Nice board. Could you please explain a little bit the usage of SN74AHCT245N? you mentioned it is used to drive the LEDs. I found some datasheet but i'm not really sure why its needed for the leds. Thanks
Its for driving addressable LED strips (like WS2812B) They are not 3.3V logic, so a level translator is needed, the SN74AHCT245N converts 3.3V logic to 5V logic. In many design you will see different ways of doing it - this is just one way.
I greatly underestimated how difficult it is to apply solder paste by hand to each 0402 pad, I forsure will be getting the stencil next time. And just how hard it is to see what you're doing. All i have for now is a 16x loop from my grandfather, its just barely doable. Do you have a recommendation for a scope ?
I dont use a stencil, for 0402 parts i just apply solder to one PCB pad and thne place the part with a twezzer while heating up the solder with the soldering iron, this works for me. I got my scope from NorthridgeFix, you can see some of my other videos where try and work with it. There are many entry level microscopes out there - sorry i have no recommondations on these ones.
@@made.by.morten.laboratories Ill give that a try next run, I just found out i made a slight mistake when using your schematic as a reference. I double swapped RC and TX so its just RX to RX TX to TX. Its seen as a silicon labs uart bridge so im stoked about that. That was a hard part to get in just the right place. Edit. I did manage to get the mixed up traces resolved and its now accepting code :D Can't believe its working at all tbh, with only 4 weeks of learning and designing the whole thing, to this Feels good.
@@zviper Congratz on getting it up and running, that is really cool. RX and TX swapping has been a nightmare for me many times ..... You can place two 0R resistors in series with RX and TX, then place them next to each other on the PCB. In one posistion they go straight through and if you rotate the resistors 90 degrees you swap RX and TX
@@made.by.morten.laboratories I got it done with some strands of wire and the tongue at the correct angle. But now I found one more thing. My reset switch is connected to the wrong pin on the esp32. I knew it wouldn't be a home run and everything works. Still way too excited about this
"... programmed into the Arduino.." but is an ESP32, not an Arduino. Interesting though that you can run Arduino code on the ESP32. How does this work together with the ESP-IDF?
@@made.by.morten.laboratories I know it is not related, but can it work together? ESP-IDF is the standard environment for the ESP32, but it is not as accessible for hobbyists. For a project I need ESP-IDF, but at the same time I would like to "open up" the ESP module for customer code. Many people ask me "why not Arduino".
Nice project, I like the simple yet effective approach!
Thank you very much, I am very glad you like the content 😀
Thanks for sharing the code mate! This will be great for me as a building block to my own projects.
You are very welcome, i am happy that you find it useful 😀
Nice work, thank you for sharing
@iangrice5511 thank you, glad you liked it
nice Explanation Sir
Thank you, i am glad you like it 😀
Nice board. Could you please explain a little bit the usage of SN74AHCT245N? you mentioned it is used to drive the LEDs. I found some datasheet but i'm not really sure why its needed for the leds. Thanks
Its for driving addressable LED strips (like WS2812B) They are not 3.3V logic, so a level translator is needed, the SN74AHCT245N converts 3.3V logic to 5V logic. In many design you will see different ways of doing it - this is just one way.
@@made.by.morten.laboratories ah so its used as a logic level shifter. Got it. Thank you for the explanation :)
@@Mikomanus No problem 😀
Please make video for make polarized light for microscope . Thank you
Thank you for the comment, i will have a look on that 😀
@@made.by.morten.laboratories ok . Thank you
I greatly underestimated how difficult it is to apply solder paste by hand to each 0402 pad, I forsure will be getting the stencil next time. And just how hard it is to see what you're doing. All i have for now is a 16x loop from my grandfather, its just barely doable. Do you have a recommendation for a scope ?
I dont use a stencil, for 0402 parts i just apply solder to one PCB pad and thne place the part with a twezzer while heating up the solder with the soldering iron, this works for me. I got my scope from NorthridgeFix, you can see some of my other videos where try and work with it. There are many entry level microscopes out there - sorry i have no recommondations on these ones.
@@made.by.morten.laboratories Ill give that a try next run, I just found out i made a slight mistake when using your schematic as a reference. I double swapped RC and TX so its just RX to RX TX to TX. Its seen as a silicon labs uart bridge so im stoked about that. That was a hard part to get in just the right place.
Edit. I did manage to get the mixed up traces resolved and its now accepting code :D Can't believe its working at all tbh, with only 4 weeks of learning and designing the whole thing, to this Feels good.
@@zviper Congratz on getting it up and running, that is really cool. RX and TX swapping has been a nightmare for me many times ..... You can place two 0R resistors in series with RX and TX, then place them next to each other on the PCB. In one posistion they go straight through and if you rotate the resistors 90 degrees you swap RX and TX
@@made.by.morten.laboratories I got it done with some strands of wire and the tongue at the correct angle. But now I found one more thing. My reset switch is connected to the wrong pin on the esp32. I knew it wouldn't be a home run and everything works. Still way too excited about this
@@zviper There is always one more bug 🙂
"... programmed into the Arduino.." but is an ESP32, not an Arduino. Interesting though that you can run Arduino code on the ESP32. How does this work together with the ESP-IDF?
There is quite a few different processors and boards that are supported by the Arduino IDE. ESP-IDF is not related to Arduino.
@@made.by.morten.laboratories I know it is not related, but can it work together? ESP-IDF is the standard environment for the ESP32, but it is not as accessible for hobbyists. For a project I need ESP-IDF, but at the same time I would like to "open up" the ESP module for customer code. Many people ask me "why not Arduino".
@gideonz74b, sounds like a cool project. On the pro side we also use the ESP-IDF - i agree with you Arduino is most useful for fast prototyping