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. ...
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...
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) positions.
CANaerospace ...
Redacted April 10, 2024
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, the total current is 7 x 15ma. or 105 ma. Now multiply...
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&...
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...
The Broadcom , HP , HDSP-2131 (yellow), HDSP-2179 (orange), HDSP-2132 (high efficiency red) and the HDSP-2133 (green) are eight-digit, 5 × 7 dot matrix, alphanumeric displays. The 5.0-mm (0.2-in.) high characters are packaged in a standard 7.64...
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 66...
The question is how can you put ALL the parts into one database? And then make some sense of the thing. I designed my database similar to the one we used at Interdata in the late '70s. So why do I call this universal?
Well, I have separated parts by ...
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...
Well, I'm just flat tired of fighting with my DB-25M interface connectors, at first, I thought of LEDs with pull up resistors. After dinner, my mind wandered back to my cable tester, hey, an Arduino Mega, which I have a bunch of, has 52 digital p...
As you may be aware that my hosting service eliminated my shared plan. So I did what I did before bring the damn thing down and host it myself. This is an ongoing fight with some wins. Since AT&T offered me IP space and a 1Gb line which I have n...
This project is well overdue as I started it over 2 years ago. If you remember the power cord set was unobtainium, and they had just soldered in a cable and tied a knot in it and called it a day. So I decided to mount an STD IEC power connector...
+5vdc regulator+12vdc / +15vdc regulator-12vdc / -15vdc regulatorVideo MonitorChar DecemptyLine MemoryPOS DECDIOCK/DI dug this CDU out of my shed. The only document that I have was the pinout of the two rear connectors. I wish to thank KG at Collins ...
It seems like the best intentions go by the wayside. If there was not enough turmoil in my life my hosting company whose tech support is based in the UK is the worst. So I have decided to bring the server back home. I now only have till the end...
Oh well, after hooking up my 4x20 LCD (that was held over from the Beagle Bone AI project, that I could never get to work) it still failed on my Arduino Mega. I ordered one, off eBay. The first thing I did was to run the test program. Vola it ...
Well in my unpacking I came across this old piece of history, a one-inch diameter Magnesian. It was made g-d knows when. This device has only four pins, which threw me for a loop. I did not understand how it worked until I found figure 2. Norma...
span>Ok I'm back at it repairing stuff, the inner and outer front panels have been pressed and pounded on and then the aluminum outer panel got some new gray paint. I have also replaced the cheap binding posts in favor of some surplus Pamona...
Ok, this will be a new series of blogs taking you and me from sending a CAN message between two Arduinos. First without interrupts on the receiver and then with. Then with the same hardware, I will send an adequately formatted CANaerospace message. C...
Well, here I am again, with the big question: How does the computer talk to the slaves (Arduino Megas. I have gone through USB (major problems), NASA Edin Lite via RS485 (but it has a small packet size).Then I thought of Ethernet (too costly per node...
All is now well most of my noise was coming from two sources.Power bridge needed resoldering!Scope probe not grounded!It is now all buttoned up and on the shelf!Here are some pictures.Test SetupSine WaveSquare WaveTriangle Wave
THENNOWWell, I have this unit on the repair shelf for a since 2015/07/22 So after much sawing and filing I got the NEMA socket to fit in the damn hole. In hindsight, I am glad I used the spade lugs! I then use a Molex type plug set with some wire on ...
THENNOW Black (Hot) and White (Neutral) ended up switched so 110 VAC ended up on my ground-plane! Push on connectors are a must! I replaced the bridge with 4 100vdc 5 amp monsters. It took quite a bit of heat to solder the big leads so I s...
