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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 13 |
1 files changed, 10 insertions, 3 deletions
@@ -1,5 +1,5 @@ -# PiTerm1982 -Convert 80s style interface ( 8031 based ADP Product: chicklet keyboard and 2x20 lcd ) to pi zero based terminal using i2c based io expanders. +# PiTerm1986 +**GOAL:** Convert 80s style user interface ( 8031 based ADP Product: chicklet keyboard and 2x20 lcd ) to pi zero based terminal using i2c based io expanders.   @@ -7,7 +7,7 @@ Convert 80s style interface ( 8031 based ADP Product: chicklet keyboard and 2x20   -Looking under the keyboard membrane and tracing the connectors we can get the following key map. +Looking under the keyboard membrane and tracing the connectors we can get the following key map under a 4x12 array (16 pins). ``` 0123456789A B @@ -17,7 +17,14 @@ Looking under the keyboard membrane and tracing the connectors we can get the fo 2) 0912345678<BS> <START> 2) POQWERTYUI<CAN><DIAL> ``` +### Keyboard  +For this we look at the AW9523 GPIO expander with 16 pins of io. + +### LCD/VFD + +Since the LCD is a 5v circuit requiring either 8 or 12 pins we look at the Microchip MCP23017 on the Adafruit GPIO Expander Bonnet. + |