Let's Make Robots!

R2D2 Legs

mintvelt's picture

This page is part of my mini r2d2 project and this is where I keep track of my progress on it's Legs.

I only just got started on them and allready I realise there will be lots and lots of sanding to be done. The legs are very thick so I need to glue several pieces together.

Drive around, beep, blink and look good
Using a
A few months ago I stumbled upon a couple of plastic spheres sizes 16cm and 4cm in diameter. The spheres came in separate halves, making them ideal for a small … Read more

R2D2 Body

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This part of my mini R2D2 project. i'll post all the updates on the main body in this blog page.

This is the first bit of frame with some extra bits. Those pieces are for two doors: one large one that covers allmost the whole back and a small one in the front.

R2D2 dome : FAIL

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This is part of my mini-R2D2 project. I intend to keep blog pages for the different parts of the building process. 

The dome is made out of a clear plastic sphere. I found 2 globes 16cm in diameter and 2 smaller ones 4cm across.

First step. Dremel off the bit that is sticking out and sand the whole thing. 

Embedded video: 
Update: (this was all done a few months ago) Removed the servo that moved the eyes. Eyes are now fixed. Added an infrared receiver. Still toying with the program, … Read more

08M motordriver and power supply board

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After a few weeks of waiting, my PCBs have arrived. I just soldered the components on the first one and it works like a charm. I had to drill out the holes for the resistors a bit and then solder the resistors on both sides of the board to get a good connection, but hey: this was also my first shot at having a PCB made and it works. Next time I'll be more careful checking out the dimensions in diptrace.

Dont keep your inputs floating!!!

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I keep hearing and reading about the importance of making sure all the unused inputs are pulled low with a resistor. No reason is given other than "don't keep them floating because you'll get unpredictable results!"

If you take a look at the picaxe 28X board, you see that all the digital inputs are pulled low with a 10K resistor. I understand that this makes it easier to just connect a switch to the pins on the board without having to add an external resistor. The analog inputs are left floating, almost as if by design.

Arms for Edward

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After lots of thinking about what my next robot should look like, I couldn't resist the temptation of trying to improve Edward. I never really made a good program for him and everybody who sees him ask me to switch him on and let him run around. When they do, i shrug and tell them "the batteries are dead" or "I'm still working on the programming".

PicAxe 20X2 mainboard

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This is the second board I received from sparkfun / batchPCB. The other one, a motor driver, is tested and done.