Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Arduino and

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

argoldman(at)aol.com
Guest

Posted: Wed Dec 16, 2020 5:23 pm Post subject: Arduino and

Greetings all,

  

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS.

  

 Same question with regulators. Will a switching regulator create noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

  

 This is a little above my pay grade.

  

 Hope everybody is staying well now

  

 Thanks.

  

 Rich

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Dec 16, 2020 6:22 pm Post subject: Arduino and

At 07:17 PM 12/16/2020, you wrote:



  	  Quote: 	
		  Greetings all,

  

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS. 	


   unlikely but easy to test in VMC

   flight. The only predictive activity

   you can pursue is to take it to an

   EMC lab and run the full suite of

   radiated compatibility tests. You

   probably wont find any violations . . .

   and even if there are some, the

   probability of posing a risk is

   low. The last EMC lab time I rented

   was about 20 years ago and it was

   over $750/hr!

  	  Quote: 	
		   

 Same question with regulators. Will a switching regulator create

 noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

  	
  I take it you're not talking about an

   alternator regulator. What energy class

   are we talking about? Mounted on an

   ECB to stroke the Arduino parts?

   I wouldn't worry about it.



 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

argoldman(at)aol.com
Guest

Posted: Wed Dec 16, 2020 7:15 pm Post subject: Arduino and

Thanks Bob,



I am considering using RC servos to regulate heating airflow from a fan heat exchanger (liquid cooled) to enable me to electrically control 3 tubes â€”front seat, rear seats and defrost. The servos need pulse modulated... a good application for  the Arduino. The servos and Arduino need power at around 5V thus the necessity for regulator.

Maybe these kind of things have stretched my build time to 16 years and still countingðŸ¤•

Rich



Sent from my iPhone



On Dec 16, 2020, at 8:17 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    At 07:17 PM 12/16/2020, you wrote:



  	  Quote: 	
		  Greetings all,

  

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS. 	


   unlikely but easy to test in VMC

   flight. The only predictive activity

   you can pursue is to take it to an

   EMC lab and run the full suite of

   radiated compatibility tests. You

   probably wont find any violations . . .

   and even if there are some, the

   probability of posing a risk is

   low. The last EMC lab time I rented

   was about 20 years ago and it was

   over $750/hr!

  	  Quote: 	
		   

 Same question with regulators. Will a switching regulator create

 noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

  	
  I take it you're not talking about an

   alternator regulator. What energy class

   are we talking about? Mounted on an

   ECB to stroke the Arduino parts?

   I wouldn't worry about it.



 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

     =================================== st">http://www.matronics.com/Navigator?AeroElectric-List =================================== cs.com =================================== om =================================== matronics.com/contribution ===================================

yellowduckduo(at)gmail.co
Guest

Posted: Wed Dec 16, 2020 7:15 pm Post subject: Arduino and

I run several 5 volt arduinos  for data collection, displays, and signal 

processing in plastic boxes and haven't detected any issues whether they 

are powered or not.  No effect on a couple of gps receivers or VHF comm. 

I do not have an ILS or VOR receiver.

Ken



On 16/12/2020 9:17 PM, Robert L. Nuckolls, III wrote:

 	  Quote: 	
		   At 07:17 PM 12/16/2020, you wrote:



> Greetings all,

>

> Anybody know if an Arduino will create interference with the aircraft 

> radios, including GPS.



   unlikely but easy to test in VMC

   flight. The only predictive activity

   you can pursue is to take it to an

   EMC lab and run the full suite of

   radiated compatibility tests. You

   probably wont find any violations . . .

   and even if there are some, the

   probability of posing a risk is

   low. The last EMC lab time I rented

   was about 20 years ago and it was

   over $750/hr!

>

> Same question with regulators. Will a switching regulator create

> noise that we can't use or is it best to use a linear regulator with 

> it's attendant heat problems. 12V to 5 V.

   I take it you're not talking about an

   alternator regulator. What energy class

   are we talking about? Mounted on an

   ECB to stroke the Arduino parts?

   I wouldn't worry about it.



   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

argoldman(at)aol.com
Guest

Posted: Wed Dec 16, 2020 8:16 pm Post subject: Arduino and

Ken,

Very encouraging. 

What are you using to reduce to 5V?



Thanks



Rich



Sent from my iPhone



 	  Quote: 	
		   On Dec 16, 2020, at 9:09 PM, C&K <yellowduckduo(at)gmail.com> wrote:

 

 

 

 I run several 5 volt arduinos  for data collection, displays, and signal processing in plastic boxes and haven't detected any issues whether they are powered or not.  No effect on a couple of gps receivers or VHF comm. I do not have an ILS or VOR receiver.

 Ken

 

> On 16/12/2020 9:17 PM, Robert L. Nuckolls, III wrote:

> At 07:17 PM 12/16/2020, you wrote:

> 

>> Greetings all,

>> 

>> Anybody know if an Arduino will create interference with the aircraft radios, including GPS.

> 

>   unlikely but easy to test in VMC

>   flight. The only predictive activity

>   you can pursue is to take it to an

>   EMC lab and run the full suite of

>   radiated compatibility tests. You

>   probably wont find any violations . . .

>   and even if there are some, the

>   probability of posing a risk is

>   low. The last EMC lab time I rented

>   was about 20 years ago and it was

>   over $750/hr!

>> 

>> Same question with regulators. Will a switching regulator create

>> noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

>   I take it you're not talking about an

>   alternator regulator. What energy class

>   are we talking about? Mounted on an

>   ECB to stroke the Arduino parts?

