Protein is a source of calories. Generally, protein and carbohydrates contain 4 calories per gram, while fats contain 9 calories per gram. Most people in the U.S. meet their daily protein needs.

Many of his projects are small biped, quadruped, or even hexapod robots. He’s done things with 9 gram nano servos that we thought were impossible. Tote, an affordable spider robot, is his latest ...

To solve humanity’s glaring lack of walking robots, [Radomir] designed Tote, a four-legged robot whose chassis is mostly composed of only 9 gram servos. There are twelve servos in total ...