Let's Make Robots!

Herr Mimik

Listens and speaks, moves its hand and animated head

Herr Mimik is a table robot which consists of a single 5DOF robot hand and an animated head. So far I've built the hand and parts of the head. The hand is also used as a studying object for the MAAHR project.










Construction of the hand


The eyes are vertical and horizontal moveable. A nose will be added, maybe with a CO2 gas detector to detect human breath.

The animated mouth will be something like that.

I did some first experiments with the speakjet chip. The schematic is as following:

The two jumpers are used to change the baud rate by changing the logical states of pin M0/M1 and sending the serial sync character (hex 55, dec 85) at desired baud rate.  Around 1400 words in decimal format can be found here. The complete decimal code of one word is composed of:

20, [volume], 21, [speed], 22, [pitch], 23, [bend], [word code].

The volume can have a value of 0-127, the speed a value of 0-127, the pitch a value of 0-255 and the bend a value of 0-15.

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+10 pts for the bird.  You could mount this on your car as a new "how am I driving" indicator...

Yes, I designed the nose in honor to your chickens :D

well done but I think the springs need to be stronger and less elastic!

I had the same thought. If you could find springs that were a little stronger, but still allow the servos to overcome their pull, the robot's fingers would extend more completely.

The hand is looking truely excellent!

Hi IG,

The springs need to be a little bit stronger and I need to do some adjustments. Just used ball pen springs, because I had nothing else around.

LOL, that's funny! Thanks, JAX!


That hand looks awesome! Great work. 

Interesting and sharp looking design! - look forward to the video.  You inspired me to check out the price on the SG5010 servos and at $5 including shipping from Hobbypartz I decided to pick up eight of them - hope they are good performers :)