Switched to SSD1306 OLED. Now HiFiLOGIX.

CHANGELOG

@@ -1,5 +1,18 @@
 CHANGELOG:
 
+Version 0.1.4:
+
+	Main:
+		Project is now called HiFiLOGIX
+
+	Hardware:
+		Tied ULN2003/2803 ground to 595's enable line
+		Replaced 1602 display with SSD1306 128x32 OLED
+		
+	Software:
+		Added code to drive OLED display.
+		Removed 1602 display code.
+
 Version 0.1.3:
 
 	Hardware:

README.md

@@ -1,4 +1,5 @@
-Denon PMA-770 (and others) Arduino Control
+![HiFiLOGIX](images/logo.jpg "HiFiLOGIX")
+Arduino Control for Your Vintage Stereo
 
 # History
 
@@ -9,11 +10,18 @@ Denon PMA-770 (and others) Arduino Control
 30-Dec-2019: Version 0.1.2 - Controls ShiftReset and OutputEnable on 595 to prevent random start-up state.
 30-Dec-2019: Version 0.1.3 - Removed ShiftReset function. Replaced with reset circuit onboard.
 01-Jan-2020: Added license, media, and proper README.
+04-Jan-2020: Version 0.1.4 - Changed project name. Removed 1602 display code. Added 128x32 OLED code
 ````
 
 
 # About
 
+HiFiLOGIX is an Arduino Sketch to add modern logic control to vintage analog stereo systems. It is being
+built and developed around my own personal vintage amplifier; the Denon PMA-770. It is written by a guy
+who knows a lot about analog audio circuits and virtually nothing about Arduino.
+
+# About the PMA-770 & Why This Exists
+
 The Denon PMA-770 is a high-end integrated amplfier from the early 80's capable of the usual 100 watts into
 8 ohms; and somewhere in the neighborhood of 120 to 140 in to a 4 ohm load. It's a DC coupled amplifier of
 "Direct-A" topology. It's got 3 pairs of output transistors, no capacitors in the audio path, and it sounds
@@ -38,7 +46,7 @@ remote control function.
 
 # Hardware
 
-The basic idea is parallel the actuator contacts of 5 DPDT (or DPST) relays and flip them on one at a time (two
+The basic idea is parallel the actuator contacts of DPDT (or DPST) relays and flip them on one at a time (two
 for phono).
 
 [![Schematic of hardware](/images/schematicsmall.png)](/images/schematic.png)
@@ -67,22 +75,26 @@ the phono-stage.
 An 1838 IR sensor is used for remote control function. An additional utility may be written to help with this going forward
 but it's possible I may wind up writing a routine for "self-programming". 
 
-Currently I am using an I2C 1602 display just for development purposes. This will be replaced with a 128x32 I2C OLED display
-in the future. This display is just a little larger than the display in the Denon; so it shouldn't be any issue to mount it
-and format everything to appear in the actual visible space. It is not shown on the schematic; however it is just connected
-to 5V, GND, SDA, and SCL lines. 
+As of Version 0.1.4 we now support the SSD1306 based 128x32 OLED Display.
 
 In the future I will be adding some kind of NVRam storage. This will facilitate actually storing configuration options, remote
 programming codes, and to store the last-used input. I may also use this to store graphic data for the OLED display to
 emulate the original segmented font display of the Denon. 
 
+# Software
+
+This sketch requires the following libaries:
+	- IRRemote (https://github.com/z3t0/Arduino-IRremote)
+	- U8G2 Display Driver (https://github.com/olikraus/u8g2)
+
+Please install them via Library Manager or however you install libaries. Check indvidual project pages for LICENSE info.
+
 # Media
 
 [![Picture of prototype rig](/images/prototype.jpg "Prototype")*Prototype & Development Build*
 
-This is a previous revision of the hardware before the power-on reset circuit was added to the 74HC595. The parallel data is 
-represented by the standard arrangement of LEDs with current-limiting resistors. This is literally all that's required during
-development since I'm already very familiar with the 2803 as a driver. 
