The list of components was scrutinized and pared down by eliminating the components which were not necessary since the sound chips can operate at 5.0VDC. The 5.0 volt regulator chosen was replaced for a different model with a higher current and a different footprint. When the device was inserted into the schematic it was done improperly so the screenshots show an improperly wired voltage regulator. The line going directly to the Vcc pin of the Arduino should be removed or routed to RAW.
A header pin array (1x6) was added to allow different sound modules to be used in lieu of the onboard sound chips. The five signal wires and a ground were wired to the six pin header array. This should be changed to at least seven contacts so Vcc (5.0VDC) can also be provided. Even numbers are more common in headers so an eight position header will likely be used. The additional pin can be RAW power in case a supplementary sound module uses the incoming voltage.
A two-position header array was added to act as a switch for activating the, as of yet unprogrammed, alternative modes. Since this is being put on an analog input there should be a three-position to allow selection between ground or Vcc instead of adding a pull-up resistor.
The rest of the posts for this project have been arranged by date.
This blog, including pictures and text, is copyright to Brian McEvoy.
2015-01-27 (Tu)
Voltage regulator. Improperly wired
A header pin array (1x6) was added to allow different sound modules to be used in lieu of the onboard sound chips. The five signal wires and a ground were wired to the six pin header array. This should be changed to at least seven contacts so Vcc (5.0VDC) can also be provided. Even numbers are more common in headers so an eight position header will likely be used. The additional pin can be RAW power in case a supplementary sound module uses the incoming voltage.
Header pin. Probably too small
A two-position header array was added to act as a switch for activating the, as of yet unprogrammed, alternative modes. Since this is being put on an analog input there should be a three-position to allow selection between ground or Vcc instead of adding a pull-up resistor.
Auxiliary mode selector. Missing Vcc pin
Whole schematic. Lots of things wrong
To do:
- Buy Switches with rollers
- Install Switches
- Create circuit board
- Designate all components
- Design schematic of components
- voltage regulators
- Rename "Volume Control" to "Potentiometer"
line level convertersopto-Isolators- power terminals
- mother-daughter board connectors
device inter-connection signals- auxiliary posts for musical devices
- jumper for alt modes
and supporting components.- Design layout for single layer board
- Make a parts list with links
- Order parts list
- Print circuit board
- Install components
- Test + Verify
- Make all documentation public
Journal Page
A list showing of all the final posts of COMPLETED projects.
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All
information in this blog, or linked by this blog, are not to be taken
as advice or solicitation. Anyone attempting to replicate, in whole or
in part, is responsible for the outcome and procedure. Any loss of
functionality, money, property or similar, is the responsibility of
those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes
the intellectual property of Brian McEvoy. Any information contained
within these messages may be distributed or retained at the discretion
of Brian McEvoy. Any email sent to this address, or any email account
owned by Brian McEvoy, cannot be used to claim property or assets.
Comments
to the blog may be utilized or erased at the discretion of the owner.
No one posting may claim claim property or assets based on their post.
2015-01-27 (Tu)
Comments
Post a Comment