Pages: 1 2 [3]   Go Down
Author Topic: Solution for the 5V vs 3.3V problem  (Read 12801 times)
0 Members and 1 Guest are viewing this topic.
nr Bundaberg, Australia
Offline Offline
Tesla Member
***
Karma: 129
Posts: 8530
Scattered showers my arse -- Noah, 2348BC.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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
Logged

Rob Gray aka the GRAYnomad www.robgray.com

Offline Offline
Full Member
***
Karma: 8
Posts: 176
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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
Logged

Please don't PM me asking for help. Ask questions in the forum.

nr Bundaberg, Australia
Offline Offline
Tesla Member
***
Karma: 129
Posts: 8530
Scattered showers my arse -- Noah, 2348BC.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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 smiley

______
Rob
Logged

Rob Gray aka the GRAYnomad www.robgray.com

USA
Offline Offline
Newbie
*
Karma: 0
Posts: 3
Be an engineer they said, it will be fun they said.
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Pages: 1 2 [3]   Go Up
Jump to: