Search found 25 matches

by SP33
Tue Jun 28, 2016 12:49 pm
Forum: Guides
Topic: PWM Audio Guide
Replies: 77
Views: 70727

Re: PWM Audio Guide

Please don't kill me if this is a stupid question... does it have to be a 0.033uF capacitor? Only thing I could get was a 0.047uF. I believe it would be fine but I am not quite sure. I do know adafruit used a 0.01uF and claimed they would just have a higher cutoff frequency with nearly no audible c...
by SP33
Sat Jun 25, 2016 9:31 pm
Forum: RetroPie
Topic: delete files
Replies: 2
Views: 1122

Re: delete files

Code: Select all

rm -rf foldername
will delete a folder and all its subfolders without asking for further permission

Code: Select all

rm -r foldername/*
should delete all the files in a folder
by SP33
Sat Jun 25, 2016 5:53 am
Forum: Guides
Topic: PWM Audio Guide
Replies: 77
Views: 70727

Re: PWM Audio Guide

@joe7dust Just use the same ground you used for the audio filter you just made, you can solder a wire where you attached the ground and to your audio plug.
by SP33
Fri Jun 24, 2016 6:26 pm
Forum: Guides
Topic: PWM Audio Guide
Replies: 77
Views: 70727

Re: PWM Audio Guide

So say i'm doing mono sound, is this the code i would use? dtoverlay=pwm-1chan,pin=18,func=2 (for left channel?) vs dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4 I have not tried mono sound myself yet but from my own tests, pin 18 was outputting in the right channel so I believe pin2 and func2 ...
by SP33
Sat Jun 18, 2016 8:50 pm
Forum: General Hardware
Topic: Charging two batteries vs one
Replies: 0
Views: 859

Charging two batteries vs one

So I have this portable charger I want to salvage for my project, the only issue is it is using two 2500mah batteries in parallel and I don't have the space for both of them in the case. Does anyone know if I could desolder one of these batteries and have the charging circuit run as normal? I'm not ...
by SP33
Mon Jun 13, 2016 2:20 am
Forum: General Chat (Game Boy Zero)
Topic: Retropie, white screen
Replies: 18
Views: 6818

Re: Retropie, white screen

I think you have both the HDMI plugged in as well as composite, in that case it may be that you can't use HDMI and Composite at the same time, HDMI initially takes priority over composite at boot. In my case I had to unplug the HDMI cable before booting up the pi if I wanted Composite and if I wante...
by SP33
Tue Jun 07, 2016 9:06 pm
Forum: Announcements
Topic: 3D Printing Forum
Replies: 28
Views: 16125

Re: 3D Printing Forum

@Wermy Do you know of the button well measurements or where I can get them? I might need to make some for my project as well.
by SP33
Mon Jun 06, 2016 8:32 pm
Forum: Guides
Topic: PWM Audio Guide
Replies: 77
Views: 70727

Re: PWM Audio Guide

So, this is interesting. I'm bypassing the circuit completely. I'm going GPIO13 to Audio + on my Audio Amp. An Audio - is going to GND. And the audio is totally clean. (With the circuit, there was a little bit of 60hz hum). So, do we even need the low pass filter? It's not as though we are even goi...
by SP33
Mon Jun 06, 2016 5:51 pm
Forum: Guides
Topic: PWM Audio Guide
Replies: 77
Views: 70727

Re: PWM Audio Guide

Hey thanks! I'll be covering this in my next guide, I'll definitely point people here as well. :) Sounds great, let me know if anything should be changed to help streamline everything! I just finished a mono version of this circuit and it wasn't working until I reversed the GPIO and GND pins going ...
by SP33
Sun Jun 05, 2016 11:29 pm
Forum: General Chat (Game Boy Zero)
Topic: Help with PWM audio
Replies: 9
Views: 3072

Re: Help with PWM audio

If you would like to take a crack at it here is my guide. Hopefully it helps! If you still have issues let us know! http://www.sudomod.com/forum/viewtopic.php?f=22&t=480 I made a simplified schematic for anyone who might not understand the original schematic. @1461748123 did a great job with his, yo...