Go to advanced search

by jscax
Mon Nov 27, 2017 5:36 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO Security
Replies: 28
Views: 7631

Re: GPIO Security

is there a way to "create" /dev/gpiomem given I only have /dev/mem ?

thank you
by jscax
Fri Oct 06, 2017 8:14 pm
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5976

Re: Powering Pi Zero with a 240V AC - 5V DC module

Ok guys, I've 40-60 days to think about this as the goods are shipping from China. I confirm I'm completely fine with 220-240V AC and I don't encourage anyone to go through my same path. I agree that the bulky socket power charger should be easier to manage and I will try to fit everything with the...
by jscax
Fri Oct 06, 2017 3:47 pm
Forum: Beginners
Topic: Multiple I2C sensors Pi Zero
Replies: 5
Views: 4271

Re: Multiple I2C sensors Pi Zero

Ok so: I2C is a bus where I can address multiple devices. Great. How does it work when it comes to the wiring scheme? How will this work without the expansion? I connect the first I2C sensor to the GPIO then I can cascade another sensor connecting it at the pins of the first I2C sensor, correct? tha...
by jscax
Fri Oct 06, 2017 10:06 am
Forum: Beginners
Topic: Multiple I2C sensors Pi Zero
Replies: 5
Views: 4271

Multiple I2C sensors Pi Zero

Hi all, I'm not a beginner I'm a complete newbie. So let's say I want to connect 3-4 I2C sensors to Pi Zero, do I need any expansion? My guess is: yes. https://www.aliexpress.com/item/PCF8574-IO-Expansion-Board-I-O-Expander-I2C-Bus-Evaluation-Development-Module/1893663874.html Is this something that...
by jscax
Fri Oct 06, 2017 9:26 am
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5976

Re: Powering Pi Zero with a 240V AC - 5V DC module

Ok guys, I've 40-60 days to think about this as the goods are shipping from China. I confirm I'm completely fine with 220-240V AC and I don't encourage anyone to go through my same path. I agree that the bulky socket power charger should be easier to manage and I will try to fit everything with the ...
by jscax
Thu Oct 05, 2017 3:28 pm
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5976

Re: Powering Pi Zero with a 240V AC - 5V DC module

The AC wire is coming from inside the wall in the very same small box where there will be the Pi Zero too
by jscax
Thu Oct 05, 2017 2:02 pm
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5976

Re: Powering Pi Zero with a 240V AC - 5V DC module

The point is that I have to put everything in a very little box where I don't have enough room for the socket female and the bulky electric socket charger. And I can't put it outside of the box as I am on a white vertical wall. It seemed a "obvious" solution to me, as all we need is 5V DC ...
by jscax
Thu Oct 05, 2017 9:34 am
Forum: Beginners
Topic: Powering Pi Zero with a 240V AC - 5V DC module
Replies: 14
Views: 5976

Powering Pi Zero with a 240V AC - 5V DC module

Hi, I'm completely new to Rasp world. Is anyone using a 240V AC to 5V DC power module like this: https://www.aliexpress.com/store/product/3pcs-AC-DC-5V-2-5A-Switching-Power-Supply-Module-5V-2500MA-Bare-Circuit-Board-for/1829717_32760575162.html?isOrigTitle=true I would like to power a Raspberry Pi Z...

Go to advanced search