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Has anyone used the L293D Motor Driver Shield & Arduino?

I am having issues loading the UNO with the firmware. Can anyone tell me what software I can load onto the UNO in order to operate the L293D? I tried to use the SelectorFirmwareMK4.ino.with_bootloader.hex but I continue to get and error. "Arduino can only open its own sketches and other files ending in .ino or .pde.".

30 comments

30 Comments

Jared Rementer

Apr 10

I also found this doc that helps explain the pin out. https://playwithcircuit.com/l293d-motor-driver-shield-arduino-tutorial/ So the question becomes are we programming the pins on the Arduino or the L293 Motor shield? And what are they looking for regarding the label of the pin. Found this code on another site. Looks like the L293 has a forward and backward pin out. Is that what chameleon has as well?

Edited

Jared Rementer

Apr 13

Replying to

I got it working in the sense that I got the motors moving but it is still the programming of the SelectorFirmwareMk4.ino that does not move the motors. So that would need to be adjusted to work with the L293 motor shield. I have been programming chips and working on projects like this for a long time. I ordered a CNC shield but it will not arrive for a bit.

Liam Pulido

Apr 13

Replying to

Whats confusing me is the fact that there isn't any lines that say "#define [name] [pin number]" in the test code. That's how you are supposed to set the pins in the firmware, but the test code does not say the pins. I will soon a a piece of test code for you to try out that uses the #define method rather than what the other code uses.

Jared Rementer

Apr 15

Replying to

I think all we have to do is call out the motor like this: AF_Stepper motor1(200, 1);

AF_Stepper motor2(200, 2); Then where ever we move the motor refer to: void forwardstep1() {

motor1.onestep(FORWARD, SINGLE);

}

void backwardstep1() {

motor1.onestep(BACKWARD, SINGLE);

}

// wrappers for the second motor!

void forwardstep2() {

motor2.onestep(FORWARD, SINGLE);

}

void backwardstep2() {

motor2.onestep(BACKWARD, SINGLE);

}

Jared Rementer

Apr 10

Okay I have found the pin out I need. Can you help me understanding what the chameleon code functions do. And I will know what pins I need to in put.

Jared Rementer

Apr 09

I am lost. I don't know how many times I tried to start over with this. What file needs to be changed to adjust the pin out and what application are we changing it with? Do I need to add the AdaFruit Library? Will that work with your program? I have seen so many videos on the library's. had all of them installed and nothing worked. Cleaned it all off and started from scratch and getting no where fast. Tried to order your board from the suggested site and there is no CPL file for them to know where to install the parts off the BOM. Any help would be greatly appreciated. I am using this board? https://lastminuteengineers.com/l293d-motor-driver-shield-arduino-tutorial/ It seems to me that it would be perfect for this project. But I am having a hard time understanding most of the directions here. Seems to be filled with holes and dead ends.

Liam Pulido

Apr 09

Replying to

I have never seen one of those shields, but if you are having too much trouble, you should just move to a CNC Shield, which (in my opinion) work quite well and reliably. As for your pinout question, you modify the chameleon code in Arduino IDE. Here is a pic of the part you need to modify (note: you will need to find the correct pinout, as the one in the pic will not work work with your shield):

the parts that say #define are the parts you will have to change the numbers on.

Jared Rementer

Apr 09

Replying to

This maybe where I am having trouble I do not see this file. I am following https://www.3dchameleon.com/forum/support/this-arduino-noob-needs-some-help-with-arduino-cnc-shield-v3-please?searchTerm=ard to upload the 3 files but none of those files show SelectorFirmwareMK4-nano.ino. Is it possible to get instructions on loading this file? I will create my own video on how to do this once successful.

Stick it on my Youtube channel if you guys are okay with that?

Liam Pulido

Apr 10

Replying to

also that file name is just an example. This is just a screenshot of my code for the CNC Shield v4. The pinout area in the OG code shold look the same, except for a few numbers changed.

Jared Rementer

Apr 09

I have work on projects in my time but this!!!! WOW! is all I can say.

Jared Rementer

Apr 08

Still having issues after uploading the firmware. The motors seem to want to move but don't ever really do. I figure it would really move after the loading starts but it does not seem to work. Are there some type of motor settings that can be or need to be entered in the code ? This device does require the adafruit library. I am wondering if the current Firmware works with the adafruit library?

Jared Rementer

Apr 03

Okay. Thank you Bill. That is done. I will have to figure out what connection pins I use for the trigger and test.

Bill

Apr 02

You're trying to load the wrong file... you need to use the Arduino IDE to load the SelectorFirmwareMk4.ino file... and then burn (using the > in the upper left tool bar) to the Uno.

Or, if you have the hex file, you need to use the AVRDude program to burn the hex file directly to the eeprom... but that's not recommended if you're using an Uno... just load the project and upload it to the Unoboard from the IDE.

Follow the guides for any Arduino project to load it to the Uno.

Bill