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RIP ESP-12

A project log for µBob biped robot

Two legs, four servos, ATtiny85 for brains

deʃhipudeʃhipu 06/05/2015 at 21:412 Comments

I have a lot of bad luck with this project. Or maybe I'm just sloppy. Anyways, I uploaded the nodemcu firmware, uploaded the uBob code, and decided it's time to test the servos -- to do that, I need to run it from a battery. So I got out my battery, and tried to connect it, but the connector wouldn't want to fit... So I forced it. And when I saw the blue smoke, I realized I connected it backwards...

The module fried, along with the power switch. Probably also the distance sensor.

I quickly desoldered the fried module and switch, and soldered new ones (ugh, my stash is running out). Uploaded firmware, uploaded code, connected battery, connected servos, ran it:

It works! Of course I switched two of the pins, but that's a small correction in the software. But does the distance sensor work? A quick test says "no". It always returns 1. And I don't know if it's a bad connection, bad wiring, or if I fried it too. I also don't have enough motivation now to desolder everything and solder a new sensor, so I'm putting it off to some later date. Maybe by that time I can use Micropython!

Discussions

davedarko wrote 06/05/2015 at 21:44 point

Oh no :( Good luck on repairing it!

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deʃhipu wrote 06/05/2015 at 22:10 point

Well, at least I'm back to the initial features, so it's not so bad. Plus now the eyes are on a gpio, so I can blink.

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