp...
3 Minute Code with Volos :Episode 1
zhlédnutí 7KPřed 2 měsíci
3 Minute Code with Volos :Episode 1
Remote Voltage Monitoring System Using ESP32 and ESP-NOW
zhlédnutí 13KPřed 2 měsíci
Remote Voltage Monitoring System Using ESP32 and ESP-NOW
Gradient Sliders for T-Display S3 AMOLED Series (ESP32)
zhlédnutí 10KPřed 3 měsíci
Gradient Sliders for T-Display S3 AMOLED Series (ESP32)
Best ESP32 board with AMOLED display - LilyGo T4 S3
zhlédnutí 224KPřed 3 měsíci
Best ESP32 board with AMOLED display - LilyGo T4 S3
Install firmware from an SD card on M5Cardputer, plus a free mini car dashboard example.
zhlédnutí 14KPřed 4 měsíci
Install firmware from an SD card on M5Cardputer, plus a free mini car dashboard example.
M5StickC Plus2 is Evil Flipper Zero Cousin
zhlédnutí 42KPřed 4 měsíci
M5StickC Plus2 is Evil Flipper Zero Cousin
I made Attitude Indicator for ESP32 board
zhlédnutí 25KPřed 4 měsíci
I made Attitude Indicator for ESP32 board
ESP32 Image Puzzle Game with SD Card Storage!
zhlédnutí 4,3KPřed 4 měsíci
ESP32 Image Puzzle Game with SD Card Storage!
ESP-NOW Protocol: Establishing Communication Between Two ESP32 Devices - How to Use It
zhlédnutí 42KPřed 5 měsíci
ESP-NOW Protocol: Establishing Communication Between Two ESP32 Devices - How to Use It
ESP32 gets data from Xiaomi Thermometers using BLE
zhlédnutí 12KPřed 5 měsíci
ESP32 gets data from Xiaomi Thermometers using BLE
Thumb-Size Computer : NEW M5Stick C Plus2
zhlédnutí 30KPřed 5 měsíci
Thumb-Size Computer : NEW M5Stick C Plus2
Let's make Number Dial (Programming Tutorial)
zhlédnutí 9KPřed 5 měsíci
Let's make Number Dial (Programming Tutorial)
Enhance Your ESP32 Project: A Stand for Elegance and Professionalism
zhlédnutí 12KPřed 5 měsíci
Enhance Your ESP32 Project: A Stand for Elegance and Professionalism
T-Display AMOLED Touch ESP32 (Number converter Project)
zhlédnutí 75KPřed 6 měsíci
T-Display AMOLED Touch ESP32 (Number converter Project)
T-display S3 LONG - Elegant Development board from LilyGO
zhlédnutí 34KPřed 6 měsíci
T-display S3 LONG - Elegant Development board from LilyGO

Komentáře

  • @alvarosantosjunior2239
    @alvarosantosjunior2239 Před 12 hodinami

    hello friend, I updated the libraries of the "ESP32 S3 DEV MODULE" and the ESP stopped working, have you ever had this kind of problem?

  • @Tony770jr
    @Tony770jr Před 14 hodinami

    Very nice for Part 1. Looking forward to next. Thanks so much!

  • @hansvink9178
    @hansvink9178 Před 16 hodinami

    Thanks for this clear explanation!

