Arduino Uno R4 WiFi LESSON 10: Writing Analog Voltages With the Arduino

Pick your Sunfounder kit up so you get the same results I do:

You can pick up the neat jumper wires I showed in the video here:

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In this video I introduce you to the concept of analog voltages on the Arduino Uno R4 Serial Monitor. I show how to use the analogWrite command to simulate analog signals. Enjoy!

#arduinor4wifi
#analogwrite
#tutorial

[masmanst]

Was playing with RGB and forgot to put pinMode(bLedPin.OUTPUT); in setup. Blue LED still came on so I remove pinMode for both rLed and gLed and they still worked also. I guess with analog pins defined as variables above void setup I don't need to pinMode statements in void setup. Is there a reason I should do it for good coding practices?

[martindasilva]

Hello Paul, this is my third attempt at posting my homework assignment. I don't understand why it disappears

[SaiyanJin]

I noticed that the same happens even on non PWM pins, why is that??


Thanks

[Photoeye]

Thank you sir... Is there somewhere we can clip the code into my IDE?

[alfredcalleja]

Thanks Prof Paul. Another great tutorial. I enjoyed the Homework. It's amazing how much I've forgotten since your last Arduino course I did with you a few months back. This course is a really vital refresher and, like you, I keep getting my Python coding mixed up with the Arduino stuff. I'm enjoying redoing a lot of the things we did last time because I have forgotten so much, so I am pleasantly working my way back to a semblance of understanding of this "basic" stuff in readiness for the more advanced and new R4 WiFi tutorials. Is there any chance we can actually do some WiFi related tutorials, that would be really stunning?

[TheUnofficialMaker]

You should make a download PDF of each sketch to go with your videos, then we could build a Notebook of code when we need to refer back to something!

[larryb]

Sorry I missed last weeks class and the one this morning. I have been tied up with Doctor appointments.

[rickclever]

Don't drink coffee but I do have a nice tall glass of ice cold tea. Straight up, black tea, poured over ice. No sugar. No sweeteners. None needed.

[anagramfive]

Hi Paul! I have a question: What difference is between opening the bare minimum example sketch, and just open a new sketch?

[robertschuldenfrei]

Pardon the interruption. Is there any kind of community discussion channel to share comments about Arduino, the class, and learning in general? Something like discord would be great. Paul has a section called Community, but it has not been used in years.

I am asking the question here in lesson 10. The lessons are NOT the right place for general discussions and the Arduino forum is massive. For example, today I have been learning about Arduino memory mapping. For the Nano memory begins with 32 registers from location 0x0000 - 0x001F. Of importance to me for the Nano is that SRAM runs from 0x0100 - 0x08FF. None of this would be of importance to a beginner who is trying to get his head around int and float. But, it does interest me. Any ideas?

[larryplatzek]

Yes, this another Great introduction to analog write!

[alldaypancakes]

A bit of a weird question but can I use your Raspberry Pi Pico lessons with my esp32 I am no beginner I'm just asking is most of the programs compatible with the esp32? Love the lessons

[drdentin]

I watched Paul again. I was not a good listener. I only did the ramp up and missed the ramp down portion in the HW. My Mom saved a kindergarten assignment that had bold red letters "Did you listen to the assignment?" She saved it for years! Old habits persist.

[ethanaskew]

Is there a way to complete the homework assignment using just the elements that have been taught up to this point? I see a lot of completed homework assignments using commands like "constrain" and "for" which up to this point he has not covered.

[raz]

Hey paul thanks for the tutorials, could I ask what specifications does your computer have?

[jolenebett]

This one is a great class since it requires additional logic. I previously did some python classes and remembered the use of if statements. I don't yet know the code for arduino so I needed a little internet search help to figure it out. I appreciate the time you take to make these videos, teaching others is a gift you are giving to the world so one day we may return the favour.

[borufight]

Sir, can u upload video tutorial about emonLibCM?

[charlotteswift]

Here's the (6th) notification for my lesson 9 homework - no link, no description, nothing to make you know who delete it.

[robertschuldenfrei]

I ran into your livestream on DAC quite by accident on March 31, 2024. It ran live on the 15th. Where do you announce these supplemental lessons?

[charlotteswift]

Lesson 10 completed and video uploaded.