botdemy

The above video is made with 6V motors.

See the video with 4xAA NiMH cells. It is walking. :)

yes

ditto

ditto. with esp8266, the cost would be < $10.

RPi Zero W looks promising and I will definitely use it for more advanced projects such as using camera and computer vision. That being said, you still have to add an SD card and a console cable to do the initial configuration so cost goes up to $25.

I'm not sure what type of Adafruit motor shields you have but I believe adafruit has a good tutorial on how to use their products. Adafruit may even have a library so you could use the library and their functions in your code. Basically you have 6 pins to control: left +, left -, left pwm/ena, right +, right -, and right pwm/ena. If you're not going to use PWM, set PWM/ENA pins to always high. (Mine came with jumpers to set them always high). If you do that, you now have 4 pins to control - 2 for each motors. Just play with the code until it works. That's the best way to learn.

Looks similar to YL64. It has S0-S3 for input and OUT for data. Not sure about the LED pin. Could be same as E0. You'll just have to test it out.

That explains why I cannot get this to work in cicuits.io. :) In circuits.io, transistors are perfectly identical so they both conduct at the same time.

That's a cool project!

You will have to figure out on your own. That shouldn't be too difficult. Basically, your main loop has to check 3 sensors (2 IR and 1 Ultransonic) for their values and decide what you want to do. For example, below is another version I have worked on. It checks for all 3 sensors.

One way to debug your issue is to try controlling the rover (go forward, turn left, right, stop, turn of/off light) without using remote; just using the program itself. If that works, then you move onto adding a remote control and try to figure out what's going on with remote communication.

Hi,Try turning the wheel and turn on/off the headlight using the code first.If that works, then test out your remote communication. Ex, press 'up' and make sure your code sees the encoded value of "up"

You could get them from Aliexpress: https://www.aliexpress.com/item/5pcs-Breadboard-Power-Supply-DC-DC-3-7V-5V-to-9V-step-up-boost-converter-module/32649623500.html?spm=2114.13010608.0.0.4cXdI4

Yes