This robot uses AI to find Waldo, thereby ruining Where’s Waldo | 19mm Momentary Push Button

I prefer polycarbonate chassis with see-through lids. That facilitates continuous inspection while the device is in operation. I do agree that an output circuit breaker is not a bad idea. I’m comfortable with relying on the individual breakers on the input circuits combined with the two primary relays, which rather indirectly achieve the same purpose as the trip bar.

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Where Madrid, Spain Price from £28,000 (est) On sale Feb 2019 Engine 4 cyls, 1987cc, petrol plus electric motors Power 178bhp @6000rpm Torque 140lb ft @ 6000rpm Kerb weight 1410kg (est) Top speed tbc 0-62mph 7.9sec (est) Economy 74.3mpg (est) CO2 86g/km (NEDC est) Rivals VW Golf, Ford Focus

A steamy day on the flat roof of a building will let you feel how many inches the 480 can sting your fingers from also.

If ever there was a right time to change the name, it’s now, as this ground-up, all-new car launches with all the incumbent R&D investment and expectation you might expect for a vehicle that has been benchmarked to beat the class best. So while you might reasonably argue that it would have been more straightforward if the naming U-turn hadn’t been made several months after the car was unveiled as an Auris at this year’s Geneva motor show, the truth is that when Corollas start running down the line in Burnaston, Derbyshire in a few months time, surely only Google will recall it.

This is very dangerous. Safety regulations are all about keeping mains voltage away from people, inside casings that are earthed or double-insulated. This has the voltage just lying there. Possibly covered with a bit of silk-screened paint. It’s not guaranteed to kill someone, but for the extra money I’d sooner have a non-deadly heater for a 3D printer.

I think most people recommend having the PSU switched off at the wall. That way it should be pretty much safe, but there is still the other issue you mention.

This! I just want to add: >3. Verify that the system is really dead. Use an appropriate tool. Test the tool, test if the system is dead, retest the tool. It should be broken or may have broke while testing. >Use nonflammable clothes. Yes! Synthetic materials melts, sticks to your skin and burns – you don’t want this! >Use electrically protective gloves. and check them before use! Do not work alone and if the second person has no clues about electricity instruct him: -What NOT to touch. -CUT THE CURRENT before trying to help somebody that has been electrocuted. -Where the main breaker is and how to operate it. Have a fire extinguisher and a fire blanket (if you catch fire) handy.

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I first thought we were about to see the actual moment when it was about to blow. But this is post mortem autopsy.

You need to learn how to read a datasheet and understand the terms – without an understanding it won’t do you any good.

The heater from the inner layer of the PCB still needs to exit to the surface using vias or plated through holes some how. So the contacts are still exposed. You might use a TRIAC in something like the phase control in a dimmer switch as a PWM to control heater power, but the peaks voltages at the output are still at line voltages levels.