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by VeryNoob
Thu Mar 15, 2018 11:04 pm
Forum: General discussion
Topic: 3B+ PEN & RUN Header
Replies: 13
Views: 18364

Re: 3B+ PEN & RUN Header

Thanks guys. This is actually the feature I am most excited about. Not that the speed boost on the CPU and networking isn't nice too.
by VeryNoob
Thu Mar 15, 2018 9:51 pm
Forum: General discussion
Topic: 3B+ PEN & RUN Header
Replies: 13
Views: 18364

Re: 3B+ PEN & RUN Header

Brilliant. I'm thinking an ATTiny would be perfect to control this. Run it from the 5v line which will still have power, check that the TX line is high, and if it's been low for a minute or so, cut power. Push a button to disconnect from ground and let it boot up.
by VeryNoob
Wed Mar 14, 2018 11:58 pm
Forum: General discussion
Topic: 3B+ PEN & RUN Header
Replies: 13
Views: 18364

3B+ PEN & RUN Header

The 3B+ seems to have a change to the RUN header. RUN I assume has the same functionality, in that it's pulled high to allow the Raspberry Pi to run, and pulled low to reset. This comment on the announcement blog page seems to indicate that PEN can be used for shutdown. Will pulling it low put it in...
by VeryNoob
Wed Mar 14, 2018 3:18 pm
Forum: General discussion
Topic: New Raspberry Pi model 3B+ 1.4 GHz, 330Mbit Ethernet, 802.11ac, PoE
Replies: 376
Views: 71036

Re: New Raspberry Pi model 3B+ 1.4 GHz, 330Mbit Ethernet, 802.11ac, PoE

Does the new power management setup have the ability to turn off the pi? So if you Sudo shutdown it drops into super low power mode? And maybe short the reset header to turn it back on?
by VeryNoob
Tue Sep 05, 2017 6:25 am
Forum: Beginners
Topic: MOSFET & Current Limiting Resistor
Replies: 1
Views: 536

MOSFET & Current Limiting Resistor

Hi all, if I want to use a GPIO to drive a N-Channel MOSFET ( https://www.adafruit.com/product/355 - Can be driven from 3.3v). I am going to use it to drive a couple of 12v fans (5amp max, probably less). I plan on having 12v go in to a buck to drop it to 5v to power the Pi. Run the 12v to the +ve o...
by VeryNoob
Fri May 05, 2017 12:47 am
Forum: AIY Projects
Topic: STICKY: Welcome to the AIY Projects forum!
Replies: 42
Views: 43813

Re: Welcome to the AIY Projects forum!

For those of us who go for the electronic version of the magazine (it's pricey to get in my country), do we have a estimate on when they might get sold as a board only?
by VeryNoob
Fri May 05, 2017 12:45 am
Forum: AIY Projects
Topic: AIY Voice HAT Hardware Reverse Engineering
Replies: 19
Views: 7347

AIY Voice HAT Hardware Reverse Engineering

I'm hoping that as a group we can reverse engineer the HAT, so we can come up with other uses for it. U1) The audio chip is an i2s DAC and Amplifier. It looks suspiciously like the Adafruit MAX98357 breakout. But there is a stereo output, which the MAS98357 doesn't have. Drivers 0-3 look like they h...
by VeryNoob
Wed Jan 18, 2017 3:59 am
Forum: General discussion
Topic: On the next version of the Zero (without adding cost)
Replies: 48
Views: 8039

Re: On the next version of the Zero (without adding cost)

I'd love to have the header holes for the power in (so I don't bypass the fuse, etc) and for the USB. It would make stacking Mini-Hats (caps) on it a lot more useful. You could have USB hub-caps, USB wifi-caps USB sound cards. When I build a project, one of my (minor) gripes is having all the cables...
by VeryNoob
Sun Sep 14, 2014 1:57 am
Forum: HATs and other add-ons
Topic: Is this how the Pi-Supply Works?
Replies: 10
Views: 2560

Re: Is this how the Pi-Supply Works?

These days most designers simply use a power control IC. This is an interesting idea. Don't suppose anyone has a link to more information? I'm trying to build my own version that sits on a GPIO expansion board, along with a IR receiver and some power circuitry to back-feed the RPi. So I can have a ...
by VeryNoob
Sat Sep 13, 2014 11:04 pm
Forum: HATs and other add-ons
Topic: Is this how the Pi-Supply Works?
Replies: 10
Views: 2560

Re: Is this how the Pi-Supply Works?

Good write up red. Are you sure they stole you idea? There kickstarter started on on the 11 Feb 2013, your write up is 21 Feb 2013.

I will admit, the circuit diagram looks very similar.
by VeryNoob
Sat Sep 13, 2014 9:03 am
Forum: HATs and other add-ons
Topic: Is this how the Pi-Supply Works?
Replies: 10
Views: 2560

Re: Is this how the Pi-Supply Works?

anyone?
by VeryNoob
Thu Sep 11, 2014 2:39 am
Forum: HATs and other add-ons
Topic: Is this how the Pi-Supply Works?
Replies: 10
Views: 2560

Is this how the Pi-Supply Works?

