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Adafruit RasPi Perma Proto Full #3

(Dual, 4-bit or 8-bit, I2C to LCD Parallel Interface + Serial Port)

Contents

  1. Adafruit RasPi Perma Proto Full #3
    1. Schematic
    2. Build Snapshots
    3. Original Tests (2014)
    4. Further Tests (2017)

Schematic

I2C-to-LCD-4bit-or-8bit-Par.png
(NB. Extra, external, I2C connector not shown)

Build Snapshots

P1000674rcs.JPG

P1000675rcs.JPG

P1000676rcs.JPG

P1000677csa.jpg

P1000707cs.JPG

P1000709rcsa.jpg

P1000710cs.JPG

P1000723rcs.JPG

P1000734cs.JPG

P1000738rcs.JPG

P1000773cs.JPG

Original Tests (2014)

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P1000828rcs.JPG
P1000831rcs.JPG
Effect of a "too short" E-strobe in 4-bit mode 

dual_lcd_i2c4-8bit_demo.c Version 0.01 {Exp}, [20/11/2014], (c) F_Trevor_Gowen
                <--| Package i2c_spi_chips_0.0 |-->
Usage dual_lcd_i2c4-8bit_demo  [Options]
Options: -a arg_filename[.arg],
         -A8   {use 8-bit interface via gpio A - default},
         -B4   {use 4-bit interface via gpio B},
         -BLn  {force BackLights off (n=0) or on (n=1)},
         -E    {Echo command-line arguments},
         -I    {Inquire about i2c devices},
         -0802 {LCD display type 0802},
         -1602 {LCD display type 1602 - default},
         -2004 {LCD display type 2004},
         -IG   {Inquire about i2c devices & Gpio readall},
         -P    {Preload lcd iface's},
         -ST   {Strobe Test*},
         -F8T  {Func set init 8-bit Test* - implies -A8},
         -WDT  {Write Data Test*},
         -WRT  {Write Register Test*},
               {*NB: LED Test board req'd with -S},
         -CH   {Clear display & return Home - implies -W},
         -F4T  {Func set init 4-bit Test - implies -B4 & -W},
         -WLT  {Write Line info. Test - implies -W},
         -WMT  {Write Message Test - implies -W},
         -Q    {Quiet - default},
         -S    {use System call methods - default},
         -T    {using LED Test board},
         -V    {Verbose},
         -W    {use Wiring pi i2c methods},
         -X    {eXecute demonstration}.

Further Tests (2017)

(Including with a "newly available" 1604 LCD)

Set 1: 1602 4-Bit, 1604 8-Bit, 2004 4-Bit (Funduino)

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Set 2: 1604 4-Bit, 1602 8-Bit, 2004 4-Bit (Funduino)

P1040811gbrcs.JPG

P1040816rrrcs.JPG

P1040817rcs.JPG

P1040815rcs.JPG

P1040824rrcs.JPG

P1040819cs.JPG

P1040818rcs.JPG

Set 3: 2004 4-Bit, 1602 8-Bit, 1604 4-Bit (Funduino)

P1040825bgrs.JPG

P1040834bgs.JPG

P1040827cs.JPG

P1040828rcs.JPG
P1040829rcs.JPG

P1040830cs.JPG

P1040833rcs.JPG 

pi@raspiP3B16Gb:~/i2c_spi_chips-0.0 $ ./src/dual_lcd_i2c4-8bit_demo
dual_lcd_i2c4-8bit_demo.c Version 0.02 {Exp}, [26/06/2017], (c) F_Trevor_Gowen
                <--| Package i2c_spi_chips_0.0 |-->
Usage dual_lcd_i2c4-8bit_demo  [Options]
Options: -a arg_filename[.arg],
         -A8   {use 8-bit interface via gpio A - default},
         -B4   {use 4-bit interface via gpio B},
         -BLn  {force BackLights off (n=0) or on (n=1)},
         -E    {Echo command-line arguments},
         -I    {Inquire about i2c devices},
         -0802 {LCD display type 0802},
         -1602 {LCD display type 1602 - default},
         -1604 {LCD display type 1604},
         -2004 {LCD display type 2004},
         -IG   {Inquire about i2c devices & Gpio readall},
         -P    {Preload lcd iface's},
         -ST   {Strobe Test*},
         -F8T  {Func set init 8-bit Test* - implies -A8},
         -WDT  {Write Data Test*},
         -WRT  {Write Register Test*},
               {*NB: LED Test board req'd with -S},
         -CH   {Clear display & return Home - implies -W},
         -F4T  {Func set init 4-bit Test - implies -B4 & -W},
         -WLT  {Write Line info. Test - implies -W},
         -WMT  {Write Message Test - implies -W},
         -W80T {Write 80 characters Test - implies -W},
         -Q    {Quiet - default},
         -S    {use System call methods - default},
         -T    {using LED Test board},
         -V    {Verbose},
         -W    {use Wiring pi i2c methods},
         -X    {eXecute demonstration}.

pi@raspiP3B16Gb:~/i2c_spi_chips-0.0 $ ./src/lcd_fi2c_demo
lcd_fi2c_demo.c Version 0.07 {Exp}, [29/06/2017], (c) F_Trevor_Gowen
                <--| Package i2c_spi_chips_0.0 |-->
Usage lcd_fi2c_demo  [Options]
Options: -a arg_filename[.arg],
         -dmsg 's' {Display a MeSsaGe 'like_this_one'... - implies -W},
         +S        {... and Scroll right},
         -E    {Echo command-line arguments},
         -I    {Inquire about i2c devices},
         -0802 {LCD display type 0802},
         -1602 {LCD display type 1602 - default},
         -1604 {LCD display type 1604},
         -2004 {LCD display type 2004},
         -CH   {Clear display & return Home - implies -W},
         -WLT  {Write Line info. Test - implies -W},
         -WMT  {Write Message Test - implies -W},
         -W80T {Write 80 characters Test - implies -W},
         -F4T  {Func set init 4-bit Test*},
         -P    {Preload lcd fi2c},
         -ST   {Strobe Test*},
         -WDT  {Write Data Test*},
         -WRT  {Write Register Test*},
               {*NB: LED Test board req'd with -S},
         -Q    {Quiet - default},
         -S    {use System call methods - default},
         -T    {using LED Test board},
         -V    {Verbose},
         -W    {use Wiring pi i2c methods},
         -X    {eXecute demonstration}.

Check1: Thu Jun 29 14:34:09 2017
Check2: 14:34:11

2025-04-04 21:49