Hi Guys,
I'm trying to build a robot that performs a simple task for my grandma, at a certain time and date it will move on its own from point A to point B and wait until groceries to be delivered after they place the packages on top of it, it will move on its own from point B to point A to the charging station.
I've been trying to learn by myself but I'm not being successful
So if you can help me, it would be great.
The project pieces, Arduino Uno, L298 for the 2x Electric Motor Gearbox, RS390,
I Need help with the schematics and the programming as well as sugestions for the project to be more efficient. Battery and charging ideas.
This is a project for me to help someone to get by when we are not around but is also a learning process for me.
Thank you for you assistance.
You have been working on the proj. Attache the best You have of schematics and code.
A line following concept could be a way to go.
Can you please add some specifications for the robot?
How much weight?
What motors are you using?
What type of housing do you plan to use?
how many wheels?
Theres a lot of information required to make decisions. Provide them.
Rs390 motors are small and provide little torque. Moreover, they work on 6 volts, so theres a probable voltage matching issue which might increase cost without any benefits. I suggest 775 motors, They are really powerfull and made with torque in mind.
200th post, I gosh darn love grandma projects.
Anyways, Have you bought any housing for the robot? Or do you plan to build one.
I suggest you build the housing first and then look at the logic side.
Couple of immediate problems. An L298 will not drive those motors, they take way too much current. And unless Grandma's groceries are never more than about one small box of cereal those motors won't move them even if you get a decent motor driver for them.
Start with the size the robot needs to be and the weight it must carry. Then you can start thinking about what components it will need and how to power it.
Steve
Making a light version of the robot, solving the navigation, the finding of the charging station, could be a good preproject work.
Hi, thank you for all the feedback.
Sorry for the late response: I will build the house of the robot it a box of 50 cm by 50 cm by 50 cm, its a box with a door and a lock and it will carry around 10 to 20 pounds.
it is doable with Arduino what would be your suggestion?
"it is doable with Arduino what would be your suggestion?"
Looking at the project, it looks to be fairly complex to be reliable for actual use. and maybe not a first time project. Build a simple small bot first to experiment with, and when that works, go for a larger scale bot.
ricardosouza9795:
Hi, thank you for all the feedback.
Sorry for the late response: I will build the house of the robot it a box of 50 cm by 50 cm by 50 cm, its a box with a door and a lock and it will carry around 10 to 20 pounds.
it is doable with Arduino what would be your suggestion?
Is it doable? Heck with proper logic and control you can make a small rockets with these tiny beasts!!
I agree with zoomkat(cat?). This project seems like something someone would simply rely on to accomplish something. And the way you are asking suggests you may know very little about these things. So i suggest you seek professional help.
IF, You HAVE to do it by yourself, you need to familiarize yourself with few things.
Do you know how to solder?
Do you understand torque and power output?
Do you understand power requirements of the needed electronics? (eg. Voltage and amperage needed for seperate parts?)
Is the robot going to travel in a straight line? Are there any doors in between?
Does the robot need to be environment proof? is it to be kept outside in rain and snow?
What is the distance the robot needs to cross?
One more thing, Complete cubic structure is mostly not practical for Wheeled vehicles. This raises the center of mass and thus increases chances of tipping over. Go for a more square shape, that has lower height and a nice length to width ratio, ( i heard the golden ratio is 1.618 , is this true? anyone?)
