Busman: Dear lady, what I mean is that the price of labour is getting cheaper! Even with its food, a robot costs no more than three quarters of a cent per hour! It's wonderful; every factory is buying robots as quick as they can to reduce production costs, and those that aren't are going bankrupt.
Helena: Yes, that's right, and throwing their workers out on the streets.
Busman: Haha, well of course they are!

- Karel Čapek, R.U.R.: Rossum's Universal Robots

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The energy source

In this section we are going to introduce the energy source providing the Blue Seal Robot with power to run. We will learn how to convert the energy stored in rechargeable batteries of changeable voltage to an energy source of stable voltage over largely varying current drain.

The Raspberry Pi drains direct currents from interval 700mA - 1000mA at stable voltage of 5V.

To be continued...
Blue Seal Project created by Jiří Daněk (2013-2016)