![]() The 3 pins select which one of the 8 wires is connected to the one wire. ![]() ![]() To my understanding, all I need to control these are 3 pins on the 4051s There is an associated serial resistance with the path through this device, this is different for different manufacturers so check the data sheet. Yes providing you are getting a good signal from the IR sensors. Would these be suitable or fast enough to switch You can cascade 4051s to get as many inputs as you like therefore you will need one 4051 for every 8 sensors. Yes I think it will be the simplest option. You are the best and a genius if you can even answer one of these questionsĪlso That is a great link btw it is very helpful it opened me up to so many possiblities, Thankyou so much grumpy_mike XD XD XD XD XD XD XD XD XD XDĪre you suggesting I use a 4051 and loop through all the sensor readings? I also found this which is helpful if anyone else is reading this that has the same low knowledge as me Last but not least, How do I incorporate the emitters then? Do I just hook them up in parralel with the arduino to the 12v adapter (making sure I lower their voltages) and then control them with a transistor or a simple relay to turn them on and off so theres no power wasted?.If I have 3 4067s for a 8x12 matrix of LED's and 1 row of 12 photodiodes and 4 blank inputs reading on 1 input to the arduino, that uses 1 Analog in and only 12 Digital Pins right?.I havnt been able to find many 4067s are there any other 16 channel multiplexers that are similar.In your footsteps example, You have 3 pins on the 4051 going to ground, and 1 to the analog input, If I were to not use it as an input and rather an output, how would I do it? I have searched it and only found examples with confusing diagrams.To my understanding, all I need to control these are 3 pins on the 4051s and 4 on the 4067s?.Would these be suitable or fast enough to switch (I know the photodiodes probably dont but the LED's from the prev question do), I really dont know how to read the datasheet.I never even new these extenders existed until now, so looking back on this: Would it be suitable to use 2 4051's to control an 8x8 matrix of LED's or maybe even 2 4067's and I could have a 8x12 Matrix?.Are you suggesting I use a 4051 and loop through all the sensor readings? After reading this: Arduino Playground - 4051 I feel it is probably a good idea.Ok after reading that page I think I understand what to do, but am still confused. This is an example of multiplexing many analogue inputs into the arduino:.
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