+This is the most current prototype featuring a 128x32 OLED and a ULN2003 driving actual relays. It is known as hardware
+revision 1.3.
 
 I'm horrible at making videos in general...but I still made an attempt to show things off. Youtube embedding is apparently 
 broken and I don't feel like putting a gig worth of video in the repository, so you'll just have to use links.
@@ -91,6 +103,8 @@ broken and I don't feel like putting a gig worth of video in the repository, so
 
 [Now I've Got A Remote Control](https://www.youtube.com/watch?v=I30OaMii4l4)
 
+[OLED, Relay Control, and HiFiLOGIX] (https://youtu.be/vn3nhpWjckw)
+
 # License
 
 Copyright 2020 Jay Moore 

hifilogix.ino

@@ -1,28 +1,45 @@
 /*
-  PMA770Relay 0.1.3
+  HiFiLOGIX 0.1.4
 
-  dewdude@gmail.com - 30-12-2019
+  dewdude@gmail.com - 04-JAN-2020
   
  */
 #include <Wire.h>
-#include <LiquidCrystal_I2C.h>
+#include <U8g2lib.h>
 #include <IRremote.h>
 
+U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0); 
 
+// const char *inputs[] = {"TAPE-2","TAPE-1","AUX","TUNER","PHONO-2","PHONO-1"};
+
+// int i = 0;
 int latchPin = 11;
 int clockPin = 9;
 int dataPin = 12;
 int IRin = 7;
 int srEnable = 5;
 int matrix = A0;
-
 byte out = 0;
 int mx = 0;
 IRrecv remote(IRin);
 decode_results ircode;
 
-LiquidCrystal_I2C lcd(0x27,16,2);
-
+ void logo() {
+  u8g2.clearBuffer();
+  u8g2.setFont(u8g2_font_fewture_tr);  
+  u8g2.drawStr(15,14,"HiFiLOGIX");  
+  u8g2.setFont(u8g2_font_freedoomr10_tu);
+  u8g2.drawStr(14,30,"DENON PMA-770"); 
+  u8g2.sendBuffer();         
+  u8g2.setFont(u8g2_font_logisoso28_tr);
+ }
+ 
+/* void inputdisp() {
+  u8g2.clearBuffer();
+  u8g2.drawStr(x,30,inputs[i]);
+  u8g2.sendBuffer();
+ }
+*/
 void updateShiftRegister()
 {
    digitalWrite(latchPin, LOW);
@@ -40,57 +57,63 @@ void DontCrossTheStreams()
 void setTape2()
 {
   DontCrossTheStreams();
-  bitSet(out,7);
+  bitSet(out,6);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("TAPE-2   ");
+  u8g2.clearBuffer();
+  u8g2.drawStr(10,30,"TAPE-2");
+  u8g2.sendBuffer();
 }
 
 void setTape1()
 {
   DontCrossTheStreams();
-  bitSet(out,6);
+  bitSet(out,5);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("TAPE-1   ");
+   u8g2.clearBuffer();
+   u8g2.drawStr(10,30,"TAPE-1");
+   u8g2.sendBuffer();
 }
 
 void setAUX()
 {
   DontCrossTheStreams();
-  bitSet(out,5);
+  bitSet(out,4);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("AUX      ");
+   u8g2.clearBuffer();
+   u8g2.drawStr(32,30,"AUX");
+   u8g2.sendBuffer();
 }
 
 void setTune()
 {
   DontCrossTheStreams();
-  bitSet(out,4);
+  bitSet(out,3);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("TUNER    ");
+   u8g2.clearBuffer();
+   u8g2.drawStr(18,30,"TUNER");
+   u8g2.sendBuffer();
 }
 
 void setPh1()
 {
   DontCrossTheStreams();
-  bitSet(out,3);
-  bitSet(out,0);
+  bitSet(out,2);
+  bitSet(out,1);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("PHONO-1  ");
+   u8g2.clearBuffer();
+   u8g2.drawStr(1,30,"PHONO-2");
+   u8g2.sendBuffer();
 }
 
 void setPh2()
 {
   DontCrossTheStreams();
-  bitSet(out,3);
-  bitSet(out,1);
+  bitSet(out,2);
+  bitSet(out,0);
   updateShiftRegister();
-  lcd.setCursor(7, 1);
-  lcd.print("PHONO-2  ");
+   u8g2.clearBuffer();
+   u8g2.drawStr(1,30,"PHONO-1");
+   u8g2.sendBuffer();
 }
 
 void setup()
@@ -99,16 +122,11 @@ void setup()
   pinMode(dataPin, OUTPUT);  
   pinMode(clockPin, OUTPUT);
   pinMode(srEnable, OUTPUT);
+  u8g2.begin();
   remote.enableIRIn();
-  bitSet(out,5);
-  lcd.init();
-  lcd.backlight();
-  lcd.home();
-  lcd.setCursor(0, 0);
-  lcd.print("Denon PMA-770");
-  lcd.setCursor(0, 1);
-  lcd.print("Input: AUX");
-  updateShiftRegister();
+  logo();
+  delay(2000);
+  setAUX();
   digitalWrite(srEnable,LOW);
 }
 
@@ -144,4 +162,4 @@ if (remote.decode(&ircode)) {
     remote.resume();
     }
 delay(200);
-}
+}