@zeferby Thanks for that I will have a play over weekend, I want to get more done on layout but I have in Garage know and the weather turn a lot coo...

@zeferby Great I have only 2 boards at the moment so have just ordered 4 more from China so may take a while before can try... John

@zeferby Am I correct in thinking that the 16 Push buttons are connected to the first 2 boards P0 ... P7 and LED outputs are connected to the second...

@zeferby I also found this data sheet on the module which is helpful with setting address for each board.. John

Hi Eric.. I watched a video last night regarding the PCF8574 which was quite informative, and from that I can see that the output ithe opposite of a...

Hi Eric Thanks very much that will be a big help, in the sketch there are 2 tabs one with the origanal sketch and one with the PCF8574 sketch, do I ...

@zeferby Hi Eric just saw your reply, yes I will try that, can see a few errors I made ..

This is the sketch with arrays ... it compilaed but didnt work..

Hi Eric, I tried using 595 shift registors as I saw a Youtube were someone had made a multiple operation keyboard but I couldnt get to work so I tried...

Hi Eric, some time ago you posted using the PCF8574 module and I was considering using this or the PCF8575 as a way of switching so I can get rid of t...

Hi Eric hope you are well, I found this on Arduino forum but like you say maybe it wont work with the PCA9685 ... its just on my sketch I think the pr...

@zeferby Hi Eric and Dorsay, Hope everyone is safe and well, I am after a couple of months off Railway project trying to sort, know the last time ...

Hi Eric, Yes I understand about changing to 16 channels and the pin No need adding and the left and Right limits need adding for each ... but a few li...

#define NB_OF_SERVOS 4 // Let's have arrays so we can adjust the nb. of servos int switchPins[NB_OF_SERVOS] = { 2, 3, 4, 5, }; int s...

That looks nice, but only jokeing about rabbit we love her she does have a health problem not sure what happened but she has a cist or lump full of pu...