Trying to fit 2 MPG

[keith wainwright]

I converted my m300 Quite a while ago and after a few hiccups got it to work just fine. I use a ess smoothsteper and 2 bobs. I decided to fit 2 MPGs of the internet , simple 4 wire items easy to set up they say. Gave each 5 volts from the bobs and the ground from the same bob put the other 2 wires to inputs . In setting's I set for bob no 2 and input 2 and 3. Nothing at all happens? Changed inputs to proper inputs. Nothing? changed power to a phone charger . Nothing . Any body know what the simple thing is I got wrong. Thanks

[Clive S]

Depending on the bob they might need pull-ups what bobs are they?

[keith wainwright]

eBay item number:
122515449243 Sorry I don't know teck specs

[keith wainwright]

eBay item number:
121924104910 this is the bob I have 2 thanks

[Clive S]

eBay item number:
121924104910 this is the bob I have 2 thanks

Well with that bob you will have to supply the bob with 12-24 v as well for the input pins to work

[m_c]

A 5V MPG won't be able to drive the inputs on that BOB directly. The inputs on those BOBs are rated at 12-24V.

If you could find a datasheet for the optos on the board, you'll probably find you could change or even bypass the series resistors on the board, so they'll work on 5V, however it would depend on the current needed to drive the optos, and how much current the MPG can deliver.