Emco PC120 Turn

[Clive S]

Nothing works. Ive tried every option.

Have you put power on the 12-24v power supply as well as the pc 5v.

As I think that the inputs are powered from the 12-24v supply (don't quote me though)

[cropwell]

I am sure you are right Clive, the 5v from the PC is only to power the input optos. I have the board in front of me and the 12v track is on the top face and disappears under components, so I can't trace it through.

(Chaz) The board you show as an example on eBay is overpriced, you can get them from China for less than a fiver and not much more than that from a UK supplier.

Rob

[Clive S]

the PC is only to power the input optos

Rob do you mean the outputs just for clarity

[cropwell]

Rob do you mean the outputs just for clarity

Probably, but I am sure they do more than just provide clarity

I am up to my neck in computer problems at the moment. The computer says press any key to boot from CD.... and I can't find the 'ANY' key - none of the ones on the wireless USB keyboard work and I haven't got any other sort.

[Chaz]

Have you put power on the 12-24v power supply as well as the pc 5v.

As I think that the inputs are powered from the 12-24v supply (don't quote me though)

Ah, no. There is a Ground, VCC and two inputs. What voltage goes into the trigger (5V?) and 24V into VCC?

[cropwell]

Ah, no. There is a Ground, VCC and two inputs. What voltage goes into the trigger (5V?) and 24V into VCC?

Are you talking about the relay board ? Because if you look at the back of the BoB it is clearly printed on. The relay board takes GND, 5v on Vcc and the two inputs are 5v max.

[Chaz]

Are you talking about the relay board ? Because if you look at the back of the BoB it is clearly printed on. The relay board takes GND, 5v on Vcc and the two inputs are 5v max.

So to be sure.

Relay board has 4 connections.

One is Ground, once is VCC and two are triggered inputs (5V)? The VCC is 24V? If that is the case, I did not connect 24V.

[cropwell]

5 V +on Vcc on the relay board or you will burn it out !

[Clive S]

Chaz wrong time of night for sense But I think you need to supply the bob with two power supplies one 5V and the other 12-24V before you will get any sense from it. Those bob's are £3,20 from ebay (China) inc PoP

[Chaz]

So, is this correct? If so, assuming the PC setup is right, my BoB is broken. P17 never changes state / voltage.