First of all, I highly recommend that if you have a Raspberry Pi system that you want to be able to turn off, you get yourself a Pi-Supply . They are brilliant. I have one for each of my raspberry pi's. But I am a curious boy, and wondered how it works. So I've taken there open schematics, and drawn...
by VeryNoob
Sun Jul 27, 2014 12:36 pm
Forum: Graphics, sound and multimedia
Topic: Lunchbox Internet Radio Guide
Replies: 10
Views: 10019

Re: Lunchbox Internet Radio Guide

I've also moved it into something a little nicer

Image
http://oi61.tinypic.com/350uef7.jpg

GRUNDTAL From Ikea
by VeryNoob
Sun Jul 27, 2014 12:25 pm
Forum: Graphics, sound and multimedia
Topic: Lunchbox Internet Radio Guide
Replies: 10
Views: 10019

Re: Lunchbox Internet Radio Guide

Hey "your_mum", it sounds like you are doing something interesting, but I'm not willing to download a zip file from a hosting site. If you post your code I might have a look "elParaguayo", if it's soft plastic, then just a razor and a steel ruler. Make sure you have the ruler over the bit you don't ...
by VeryNoob
Tue Jun 03, 2014 11:30 pm
Forum: Python
Topic: Short / Long Press GPIO
Replies: 8
Views: 9310

Re: Short / Long Press GPIO

Woo hoo. Got it working. It's a little rough around the edges. The buttons aren't always super responsive, but it works. :D Eventually I will get it set up with only three switches. Previous On (via a DPST. One pole to the GPIO, one to Pi-Supply), Play/ Stop and long press shutdown Next I'm going to...
by VeryNoob
Tue Jun 03, 2014 1:30 pm
Forum: Python
Topic: Short / Long Press GPIO
Replies: 8
Views: 9310

Re: Short / Long Press GPIO

this sort of works A problem is that if you pause the music, then you can't hit play for a while (3 seconds). Even if you wait, sometimes the play buttons doesn't work, and you have to wait another 3 seconds. I think it's something to do with the polling interval, but I could be wrong. This will be ...
by VeryNoob
Mon Jun 02, 2014 1:56 pm
Forum: Python
Topic: Short / Long Press GPIO
Replies: 8
Views: 9310

Re: Short / Long Press GPIO

Hi Steve,

Good point about resetting J. Can you post the code that you used for your music server so that I can have a look at it?
by VeryNoob
Mon Jun 02, 2014 1:08 pm
Forum: Python
Topic: Short / Long Press GPIO
Replies: 8
Views: 9310

Re: Short / Long Press GPIO

I've tried a lot of things, but below is what seemed to get the closest. Rather than shutdown (which was painful, it kept shutting down the machine), I had a long press of the play button stop the music. I looked at the RasPiCamcorder scripts, but it confused me. Can anyone tell me what I am doing w...
by VeryNoob
Sun May 25, 2014 8:18 am
Forum: Python
Topic: Short / Long Press GPIO
Replies: 8
Views: 9310

Short / Long Press GPIO

I've done a write up on my internet radio here . I want to cut the number of buttons down to 5 (On, prev, next, play, stop/off). Basically I want it so that if I hold down the off button for say 5 seconds, it shuts down. Mostly to stop accidental shutdowns. I tried adding it using the idea from here...
by VeryNoob
Sun May 25, 2014 8:15 am
Forum: Graphics, sound and multimedia
Topic: Lunchbox Internet Radio Guide
Replies: 10
Views: 10019

Re: Lunchbox Internet Radio Guide

Cleaned up a bit #!/usr/bin/python # Script for Raspberry Pi Internet Radio #import import RPi.GPIO as GPIO import time import os # Define GPIO to LCD mapping LCD_RS = 25 # LCD Pin 4 LCD_E = 8 # LCD Pin 6 LCD_D4 = 4 # LCD Pin 11 LCD_D5 = 10 # LCD Pin 12 LCD_D6 = 9 # LCD Pin 13 LCD_D7 = 11 # LCD Pin ...
by VeryNoob
Sun May 11, 2014 11:48 am
Forum: Graphics, sound and multimedia
Topic: Pi WiFi Radio ... again
Replies: 9
Views: 7926

Re: Pi WiFi Radio ... again

I have a write up on my radio, that shows the output of the MPC showing the station data. It's not for an i2c connection though. http://www.raspberrypi.org/forums/viewtopic.php?f=38&t=76705 I've also built Sheldon's GPIO version. I want to combine ideas from the two. I want Sheldon's loading of the ...
by VeryNoob
Thu May 08, 2014 4:55 pm
Forum: Graphics, sound and multimedia
Topic: Lunchbox Internet Radio Guide
Replies: 10
Views: 10019

Lunchbox Internet Radio Guide

It took me a while to build this, as I have never programmed in anything other than BASIC, and I've never used Linux. The write up isn't as detailed as I'd like, but maybe if I get time, I'll come back to it, and make it more detailed. What I've made is a radio with 6 buttons and a 20x4 LCD screen. ...
by VeryNoob
Thu Jun 13, 2013 12:55 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Phantom Button Presses
Replies: 10
Views: 3518

Re: Phantom Button Presses

YAY! IT WORKED! Just thought I would follow up for the fellow newbies who found this thread. It worked. And I also wanted to thank you guys for your help. This is my little test code. #!/usr/bin/env python from time import sleep import os import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(2, ...
by VeryNoob
Wed Jun 12, 2013 12:09 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Phantom Button Presses
Replies: 10
Views: 3518

Re: Phantom Button Presses

Thanks for your help. I have no issue using pull up or pull down. In an earlier thread I was going in a certain direction, but then to make the humble pi layout work, I swapped some input switches to GPIO2&3 to make the layout work better. I've attached my new layout, but given the removal of the 1k...

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