[Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

johweb · Post by **johweb** » Mon Oct 10, 2016 2:58 pm

I re-soldered keep-on on pin 8.
Yes, when I short the two grey wires, it powers off the powerboost

Camble · Post by **Camble** » Mon Oct 10, 2016 3:05 pm

Have you tried the just with the Pi, and no screen? If you have Discord, send me a PM. I can respond quicker.

If you have a multimeter, please turn the switch to OFF and measure the resistance between EN and GND on the Safe Shutdown PCB. It should be around 500-1000 ohms.

johweb · Post by **johweb** » Tue Oct 11, 2016 5:27 am

I just tried with the screen completely unsoldered, it's the same result : pi shutdowns completely, powerboost stays powered.

I found a multimeter and without power plugged and switch off : resistance value is moving a few seconds and stabilizing around 1.9 M ohms. Far not between 500 and 1000 ohms...
I made the same test with power plugged : I've got a zero value, and it's making the powerboost to reset.
What do you think about it ? Maybe it's the point ?

I'll create a channel on Discord tonight (around 08h30 pm, Paris time). I'll send you a PM to join, if you are available of course.

Camble · Post by **Camble** » Tue Oct 11, 2016 5:46 am

johweb wrote:resistance value is moving a few seconds and stabilizing around 1.9 M ohms

This is far too high. I suspect either the JFET is faulty or damaged. If you PM me your E-mail address, I'll send out a replacement. You can send the other one back if you like and I can replace the component.

johweb wrote: I'll create a channel on Discord

There is already a Sudomod channel.

johweb · Post by **johweb** » Tue Oct 11, 2016 5:52 am

OK, thank you very much for your help and sorry for the trouble...
I'll PM you.
Maybe DarylUK could do the same test (he had the same kernel panic) ?

Camble · Post by **Camble** » Tue Oct 11, 2016 5:55 am

@johweb Don't apologise. It's me who owes the apology. If you do send the board back, I'll re-test it and hopefully find out more.

OrbitalPi · Post by **OrbitalPi** » Tue Oct 11, 2016 6:20 am

Any ideas when you'll be rolling out another batch? Would really like one for my build

Camble · Post by **Camble** » Tue Oct 11, 2016 6:28 am

@OrbitalPi Maybe at some point next month. Will have to see how things go with the remaining boards and the BangGood edition.

OrbitalPi · Post by **OrbitalPi** » Tue Oct 11, 2016 7:37 am

Pardon my ignorance but BangGood edition?

Camble · Post by **Camble** » Tue Oct 11, 2016 8:00 am

OrbitalPi wrote:Pardon my ignorance but BangGood edition?

This board to work with this power supply.

[Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

Re: [Pre-Order] Safe Shutdown Switch (PowerBoost Version) - Closed

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