Testing the sound modules started by gathering the modules and a power supply. The power supply was capable of outputting 3.3VDC and 5.0VDC. Both modules were given 3.3V and the same results were replicated from the last test where the first module acted faulty but the second module operated as expected. To test the functions of the chips and the board the chips (ISD1820PY) were swapped. The fault was found on the first board since both chips performed as expected in the second board. This also suggested the first chip was not damaged by the 5.0V. To test this the second board had 5.0V applied and all functions tested well. A video was made demonstrating the operation of the board at 5.0V.
The rest of the posts for this project have been arranged by date.
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Both modules given power
Sound module testing
- Buy Switches with rollers
- Install Switches
Test ISD1820PY chip Test for correct GND/Vcc hookup Test with 5VDC
- Create circuit board
- Designate all components
- Design schematic of components
- voltage regulators
- line level converters
- 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
- 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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