Tagged Questions
3
votes
3answers
1k views
I2C: 3.3V and 5V devices without level-shifting on 3.3V-bus?
do I really need a level-shifter if I use 5V-powered devices on an I2C-bus that has pull-ups to 3.3V?
In my understanding the devices will only pull the lines (SDA, SCL) low (to ground) and never ...
4
votes
3answers
4k views
Analog voltage level conversion (level shift)
I have a joystick that puts out analog voltage somewhere between 1.5V and 3.5V.
I want to transform this range of voltage to control a motor controller that takes analog voltage between 0V and 5V.
...
4
votes
3answers
613 views
How can I know if I'm safe from burning out my robot with more voltage?
I have a Wowwee animatronic robot that I've been tinkering with, with the goal of hooking my arduino up to it so that I can control it from my computer.
The problem is, using a multimeter, I've ...
1
vote
2answers
124 views
Flipping a signal
I've an input of two input lines, one being connected to ground and one carrying the signal (measured to ground). The output should be three lines with one being ground and the others measured in ...
0
votes
0answers
277 views
Is this buffer for protecting 3.3v logic from 9v power sane?
there. I'm playing with the idea of making a multi-interface for classic game controllers. I realize this is foolish, but I'm doing it anyway.
The interface connector between the system and the ...