  • @encostablanca
    @encostablanca Před 17 hodinami

    Great Volos, ruler of the Galaxy

  • @caravancrush1910
    @caravancrush1910 Před 18 hodinami

    clean your bedroom...🙂

  • @2flying4fun
    @2flying4fun Před 19 hodinami

    Hi, Love your vlogs. This one gives me a compilation error though/ ********************************************************** In file included from F:\Programming\Arduino\TTGO\TTGOAlienAttack-main\TTGOAlienAttack\TTGOAlienAttack.ino:5: F:\Programming\Arduino\TTGO\TTGOAlienAttack-main\TTGOAlienAttack\enemy.h:1:1: error: 'int' does not name a type 1 | int frames=4; | ^~~~~~ F:\Programming\Arduino\TTGO\TTGOAlienAttack-main\TTGOAlienAttack\TTGOAlienAttack.ino: In function 'void setup()': F:\Programming\Arduino\TTGO\TTGOAlienAttack-main\TTGOAlienAttack\TTGOAlienAttack.ino:58:3: error: 'ledcSetup' was not declared in this scope 58 | ledcSetup(pwmLedChannelTFT, pwmFreq, pwmResolution); | ^~~~~~~~~ F:\Programming\Arduino\TTGO\TTGOAlienAttack-main\TTGOAlienAttack\TTGOAlienAttack.ino:59:3: error: 'ledcAttachPin' was not declared in this scope; did you mean 'ledcAttach'? 59 | ledcAttachPin(TFT_BL, pwmLedChannelTFT); | ^~~~~~~~~~~~~ | ledcAttach ************************************************** Hopefully you can spot what I need to do to fix this. I can't. It actually already went pearshaped with the TFT_Print_Test example: ************************************************** In file included from c:\Users\Frank\Documents\Arduino\libraries\TFT_eSPI-master\TFT_eSPI.cpp:24: c:\Users\Frank\Documents\Arduino\libraries\TFT_eSPI-master\Processors/TFT_eSPI_ESP32.c: In member function 'void TFT_eSPI::begin_SDA_Read()': c:\Users\Frank\Documents\Arduino\libraries\TFT_eSPI-master\Processors/TFT_eSPI_ESP32.c:72:3: error: 'gpio_set_direction' was not declared in this scope 72 | gpio_set_direction((gpio_num_t)TFT_MOSI, GPIO_MODE_INPUT); | ^~~~~~~~~~~~~~~~~~ c:\Users\Frank\Documents\Arduino\libraries\TFT_eSPI-master\Processors/TFT_eSPI_ESP32.c: In member function 'void TFT_eSPI::end_SDA_Read()': c:\Users\Frank\Documents\Arduino\libraries\TFT_eSPI-master\Processors/TFT_eSPI_ESP32.c:87:3: error: 'gpio_set_direction' was not declared in this scope 87 | gpio_set_direction((gpio_num_t)TFT_MOSI, GPIO_MODE_OUTPUT); | ^~~~~~~~~~~~~~~~~~ **************************************************** I've been banging my head trying to get this to work. The sketches that do compile and upload leave the screen bla(n)(c)k. The rest all fail to compile. Getting desprate here, and totally frustrated. Thanks in advance.

  • @Zortan12
    @Zortan12 Před 21 hodinou

    Love your videos

  • @jaymedavis7567
    @jaymedavis7567 Před 22 hodinami

    Imo, everyone shoule be moving on to platformio and using something like vscode. Fwiw

  • @davidtivadze6708
    @davidtivadze6708 Před dnem

    Why is everything so messed up, installing/uninstaling strictly defined versions of libraries, some not adequate tricks.... and tips. Why can’t they ( I mean Squareline Studio) create a development environment like, say, this is done in Microsoft Visual Studio, where everything is simple and clear: like threw a control (widget) on the form, gave it particular processing and that’s it. In general, I really wanted to start using this library, but I probably won’t. Hate to do something, which have no clear explanation WHY, when the only "logical"answer to the question WHY is BECAUSE .

    • @VolosProjects
      @VolosProjects Před dnem

      becouse, this is universal tool, there is hundreds diferent board, that are using difernent pins, displays, drivers, pins configuration. Yes I agree programing this is not easy. But belive me is not that bad, did you ever try program phone app in Android Studio... thats mess

    • @davidtivadze6708
      @davidtivadze6708 Před 23 hodinami

      @@VolosProjects yes, I agree, that this is universal tool. But look at the library TFT_eSPI. This library was written also for hundred different displays. However, you take configuration file, simply edit, unremark your particular driver in huge list of drivers, change, if nessesary several pin addresses, resolution and finita, you done ! No mistic, no fiction , no magic wang. Just imagine, I follow your explanations, which are completely limited to one particular board. OK, I can follow it. But what if I have for example TFT display with driver ST7796 or any other driver which is compatible with SquareLine? Half of the information, in this case, is absolutely worthless because nobody knows how to wave this magic wand in this case.

  • @GAMTIFY
    @GAMTIFY Před dnem

    You should fix your electronic playlist. There is a dump video that not from your channel in it.

  • @adrianocamargo3193

    Great video, thanks! What I still missing is a project to make the M5 Cardputer interface with some LoRa board 😃

  • @kennethbeal
    @kennethbeal Před dnem

    What synchronicity! Just a couple days ago I had a board I couldn't talk to, and I went through the exact same steps! Find its data sheet at GitHub, and select the proper drop-downs, and it could talk. So neat. Thank you!

  • @austennaeve
    @austennaeve Před dnem

    Would you be willing to do an example on the lilygo t3 long?

