Carrying on the “I plugged it in and it just worked” theme, this is the test version of the power supply for the main processor of the Mitochondrion. This feeds a nice steady five Volts to the processor. It should solve the problem of the processor telling the rest to turn on, the rest turning on and sucking up all the power, the processor then dying coz everything else is turned on, and nothing gets turned off coz the processor is ded, and then you’re stuck until the batteries run down.
For the non-geeks, the clever part is the tiny chip on the little green board in the middle. For the geeks, it’s a MAX710 step-up, step-down DC-DC converter. 5V, 500 mA, damn high efficiency.
I plugged it in, it worked. The glare is the LED to prove it worked. It probably worked coz I’ve learnt to spend half an hour checking every little thing before plugging it in.
Of course, when I say it worked, I mean I plugged it in to a wall plug and it kicked out five Volts. I have yet to test its stiffness (quiet in the cheap seats, I mean how steady the output is when the input is bouncing around from three to six Volts in about a millisecond). But we’ll save that for another day.
When the final version is built, it’ll be 25 mm by 15 mm. That’s not bad for something kicking out 2.5 Watts.
The Gannt chart for the next step of the Mitochondrion has forty-seven steps. I’ve ticked off another seven this week, taking me up to twenty-one. This project planning thing is psychologically valuable, otherwise I’d be just looking at the Heap of Stuff to Do, and feeling intimidated by its seeming endlessness.