Home switches wiring / setup

Have you seen my reply a few post above? They solution is in the grounding I think.

The PP cable came with the BOB, so I assume it’s correct.

remon_v wrote:

Have you seen my reply a few post above? They solution is in the grounding I think.

The PP cable came with the BOB, so I assume it’s correct.  

There are plenty of cables that don't have all the wires connected.

I would start from again connect the 24v to the bob connect 5v to the bob (forget the usb)

Re you saying grounding are you talking about earth or the -ve of the ps

I think there is a PPort tester as well. Do you have the PC with a PPort as there are com ports that are DB25 and look like a PPort

wiki.linuxcnc.org/cgi-bin/wiki.pl?Parallel_Port_Tester

Oké… I just did something stupid and fried the BOB by connecting the GND to the - from the 24V power supply…image missing /media/kunena/emoticons/sad.png

I ordered a new one right away, this time a green version. I’m not happy with the connecting terminals of my blue BOB.

I download the PP tester and I disconnected it… I can push all the outputs, they turn green. I’m not sure how to trigger the inputs.

I also ordered USB A male breakout boards, so I can connect a 5V power supply to it… 

oops can't you get the magic smoke back in ?image missing /media/kunena/emoticons/cool.png

I have never had any issues with those China bob's ever

re: I also ordered USB A male breakout boards, so I can connect a 5V power supply to it… 

Not sure what you mean by the above.

You can use a buck converter to convert the 24vdc to 5v dc  like the one in the pic a posted.

ground and -ve are two different things . 

Please check the pp cable

To test inputs using the pp tester use a 470ohm resister to connect an input pin to a ground pin. The input pin should change state when grounded vs no connection. Likewise the input pin (parallel port side) on your BOB should float high (may or may not have it's own pull up voltage) and be pulled low to ground when active. I've seen some wonky cheap BOBs that didn't have sufficient pull ups to work correctly with some parallel ports and I had to add a pull up from a 5v source.

From what I see the terminals from the green BOB look better… with blue I had some trouble with the screws.

I mean these break out boards for USB:
a.aliexpress.com/_mOmejyo

I have a 5V power supply and a buck converter, but I think I will use a 5V power supply.