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Hello! This is Peter. Boeing 727-200 enthusiast and Arduino beginner.


Peter Elsler
(@peter-elsler)
Eminent Member
Joined: 5 months ago
Posts: 22
Topic starter  

Hello Bill,

hello everyone.

My name is Peter, I am german, 63 years old,  doctorated in technical chemistry at RWTH-Aachen, and living since 1988 in Brazil. I have worked in development, production, quality control, and environmental technology for some multinational and national companies. I also worked in the MBA program of Getulio Vargas Foundation in Rio de Janeiro, a Brazilian higher education institution and think tank founded on December 20, 1944, with a mission "To stimulate Brazil’s socio-economic development".

Actually I work together with my Brazilian wife, a german language teacher, as sparring partner“ for conversation in german with our students. Many of them are studying chemical engineering at São Paulo University, which has a campus here in Lorena - SP.

My hobby is the construction/restoration of original Boeing 727-200 panels, such as MAIN PANEL, OVERHEAD PANEL, 2nd ENGINEERS PANEL, RADIOBOX and THROTTLE QUADRANT. I began my collection in 2007 and bought all original instruments and panels, in excellent quality and with fair prices, from Capt. Nick Louis, chairman of APHS, Airline Pilot´s Historical Society, in Illinois, USA. APHS is a non-profit, charitable foundation whose purpose is to educate through the preservation of aircraft parts and components. The money Nick and his sons raise goes either to educational projects, or to children's hospitals and organizations that specialize in the needs of children.

The physical mounting is nearly finished. Now, I want to work with the ARDUINOS to connect these panels and instruments to X-Plane 11 Flight simulator (as far, as I can).

Especially I want to drive SYNCHRO (Transmitters / Receivers) "SELSYNS" by ARDUINO. Normally , in aviation, these SYNCHROS are AC driven at 400 Hz with a 28 V Rotor and three 11.8 V coils (each 120°). For some instruments, the voltage can be up to 115 V.

 

There are two types of application of SYNCHROS that I need help and that I want to discuss on this forum:

  1. Moving SYNCHROS by ARDUINO, used as “motors” to drive the exact position of indicator needles or discs on aircraft instruments, such as on the RADIO MAGNETIC INDICATOR (RMI).

I want directly connect the 3 stator coils and the rotor coil to 4 H-Bridges per SYNCHRO and drive them by the ARDUINO, using the PWM-Mode.

  1. Measuring the exact position of SYNCHROS by ARDUINO, to determine mechanical inputs on a scale, such as done by the SET ALTITUDE INDICATOR.

I will create two SUBFORUMS in the ARDUINO Forum: SYNCHROS "SELSYNS" as Output Devices and SYNCHROS ”SELSYNS” as Input Devices.

I am a beginner with Arduino programming. Therefore I would need and appreciate the help of some specialists in the forum.

This topic was modified 5 months ago by DroneBot Workshop

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EAL727Capt
(@eal727capt)
New Member
Joined: 2 months ago
Posts: 2
 

Peter!
A fellow Boeing 727-200 fan!

I, too, am building a home cockpit of the magnificent aircraft and hope we can become friends and share knowledge and best practices.

I look forward to hearing from you and learning about your project.

 

Jay

Las Vegas, NV


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Mark Bolton
(@mark-bolton)
Eminent Member
Joined: 2 months ago
Posts: 45
 

How fascinating!  I used to fly Tiger Moth and Chipmonk and have a little flying wing model aeroplane and a Taranis radio controller. Sadly I have neglected this hobby but one day I hope to resume.


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Peter Elsler
(@peter-elsler)
Eminent Member
Joined: 5 months ago
Posts: 22
Topic starter  

Hello Jay!

Thanks for your contact.

I am collecting B727 stuff since 2007 and completed my collection in 2019. Today it´s nearly impossible to find stuff to complete a full B727 project, because this old lady has almost gone.

Actually I reconstructed the Main Panel, integrating RT-Box and the Glare Shield. Doing so, I obtained the correct 5 to 7 degree inclination of the Main Panel.

I the meantime I have learned, that making it fully functional with a flight simulator, is out of my competence. Therefore I changed my project goals. Until november / december I will hook up the panel lights and instrument lights to arduinos and make the B727 panel as a stand alone unit, conserving it as historical artifact of aviation.

Bill´s DroneBot Workshop gives excellent instructions how to work with the arduinos. In order to be compilant with the DroneBot Forum rules, I cannot discuss construction details in this forum. But there are many flightsim forums and homecockpit builder sites on the internet.

I am still interested to work on the problem of interfacing some specific aircraft instruments, such as the RMI, to the arduino. Until now, I have no feasable solution.

I hope, that from december on, I will continue to work on this issue. As soon as I have new insights, I will post them in this forum.

Good luck and many happy landings!

 

Peter

DSC01413
This post was modified 1 month ago by Peter Elsler

DroneBot Workshop
(@dronebot-workshop)
Workshop Guru Admin
Joined: 2 years ago
Posts: 1004
 
Posted by: @peter-elsler

In order to be compilant with the DroneBot Forum rules, I cannot discuss construction details in this forum

As I'm the one who created the rules, I'm puzzled as to which "rule" you would be breaking? On the contrary, I encourage anyone to give as many details about their projects as they feel comfortable sharing.

Peter, please feel free to share as much as you wish regarding this amazing project.  I would suggest that you start a new thread, instead of keeping it in the "Introduce Yourself" section, as it will be easier to reference it later. 

A great place to put this would be the "Show & Tell" section in the "Project Corner".

My father worked in the aerospace industry as an engineer, partly in the space program (Gemini, Apollo and Space Shuttle) and he also spent a decade designing aircraft simulators. He would have loved something like this!

So I definitely would encourage you to post as much about this as you wish!

😎

Bill

 

"Never trust a computer you can’t throw out a window." — Steve Wozniak


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Peter Elsler
(@peter-elsler)
Eminent Member
Joined: 5 months ago
Posts: 22
Topic starter  

@dronebot-workshop

Many thanks Bill.

I apreciate the "liberty" you give to discuss different issues on your forum.

I admire your father. Working on the Apollo project ist a hightlight. As child, I followed each step of these missions.

Stay safe.

Peter


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MadMisha
(@madmisha)
Reputable Member
Joined: 2 years ago
Posts: 319
 

If you don't know about it already, think about a thumper(sometimes called a butt kicker, although that the more expensive name brand). Drummers use it to feel the lower frequencies that are not adequately reproduced by in ear monitors that we use now. Most music supply stores have it or will know about it(or online Big one, Small one). It attaches to your seat and vibrates it based off of the lower frequencies that you feed it through the audio line. This will give the the ability to feel the plane.


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Peter Elsler
(@peter-elsler)
Eminent Member
Joined: 5 months ago
Posts: 22
Topic starter  

 

Hello Bill,

here are some images of my space

collection.

CIMG0063
CIMG0114
CIMG0074
CIMG0073
CIMG0109
CIMG0095
CIMG0089

 

This post was modified 1 month ago by Peter Elsler

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Mark Bolton
(@mark-bolton)
Eminent Member
Joined: 2 months ago
Posts: 45
 

As to relevance or otherwise of your particular applications to Microcomputing:

I am at the stage where I know enough about coding to steal code - like a magpie and repurpose it to my needs.

As to matters Aeronautical and Space - too much of it is barely enough, in my estimation.

What is most poignant to me is the realization that Space is no fit place for a human being. As robots get better at doing the jobs out there, that need doing there is less and less justification for lofting bits of meat into the sky.  Same applies to underground mining.

Love your space collection!

M


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