compiling error

[ggwarrier]

'SemaphoreHandle_t' does not name a type
I am new to this type of things. My poor eyesight also gets in the way.
So what does this mean?
mutex is seen many times but where is it defined?

[kachurovskiy]

Hi @ggwarrier, make sure to first select ESP32S3 Dev Module as your target platform at the top of the Arduino IDE.

Hope it helps.

[kachurovskiy]

So what does this mean?
mutex is seen many times but where is it defined?

Those are simply mutexes. You can read more about FreeRTOS logic used here at https://www.freertos.org/xSemaphoreCreateBinary.html

[ggwarrier]

Thank you, Sir. Meanwhile I came across another interesting article - https://www.youtube.com/watch?v=WyG4LOG8EfA. Have you seen this. I feel envy about Mr. TonyFoale- he looks to be about my age and seems to be able to do so many! regards, Gopal

…

On Tue, Jun 6, 2023 at 11:19 PM Maxim Kachurovskiy ***@***.***> wrote: So what does this mean? mutex is seen many times but where is it defined? Those are simply mutexes. You can read more about FreeRTOS logic used here at https://www.freertos.org/xSemaphoreCreateBinary.html — Reply to this email directly, view it on GitHub <#122 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQT4IEL2C2KN5NNHLEGWW3XKAMQBANCNFSM6AAAAAAY5HBUTY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kachurovskiy]

Yes, I think I've seen it before but took another look. That's a very nice build.

[ggwarrier]

What impressed me was his "reckless confidence of youth"! And the thread cutting on a taper.

[ggwarrier]

I was able to compile the h4 without errors Sketch uses 348461 bytes (26%) of program storage space. Maximum is 1310720 bytes. Global variables use 21708 bytes (6%) of dynamic memory, leaving 305972 bytes for local variables. Maximum is 327680 bytes. Thank you Maxim. Fantastic when you even included the images. Besides using ESP32S3 Dev module as the target I had to install the core32 library and PREFERENCES.h. Now I am waiting for your 4-axis version. Out of curiosity I wanted to play around and learn a little on my own and so ordered couple of ESP32S Dev mcu from Amazon. Again thanks a bunch, Maxon. regards, Gopal

…

On Wed, Jun 7, 2023 at 12:46 PM Maxim Kachurovskiy ***@***.***> wrote: Yes, I think I've seen it before but took another look. That's a very nice build. — Reply to this email directly, view it on GitHub <#122 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQT4IAMMGBGXPAZSXMTFYTXKDLALANCNFSM6AAAAAAY5HBUTY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[ggwarrier]

Hello Maxim, He uses a Mega for his UI and ESP32 for encoder counting. FYI he lives in Spain. Coming to my situation, I compiles the code succesfully but I was not sure the actual mcu that I should use. I tried ESP32 WROOM-32D but came up with the following message Wrote 363728 bytes (208361 compressed) at 0x00010000 in 3.1 seconds (effective 949.9 kbit/s)... Hash of data verified. Leaving... Hard resetting via RTS pin... Is this wrong? What is the actual MCU used in your design? Meanwhile I am waiting on my order A1025. Thank you Gopal

…

On Wed, Jun 7, 2023 at 12:46 PM Maxim Kachurovskiy ***@***.***> wrote: Yes, I think I've seen it before but took another look. That's a very nice build. — Reply to this email directly, view it on GitHub <#122 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQT4IAMMGBGXPAZSXMTFYTXKDLALANCNFSM6AAAAAAY5HBUTY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kachurovskiy]

Hi Gopal,

He uses a Mega for his UI and ESP32 for encoder counting.

Perhaps with older ESP32s it was harder to combine everything into one - or maybe there's some other reason.

Leaving...
Hard resetting via RTS pin...

This means that software is uploaded successfully and you just need to disconnect the USB and reconnect it back for the software to boot.

Cheers!

[ggwarrier]

Hi Maxim, It's past 10pm for you and you are so prompt in responding. Thank you. While I wait for the 4-axis box from you, I am going to make a prototype board and try your design - just out of curiosity. Wish me luck. regards, Gopal

…

On Fri, Jun 9, 2023 at 1:05 PM Maxim Kachurovskiy ***@***.***> wrote: Hi Gopal, He uses a Mega for his UI and ESP32 for encoder counting. Perhaps with older ESP32s it was harder to combine everything into one - or maybe there's some other reason. Leaving... Hard resetting via RTS pin... This means that software is uploaded successfully and you just need to disconnect the USB and reconnect it back for the software to boot. Cheers! — Reply to this email directly, view it on GitHub <#122 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQT4IGD762UZXQYWRGH753XKN6XLANCNFSM6AAAAAAY5HBUTY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kachurovskiy]

Gopal, good luck! Do you already have the encoder and motors attached to the lathe?

[ggwarrier]

Maxim, I have the encoder, ball screws and the stepper motors and servo motors in hand. Since I only have basic tools to work with mounting these on to my lathe is a challenge to me but I will get there. I fell ill recently (heart attack that required surgery) I am also physically handicapped for the time being. I noticed that you have modified your encoder mounting 3D parts. I have an old Ender 3 printer. Will you be willing to share the stl file for that? Again thank you. regards, Gopal

…

On Fri, Jun 9, 2023 at 1:25 PM Maxim Kachurovskiy ***@***.***> wrote: Gopal, good luck! Do you already have the encoder and motors attached to the lathe? — Reply to this email directly, view it on GitHub <#122 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQT4IHRPOTX5CMPPODTKQTXKOBDVANCNFSM6AAAAAAY5HBUTY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kachurovskiy]

Gopal, that's a warrior spirit 👍 You can find the motor mount info below:

• https://github.com/kachurovskiy/nanoels/blob/main/hardware.md
• https://www.thingiverse.com/thing:4714722/remixes (original + remixes by other people, belt connection is really preferable there)

[ggwarrier]

Hello Maxim,

My Lathe has the spindle gear too close to the bulk head that I am unable to use the gear mounting you suggested. I am trying to figure out a design on Tinker Cad to suit my lathe. Being half blind I have gone thru a few with too many measurement errors. I am using infill of 10% not to waste printer filamnet and time!
By the way I received your 4 axis control box and was able to connect the encoder and the stepper driver and the motor on my desk and was able to move the motor on both the axes. I connected the encoder (600ppr) to a small dc motor to turn it.
The big issue I now have is to amke any sense of all the modes you have on the box. I tried to learn some of it by watching your videos but must admit that I am totally lost.
Do you have by any chance a user manual for the 4 axis controller. Obviously I will only be using the Z and X axis for now. My aim is to use it to do profiling similar to https://www.youtube.com/watch?v=hyncFl1DY4Q
Thank you for all your help and putting up with these na·ive questions.
Gopal

[kachurovskiy]

Gopal, you can find the manual at https://github.com/kachurovskiy/nanoels/tree/main/h4

My aim is to use it to do profiling similar to https://www.youtube.com/watch?v=hyncFl1DY4Q

This will be easily possible with https://kachurovskiy.github.io/lathecode/ and it already works in experimental mode - though there are some problems I need to work out before declaring it ready for use (support stop during operation, fix a few bugs, etc.).