How much approximately will cost the cost of independent development of mini robot for arduino?

I want to make a baby gift with your own hands.As by profession I am a technician - programmer, so decided to try myself in working with arduino.I want to make a mini robot that will move and make sounds.
1)How about the cost out such a project?
2)how long and hard to create?
3)Where to get information and to make an order?
4)is There a decent analogues arduino?
5)it be Cheaper to buy a toy robot?
Thank you!
March 12th 20 at 08:42
3 answers
March 12th 20 at 08:44
1. From two thousand (the Board itself, a pair of motors with gear, motor controllers) to infinity.
2. Depending on the skills
3. Aliexpress
4. stm32 (much harder) or ESP8266 but the meaning for a start I do not see them
5. Depends on what you need the result - the skill build/design or programming skill. With the finished toy, you will be able to do what it is intended. Developing from scratch - anything you want. If so and so, only individually, so it was fun.
March 12th 20 at 08:46
There are all sorts of ready kits for Arduino, pushes away from them.
For example here (in Belarusian, if that)
March 12th 20 at 08:48
1) At the most basic level, probably, thousands of 5-7 you can meet, or even less.
2) There are plenty of ready instructions.
You can make stupid guides, but a basic knowledge of electronics and programming skills are welcome.
Where to get information

books, youtube, google
and order everything you need?

ampere cheaper on aliexpress
5) easier (but not cheaper) — lego mindstorms
if the child is of appropriate age, it will be interesting and useful for myself along with my dad to assemble and program the robot.

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