Author Topic: Relay bypass LED functions backwards  (Read 184 times)

patrick398

Relay bypass LED functions backwards
« on: April 17, 2020, 08:43:01 AM »
Just got some PCBs back and seems i have routed the ins and out for the relay backwards which means the LED now lights when in bypass and not when effect is engaged. I've been thinking about this for a while and i can't see a simple way around this, am i being stupid? Is there a fix that doesn't require trace cutting and jumpers?




patrick398

Re: Relay bypass LED functions backwards
« Reply #1 on: April 17, 2020, 10:36:13 AM »
I've lifted the side of the 2k2 reisistor which goes to ground and instead tied it to +9v, now with the LED flipped it works as it should.
Am i at risk of damaging anything though? I can't see how but i'd rather double check

Cheers

duck_arse

Re: Relay bypass LED functions backwards
« Reply #2 on: April 17, 2020, 11:07:32 AM »
it's a standard config for the 555, so you should be oakie doakie.
I started a joke, which started the whole world laughing - Bee Gees
"You're going to look like a bunch of jerks."
You look just like an Elvis from hell - J. L. Pierce
Oww-owh, but I couldn't see, that the joke was on me oww-oh - Bee Gees

antonis

Re: Relay bypass LED functions backwards
« Reply #3 on: April 17, 2020, 12:25:57 PM »
you should be oakie doakie.

In English, plz..
('cause it's all Greek to me..)
« Last Edit: April 17, 2020, 02:16:16 PM by antonis »
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

Digital Larry

Re: Relay bypass LED functions backwards
« Reply #4 on: April 17, 2020, 12:28:59 PM »
oakie doakie = OK
Digital Larry
DSP tinkerer and former transistor twister

Ice-9

Re: Relay bypass LED functions backwards
« Reply #5 on: April 17, 2020, 05:06:08 PM »
or even 'Oki Doki'   ;D ;D
www.stanleyfx.co.uk

It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

patrick398

Re: Relay bypass LED functions backwards
« Reply #6 on: April 17, 2020, 05:09:14 PM »
But definitely not hokey cokey

duck_arse

Re: Relay bypass LED functions backwards
« Reply #7 on: April 18, 2020, 11:41:23 AM »
no wuckin furries, mate.
I started a joke, which started the whole world laughing - Bee Gees
"You're going to look like a bunch of jerks."
You look just like an Elvis from hell - J. L. Pierce
Oww-owh, but I couldn't see, that the joke was on me oww-oh - Bee Gees