  • @0miker0
    @0miker0 Před dnem

    Great video getting things set up. It is a lot of work and a bit of a learning curve but only has to be done the one time and is worth it. Coding multiple pages by hand before Squareline was very difficult.

  • @lainol_4066
    @lainol_4066 Před dnem

    Esp32S3 + SLS + Home Assistant tutorial = WIN for dedicated little wall panels all over the house.

    • @mmkf
      @mmkf Před 19 hodinami

      That would be very cool

  • @wildekek
    @wildekek Před dnem

    Thanks for this, super helpful! I would love to see (some) of this gui functionality merged with ESPHome.

  • @eduardofelippone4582

    Thank you, nice start for this series of tutorials. I'll try to find the time to start working on my Lilygo boards now that the Winter has started on this side of the planet. Great work !!!!

  • @T3chDad
    @T3chDad Před dnem

    Great video. I'm happy to support you in your quest....please remember us when you are King of the Universe.

    • @VolosProjects
      @VolosProjects Před dnem

      I will, you will seet on round table😀 thank you.

  • @Badge124
    @Badge124 Před dnem

    Sorry but taking over the galaxy isn't as easy as it sounds..

  • @landsurfmarin
    @landsurfmarin Před dnem

    Thank you so much for posting this! I watch all of your videos but the new ones with square line studio are the best and most helpful! Please keep it up!

  • @TechnicNerdAT
    @TechnicNerdAT Před dnem

    verry interesting! now my waveshare S3 1.69 shows me my squarline screen. thanks again

  • @alejandroperez5368

    Time to move on to EEZ Studio, an open-source alternative ! Squareline Studio and LVGL are no longer colaborating.

    • @daviddunn7817
      @daviddunn7817 Před dnem

      yeah this seems like a nice product but it's gotten way too expensive

    • @VolosProjects
      @VolosProjects Před dnem

      You dont need to buy it, after trial, there is personal licence which is free, and allow you 150 widgets per project, and that alot.

  • @AMPProf
    @AMPProf Před dnem

    CAN WE just say ut STAR TREK & STAR WARS

    • @RichardNobel
      @RichardNobel Před 22 hodinami

      Time for a *Star Wars* style, scrolling text animation on such an ESP32 display board? 😄

  • @melodicachan
    @melodicachan Před dnem

    Justo lo que estaba buscando!❤

  • @GF_Burke
    @GF_Burke Před dnem

    Nice man. Hey, I have the new T-display S3 Amoled. I can get one of your .img to work (the ones that are already compiled), but when I try any of the NerdMiners stuff for BTC miner, I just get a black screen. I've used those websites that do it for you, both of them, but same issue. Even choosing the correct images. Do you happen to have an .img for this Amoled for the latest herominer, that's already compiled and ready?

  • @andresceballos2709

    hello I downloaded the lvgl version 8.3.11 library on Arduino and compiled the example code that implements the library but it gives me an error C:\user\documents\arduino\libraries\lvgl\src\lv_conf_internal.h:41:18: fatal error: ../../lv_conf.h: No such file or directory 41 | #include "../../lv_conf.h" /*Else assume lv_conf.h is next to the lvgl folder*/ What can be?

    • @VolosProjects
      @VolosProjects Před dnem

      Did you install amoled series, are you using this board, this tutorial will work only if you use this board?

    • @andresceballos2709
      @andresceballos2709 Před dnem

      @@VolosProjects No, I want to use the wt32-sc01 plus board, along with tft_espi and square line

    • @VolosProjects
      @VolosProjects Před dnem

      @@andresceballos2709 sorry, this tutorial will not work for you.

    • @fireteamomega2343
      @fireteamomega2343 Před dnem

      Looks like the folder is not saved in the right place sometimes you download but the path called in an example isn't where it's supposed to be. I'd go through the path it suggests and look for that config file.

    • @andresceballos2709
      @andresceballos2709 Před 17 hodinami

      ​@@fireteamomega2343 thanks for you help

  • @cloudcitydigital
    @cloudcitydigital Před dnem

    Just discovering your channel, this is incredible! Going to start playing around with Squareline

  • @amsneo
    @amsneo Před dnem

    I love your videos and actually ended up using your guidance in many projects. Squareline studio is way too expensive can you do trials in EEZ studio they also have lvgl and it’s completely free

  • @MadeInJack
    @MadeInJack Před dnem

    What's your policy for ruling the galaxy?

