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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. ...
I have blogged about the Navigation Computer Display's Keyboard here. I was moving a 6821 PIA to its resting place and checked my Databooks where I found a pdf copy of the 6800 application manual. where they had a 4x4 keyboard interface. It was based around a row and column decoder but one cool thing added to it, and no diodes. And this has one more trick provided by the quad input NAND-Gate. Now an MCP23017 will work very nicely. It has interrupt outputs. But if you don't want to use this par ...
This is now round two. last night I wondered if I popped the MCP23017 or, is the scanner software bad? So the first this I did was to stick an MCP2327  on a breadboard and ran the scanner. It still said No I2C address found. As I relooked at the documentation and other websites I noticed that the device has a reset pin which is low-active, so without it connected to a pull-up it floats. This keeps the device in reset and nothing will work. Now the scanner is reporting I2C device at address ...
Well, I am working to get the Indicator done today or tomorrow, the slight tremors in my hands make Wire-Wrap a real pain. I will not get to a point where this will be buttoned-up, as there will be a lot of jumpers! I also have to trim down the interface board with my Dremel sander as it's not square to the mounted display board and the interconnect mounted on my interface vector board, which I thought was square, to begin with as Vector board has .1 by .1 hole spacing. Duh? Also when the displa ...
This picture on the left is just to remind you all of what I am trying to get working.  Each HDSP-2131 display has 24 pins that give you 48 pins to deal with. Now let us complicate the issue the pins come out on a 30-pin connector of which 4 are for power and ground. So now I have 28 pins for the interface. Other people have used similar displays ie  Wise Time with Arduino and others. Most of the implementations that I have seen use a Flip-Flop to load the characters, but why go to tha ...
Well, for starters there are problems with the Ardunio CAN bus library, as ANY node in the system can be a master or a slave. Currently, the Arduino CAN supports a SLAVE - MASTER, relationship. On the MCP2515_CAN module, you have the following connection on the header, plus outputs Hight and Low. So with what little time I have remaining. I just will be sending and receiving messages via the USB port using CANaerospace formatted messages. SIGNAL MODULE MEGA PIN ICSP Definition MOSI SI 51 4 Maste ...
I have been fighting to get my dual display board to function. The first attempt was to use a 50-pin breakout board: FAIL; The second attempt was to pin the ICs to the connector which is an IDC male with a notch (upper-left 1, lower-left, etc.  FAIL; Third and final attempt worked! I said the heck with their number scheme. So I went with an old standard row 1 upper-left pin 1  - 15; lower-right pin  16 - 30 which is now over pin 1.   So without further eloquence here is the 3 ...
phoenixcomm

The Lab: PanaVice

Posted by phoenixcomm Top Member Oct 16, 2020
Well, while at the local Goodwill Junk Store, everything under 7 pounds is $1.50 and over is well just $5.00, I found a PanaVice with a  vacuum base (model 380) with a set of PCB arms. Now the picture is from the internet. Mine is much worse for ware, the center bar is badly rusted even though the arms move freely. And at this point I have my doubts about the vacuum pad as well.  But since is was only 3 pounds my cost was $4.50 not bad for about a 90 dollar piece of kit. ~~Cris ...
As this node will be fairly busy, I have decided to implement this with interrupts.  The interrupts come from one of three (3) devices: CANaerospace Bus interface, USB term, one (1) of 2 switches, each with two(2) posisstions.   CANaerospace Bus: Hardware - Software Design: On of two switches, each with two positions. CANaerospace Bus TTY1(USB) This node can respond to messages for ID#: 0 IDS 668-675: Fuel Tank in Quantity (US GAL) 676-683: Fuel Tank Temperature (F) 1301: Tota ...
Statement: Driving Pinlight Lamps is very challenging. The design requirements are 4vdc @ 15ma per segment, if you are interested look here. So for the 7-segment displays total current is 7 x 15ma. or 105 ma. Now multiply that by 19 displays x 150ma or 1995 ma or just under 2 amps. For the 16-segment displays, which there are 4 the total current is 16 x 4 x 15ma or 960 ma or just under 1 amp. An Arduino can't even handle on segment. So I need to buffer the displays from the arduino. Power Rail ...
I am calling this Life Support: Monitor and Control. Why you ask? This is a complete system that can control heating or cooling without changing settings. run the fan automatically for air quality and also handle a dehumidifier as well as detection  for smoke, fire and carbon monoxide. To  show what's going on I will have the following connected to the Arduino: 4x20 LED LCD I2C display 4x4 keyboard using interrupts and not the library. (4 input OR gate and a Schmitt Trigger.) Commu ...
Analysis: The first hurdle is that an Arduino has only GPIO pins but you can not get to a bus from here, without a lot of bit-banging by the CPU. Second, the Displays are smart devices and designed to have both Address and Data Buses. The only thing is to use an I2C peripheral expander.  The only problem is that the I2C bus limits to about 1 meter. The Plan: I will wire the MCP23017  to the display board as follows: MCP Pin Display Pin Data Bus GPA0 21 D0 25 GPA1 22 D1 24 GPA2 23 D2 ...
I have decided to update my Fuel Load Indicator which has only outputs for a human. My goal is to Recycle & Retrofit this indicator so that it can talk over the CANaerospace network. The network responds to node 0 for multicast, and also nodes 668 - 675 (tank_1 - tank_8). I have not been able to get the display to fire up with the pinouts here. Starting from the beginning I have gotten somethings wrong, ie the pinouts of the display connector. On most IDE connectors the side with the notch ...
NexGen: Component Documentation Doppler Navigation Display Unit: ASN-1252/ASN-128 Note: As this unit has been gutted I will have to do all the work. You can find a user manual here TM-1-1520-240-10 or you can find a nice pdf version here the unit is described in Section 3.3.11 Plan: 2 ardunios For the display and CANaerospace interface. The display is not LED-powered but incandescent bulbs. Since there are 13 7-segment displays and an additional 4 16-segment displays.  I can most likely ...