Not sure what Category this ought to be in, hopefully this is correct... I have the Arduino UNO board from the older smart Robot kit from Elegoo, V2.0, I think. (Same kit as in the forum linked below, maybe different version.) I am now trying to use this board and upload some script that partially …

If you have those motors only powered via the USB connection it won’t work , you need a separate supply capable of driving those pumps connected to your motor driver. There is nothing hard about drawing schematics by hand , a quick google will get you started . By having a schematic you can then do…

Yes, the blink sketch does work. I have had an extremely experienced Arduinoist check my sketch as well. There ought to be no errors, even if there are... "Compile" should catch them. I know that the device should physically do something anyway.

[image] sky777: blink sketch does work Doesn't that point to the board being ok and correctly selected etc in the ide? [image] sky777: I have had an extremely experienced Arduinoist check my sketch as well. Checked how, though? A walk through of the code? Those can help of course but …

[image] sky777: There ought to be no errors, even if there are... "Compile" should catch them. And of course compiling won't catch errors of logic :wink: edit... have you got a blinking led or serial prints in your code? At least something in setup() as a simple proof-of-life? I usually ha…

[image] sky777: . . . the motors do not run as they ought to. This is much more likely to be power issue. If you temporarily replace the motors with leds (and series resistor) do you see anything? Otherwise, show your code and a schematic.

[image] sky777: the motors do not run as they ought to That was a bit ambiguous to me... not sure if it means the motors aren't running at all, or if they're running but not correctly.

[image] sionaggutraidh: Maybe you should post the code and schematic, and someone can double check it I apologize, but I am inexperienced in schematics, and the program I use for creating them did not have the correct parts needed to create a schematic for this project. I am using the expansi…

I would be very inclined to put some serial prints in strategic parts of that sketch, like at the end of setup() to say setup's done, and in each of the turn functions to see if the code ever gets there.

[image] sionaggutraidh: put some serial prints in strategic parts of that sketch I will try that and let you know how it goes...

I used three times of printing to the serial monitor, one right before the loop, and two in the midst of the loop, all of which are correctly posted.

Which at least tells us the code is running, which we didn't actually know before... But that doesn't tell you the turn functions are being called when they should be, so I'd put prints in the functions too, to test your program flow. Also as 6v6gt suggested, replace the motors with leds to see if…

Arduino/Genuino UNO no Longer Available, yet Problems Ensue

Other Hardware Motors, Mechanics, Power and CNC

TomGeorge November 11, 2021, 9:32am 14

Hi @sky777
To add code please click this link;

Thanks... Tom...

Topic		Replies	Views
PROBLEM SOLVED - DEFECTIVE ARDURINO BOARD - I'm stumped. Can't upload any sketches to Uno or Mega, I could 9 years ago Uploading	23	522	May 7, 2026
Nochmal Erster Versuch gescheitert ! Deutsch	53	1001	March 3, 2025
Upload fails: "programmer is not responding" Uploading	17	358	August 6, 2026
Programmer is not responding Uploading	41	1019	June 7, 2026
UNO Q: What is wrong with my UNO Q board? UNO Q	27	1008	May 1, 2026

Arduino/Genuino UNO no Longer Available, yet Problems Ensue

Related topics