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Header 1   In this post, I will be talking about my switches which are done with an interrupt on Arduino Mega's pin#2, and just of keeping my head on straight the interrupt service routines name is isr2. First, let me digress. The Fuel Load Indicator has two (2) switches and each has two (2) positions for a total of four (4) switch selections. So how do I generate the interrupt? One way is to connect the four wires (a, b, c, d) to the Arduino and then use a quad 2-input or-gate, SN74LS32. ...
Why do I say aftermath? Well to put it simply it might have been a bit of an overreach.  I spent more than a few days trying in vain to get the display board pins identified.  So here are some videos for the Fuel Load Indicator.  First up are the function switches. These three images are  from  "Embed With Elliot: Debounce Your Noisy Buttons"   There is one more board and that is the Signal Conditioner. This is a small board that connects to the switches and ...
Header Pins Mapping to Arduino Mega   Header Pins Color Signal Mega Pins Header Pins Color Signal Mega Pins Pins.h pinModes.h 1 RED Power Ext 30 BLACK Ground Ext #define INT5 5   #define SDA 20 #define SCL 21   #define CE1 44 #define CE2 36 #define CLK1 33 #define CLK2 34 #define CLS1 41 #define CLS2 37 #define FL1 46 #define FL2 45 #define RD1 35 #define RD2 43 #define RST1 32 #define RST2 47 #define WR 42 #define MISO 50 #define MOSI 51 #define SCLK52 #de ...
Indicator, Slip and Turn Manufacture: R.C. Allen Part Number: M3520-4 Connector: Connector Mate: MS3106-14S-2S Pin A: +28v Pin B: -28v Pin C: +5v (lighting) Pin D: -5V Pin E: Spare Note: This unit will have to be modified as the indicator is gyroscopically driven.  most likely this is a candidate for a servo. ...