Black Lion PG-2 Type F - I don't recommend it.

[Pixel]

Maybe nowadays somebody offers a similar function power strip, without the "conditioning" mumbo jumbo, just 5 or 6 sequential outlets.

Looked around and saw I have a handful of pcb relays that could be convinced to provide some kind of sequential outlet controller with relatively simple support circuitry. But then I see that I can get a $10 premade "hat" for a Raspberry Pi or Arduino that already has 8 relays on it. There's a new sheriff in town.

[J M Fahey]

Good!!!
Although not sure they can handle "Power" or even Mains Voltage, the Digital guys usually live in a low voltage low power World

Thois might be the exception, of course.

Any link?

$10 for 8 relays mounted on a board sounds too good to be true

But I may be mistaken, of course.

[Pixel]

Good!!!
Although not sure they can handle "Power" or even Mains Voltage, the Digital guys usually live in a low voltage low power World

Thois might be the exception, of course.

Any link?

$10 for 8 relays mounted on a board sounds too good to be true

But I may be mistaken, of course.

This is the one I was looking at. Not sure how good the relays are, but they are rated for 10A 250VAC. https://www.pishop.ca/product/8-channel-relay-module/

Upon closer inspection it appears it needs an interface between it and the Pi or Arduino to provide enough current to drive it.

[J M Fahey]

Incredible!!!

*Probably* you apply 5V to the last pin and ground the others at will to activate each relay.

5V and mere 15-20 mA for the coil means any humble TO92 NPN transistor will do, triggered by some Logic of course.

They mention the datasheet of a similar board.

You young´uns have it EASY

We had to mine copper and iron to build our own relays

I can easily imagine a 555 or similar driving a decade counter with 10 seconds wide pulses to turn all 8 in sequence. , plus latching to keep them ON once triggered, until the next power failure which would turn all OFF and reset the system.

[Pixel]

Incredible!!!

*Probably* you apply 5V to the last pin and ground the others at will to activate each relay.

5V and mere 15-20 mA for the coil means any humble TO92 NPN transistor will do, triggered by some Logic of course.

They mention the datasheet of a similar board.

You young´uns have it EASY

We had to mine copper and iron to build our own relays

I can easily imagine a 555 or similar driving a decade counter with 10 seconds wide pulses to turn all 8 in sequence. , plus latching to keep them ON once triggered, until the next power failure which would turn all OFF and reset the system.

You forgot to mine the coal to fire your steam powered generator.

I have no need for anything like this but it is tempting to build a power sequencer just for fun. I can totally see your solution from the description. Due to my background I immediately thought of a Raspberry Pi based solution with a single pushbutton and an LED to allow parameter setting. Hold the button to program, push the button once after counting led flashes to set seconds of delay for each relay. But then I thought, use an Arduino with analog to digital capability and just have Arduino watch the voltage and turn on each relay in sequence as voltage stabilizes. There are so many ways to do things.