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
- 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 converters opto-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
A list showing of all the final posts of COMPLETED projects.
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