    • @VolosProjects
      @VolosProjects Před dnem

      Not sure jet, but there willl be lots of cooding

    • @aviatorbja
      @aviatorbja Před 21 hodinou

      Everyone is allotted one 750 mL bottle of the best Croatian wine per week

    • @VolosProjects
      @VolosProjects Před 21 hodinou

      No, i will keep wine for myself 😀😀

  • @lordeross4870
    @lordeross4870 Před dnem

    Finally, i knew subbing was going to pay off lol, i have all the hardware just sitting here waiting haha

  • @dcmotive
    @dcmotive Před dnem

    Awesome job. Your well on your way to ruling the universe. I have had no luck getting Squareline code to work on my display esp32 setup. Challenge - If you can get this to work with code from Squareline Ill become a patreon, ESP32-S3-Touch-LCD-1.28. ha ha Ive tried lots of versions of the libraries but still no luck. Backlight on, but no other display life.

  • @rico5870
    @rico5870 Před dnem

    Awesome Video mate!! Thanks !

  • @SkyNavFern
    @SkyNavFern Před dnem

    Can’t even begin to thank you enough for this!! This information is REALLY appreciated sir

  • @ovalwingnut
    @ovalwingnut Před dnem

    You R the "LilyGO Whisperer"

  • @urvishnakum914
    @urvishnakum914 Před dnem

    Hi, is there any way to use in CoreS3 ?

  • @JeanPhilippeEncausse

    Thanks for your review, I don't understand how do you use the T-Glass. It didn't work for me (I put an issue on Github). By default, the display must be VERY far. If I reverse the prism the display is like a Google Glass but need to reverse the screen and the luminosity is very low. For me there is a strong design issue with the prism.

  • @joysart4u
    @joysart4u Před 2 dny

    Вы уже пробовали работу cardputer вместе с модулем lora от m5stack?

  • @davidtivadze6708
    @davidtivadze6708 Před 2 dny

    Lilygo has nice boards. But I really can not understand the purpose of this products. If You are commercial gadget hardware designer you will never use this boards, rather you will develop your particular diagram and hardware prototype model and will develop your gadget based on particular components, which you really need. Not everyone trust, for example, on ESP32 timing capabilities, and people use fpr example special chips for that, for example DS3231. How to use Lilygo "ready to go boards"in this case? Otherwise... to practice coding ESP32? Ok, may be. But why pay USD 60 (!) for that, if you can buy (or make yourself) other prototype boards for practice? And making the case for the prototype board is another crazy story.

  • @rogerthomas7040
    @rogerthomas7040 Před 2 dny

    Your English, is just fine. Us English will only ever have a right to comment once the majority of us have managed to learn a second language - it may be a while :)

  • @Lacmane1
    @Lacmane1 Před 2 dny

    Hi, can I add something to have voice control to this board. So beside using the touch screen, I would also want to have something to command via voice (so send command by talking into it)?

  • @wavescomplete5085
    @wavescomplete5085 Před 2 dny

    Why i follow this i just got failed many time.. But easy for me use mosfet/power transistor for variable voltage....I can close my eyes

  • @greglogan4443
    @greglogan4443 Před 2 dny

    Cheap Yellow Display please 😊😊😊

  • @mystamo
    @mystamo Před 2 dny

    yep.. They owe ya.. I own a few Lilly boards thanks to you. Unfortunately before you were an affiliate. Keep up the work you beast..

  • @gitgudchannel
    @gitgudchannel Před 2 dny

    Stvarno si majstor

  • @gerarldlee
    @gerarldlee Před 3 dny

    Love your videos and tutorials! Is there a way to debug the lilygo s3 amoled? Compared to other esp32s3 devkits which have 2 usb interface (1 usb, 1 com/uart), these have only 1 usb interface. Thanks!

  • @TekGeekDad
    @TekGeekDad Před 3 dny

    Looks great and will look into the squareline - would be great for the tutorials on the lilygo t-display amoled if possible. That would be my vote. thanks for all the great info.

  • @ivovass195
    @ivovass195 Před 3 dny

    Lylygo have improved plenty and added new options which is great to see

  • @hightech_lowlife
    @hightech_lowlife Před 3 dny

    bought this board and downloaded your code, but getting an error on upload... who wants to help a noob?

  • @Gertbfrobe407
    @Gertbfrobe407 Před 3 dny

    i hear your bike 🚲 is very neat 👌.... now i see 👀 it is true 👍 with your awesome tricks 😀

  • @AerialWaviator
    @AerialWaviator Před 3 dny

    Cool package and bike. Do like the bike speedometer project idea. It has my vote.