If you like what you see, the robot will then begin to draw your portrait on a piece of paper. It does this using two human-like arms which are made from aluminium and driven by two stepper motors.

It’s a simple robot that drags a pen around to draw on paper. [Tim] decided to build one that uses a simple skid-steer design to get around the page. An Arduino Nano is the brains of the ...

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Unlike with a traditional blood draw, the patient does not see the needle go into the arm nor the tubes of blood. The process takes about two minutes and has a 95% success rate on the first attempt.