microDRUM

Il forum di microDRUM

32 bit Processors

Re: 32 bit Processors

Postby WesleyS » 27/10/2015, 4:51

Here is a PCB I designed for the Teensy. No one has commented on it and I really want someone to look it over and make sure I didn't make any dumb mistakes.
https://dl.dropboxusercontent.com/u/88643852/MD%20PCB%20with%20mux%27s%20teensy_pcb.png

Here it is with the jumpers on top:
https://dl.dropboxusercontent.com/u/88643852/MD%20PCB%20with%20mux%27s%20teensy_pcb%20JUMPER.png
WesleyS
 
Posts: 176
Joined: 13/01/2014, 4:42

Re: 32 bit Processors

Postby WesleyS » 11/11/2015, 9:37

This is probably the final revision of the Teensy board before I get it made. If anyone could check it I would really, really, appreciate it. I'd hate to lose $30 and have 10 useless boards. I added a circuit for a 595 LCD breakout and a board for the buttons. I will cut them myself, as it saves a lot of money.
https://dl.dropboxusercontent.com/u/88643852/MD%20PCB%20with%20mux%27s%20teensy_SMD_w_595_pcb.png
The fritzing file: https://dl.dropboxusercontent.com/u/88643852/MD%20PCB%20with%20mux%27s%20teensy_SMD_w_595.fzz
WesleyS
 
Posts: 176
Joined: 13/01/2014, 4:42

Re: 32 bit Processors

Postby microdrum » 05/12/2015, 9:21

Looking at your diagram I arose a doubt. The connectors are 4x2 for the jack, so you do not put Vcc and GND. For Vcc I can understand but the GND? what to connect the GND jack?
User avatar
microdrum
Amministratore
 
Posts: 175
Joined: 28/10/2010, 9:26

Re: 32 bit Processors

Postby WesleyS » 06/12/2015, 3:42

Above the 4x2 headers i have a 2x1 header that has Vcc and GND. I made it for a Hihat controller. On my microDRUM I tied all jack grounds together, so I only need one ground to the PCB. I understand what you mean though. There are also two GND pins below the 4851 (for additional multiplexer boards) or whatever else you'd like. Plus I have a 6x1 of digital GND in the top right corner. Should I move the grounds?
https://dl.dropboxusercontent.com/u/88643852/GND.png
WesleyS
 
Posts: 176
Joined: 13/01/2014, 4:42

Re: 32 bit Processors

Postby Marlowe » 27/10/2016, 17:30

Does the teensy 3.1 work the same with the schematic diagram that you used for your original how to build post? Im trying to wrap my brain around this, because i want to build microdrum, but seems like teensy is better than arduino, so i would like to build with teensy. i would like to just use a breadboard, no jacks just hard wire the piezos for now, and be able to have up to 48 inputs with the multiplexers. Also, could i just use the V0.8 pcb with teensy? if so, is there a kit that includes all the multiplexers, and resistors needed to work?
Marlowe
 
Posts: 1
Joined: 25/10/2016, 0:08

Re: 32 bit Processors

Postby WesleyS » 29/03/2017, 15:32

Sorry to not reply for so long, but let me see if I can answer your questions.
Yes it does work with the original diagram, pins 2,3, and 4 for the mux's and A0-A5 for the analog inputs. That's the most basic configuration(no screen, buttons, or add-ons) and will work just fine. Everything else has multiple options for you to choose from, and you should choose what best suits you. Soon I'll do a post on how to set up a Teensy just like I did for the Arduino, and go through the options I've added. As for which PCB to use, I don't think the v0.8 would work, but the v0.7 (on the downloads page) could be easily modified to work. Hope this helps!
WesleyS
 
Posts: 176
Joined: 13/01/2014, 4:42

Previous

Return to DIY

Who is online

Users browsing this forum: No registered users and 1 guest

cron