Go Down

Topic: Solution for the 5V vs 3.3V problem (Read 13 times) previous topic - next topic

Graynomad

Quote
I don't think I can use these

Probably not, I can't see that they are linear.

Quote
I'm not sure if I should just use a voltage divider because I'm concerned with accuracy to a certain degree.

A voltage divider is the easiest and probably the best way to do this. I see no reason to think there would be accuracy problems if you use good resistors.

______
Rob
Rob Gray aka the GRAYnomad www.robgray.com

bobcousins

Just for interest, here is a board I am working on to interface Due to a 3D printer controller (RAMPS)

http://reprap.org/wiki/File:RAMPS-RIB-Back.jpg
http://reprap.org/wiki/File:RAMPS-RIB-Assembly.jpg

It is application specific, I am using TXS0108 to adapt some signals, with some gate drivers for MOSFETS.

I had trouble finding connectors with the same height, but they seem to connect ok.

Source files on github https://github.com/bobc/bobc_hardware/tree/master/RAMPS-FD
Please don't PM me asking for help. Ask questions in the forum.

Graynomad

Thanks for that Bob, looks interesting.

FWIW I think I've found a way to do this with very good compatibility for all/most shields.

BTW, nice Due pinout diagram you have there :)

______
Rob
Rob Gray aka the GRAYnomad www.robgray.com

JChrispy58

Looks like i'm using a voltage divider....Thanks Rob for your help.

Go Up