>   I wouldn't worry about it.

> 

>   Bob . . .

> 

>   Un impeachable logic: George Carlin asked, "If black boxes

>   survive crashes, why don't they make the whole airplane

>   out of that stuff?"

>

andymeyer

Joined: 31 Mar 2015
Posts: 54
Location: SW MI

Posted: Thu Dec 17, 2020 7:25 am Post subject: Re: Arduino and

Arduinos interface very nicely. In fact, I've tested and am installing an color, touchscreen engine monitor based on three arduino type microcontrollers. Already proved out the interface with the GPS (both Aviation and NMEA formats).



I have linear regulators for power. https://recom-power.com/pdf/Innoline/R-78E-1.0.pdf



What I've built is a circuit board with all of my glue logic (linear power supplies, thermocouple to analog converters, voltage dividers, circuit protection, drivers for outputs, RS-232 drivers, etc...) on a board that the Arduino (Teensy) micro-controller board is installed on. 



The teensy is easily programmed in C. Working on the air data computer / magnetometer now. That will feed the data for winds aloft computations to my Avidyne IFD540.



I've also got a Stratux (home built ADS-B receiver) feeding traffic and weather via RS232 to my IFD-540 which then shares it to my ipad, etc... That has a boost/buck converter since the Raspberry Pi needs a bit more power. (2 amps)



Rich, What / how do you want to interface (user interface) to this? This is easy stuff for an Arduino. Spin a PCBA to mount the arduino, switches, UI, etc.. on, mount it in a case with connectors, and you're done. The PCBA could be as cheap as $20-30  shipped. How much power to the servos?

bob.verwey(at)gmail.com
Guest

Posted: Thu Dec 17, 2020 8:45 am Post subject: Arduino and

How impressive!



On Thu, 17 Dec 2020, 17:36 andymeyer, <meyerkc135(at)gmail.com (meyerkc135(at)gmail.com)> wrote:



 	  Quote: 	
		  --> AeroElectric-List message posted by: "andymeyer" <meyerkc135(at)gmail.com (meyerkc135(at)gmail.com)>

 

 Arduinos interface very nicely. In fact, I've tested and am installing an color, touchscreen engine monitor based on three arduino type microcontrollers. Already proved out the interface with the GPS (both Aviation and NMEA formats).

 

 I have linear regulators for power. https://recom-power.com/pdf/Innoline/R-78E-1.0.pdf

 

 What I've built is a circuit board with all of my glue logic (linear power supplies, thermocouple to analog converters, voltage dividers, circuit protection, drivers for outputs, RS-232 drivers, etc...) on a board that the Arduino (Teensy) micro-controller board is installed on. 

 

 The teensy is easily programmed in C. Working on the air data computer / magnetometer now. That will feed the data for winds aloft computations to my Avidyne IFD540.

 

 I've also got a Stratux (home built ADS-B receiver) feeding traffic and weather via RS232 to my IFD-540 which then shares it to my ipad, etc... That has a boost/buck converter since the Raspberry Pi needs a bit more power. (2 amps)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=499691#499691

 

 

 

 

 

 

 ===========

  -

 Electric-List" rel="noreferrer noreferrer" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ===========

  FORUMS -

 eferrer noreferrer" target="_blank">http://forums.matronics.com

 ===========

 WIKI -

 errer noreferrer" target="_blank">http://wiki.matronics.com

 ===========

 b Site -

 Â  Â  Â  Â  Â  -Matt Dralle, List Admin.

 rel="noreferrer noreferrer" target="_blank">http://www.matronics.com/contribution

 ===========

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Dec 17, 2020 9:04 am Post subject: Arduino and

At 09:25 AM 12/17/2020, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "andymeyer" <meyerkc135(at)gmail.com>



 Arduinos interface very nicely. In fact, I've tested and am installing an color, touchscreen engine monitor based on three arduino type microcontrollers. Already proved out the interface with the GPS (both Aviation and NMEA formats).



 I have linear regulators for power.  https://recom-power.com/pdf/Innoline/R-78E-1.0.pdf



 What I've built is a circuit board with all of my glue logic (linear power supplies, thermocouple to analog converters, voltage dividers, circuit protection, drivers for outputs, RS-232 drivers, etc...) on a board that the Arduino (Teensy) micro-controller board is installed on. 



 The teensy is easily programmed in C. Working on the air data computer / magnetometer now. That will feed the data for winds aloft computations to my Avidyne IFD540.



 I've also got a Stratux (home built ADS-B receiver) feeding traffic and weather via RS232 to my IFD-540 which then shares it to my ipad, etc... That has a boost/buck converter since the Raspberry Pi needs a bit more power. (2 amps) 	


   Great data points . . .



   The first flying uC project I built was

   individual CPU, Bus decoders, RAM, ROM,

   I/O ports, etc. There were significant

   lengths of copper running between chips

   to keep everything dancing together. These

   were NOT transmission lines terminated

   for minimal radiation. Hence, likelihood

   of radiation was significant but on the

   upside, that uC clocked along at a blazing

   4 MHz!



   I've not personally taken a uC project

   to production so there was never a need to

   run through the EMC sniffer lab. All my

   stuff was engineering prototype or flight

   test hardware. So I'll never know if those

   early hammer-n-tongs projects would have

   problematic pathways to production.



   Today's uC device run MUCH faster but the

   family of chips necessary to address

   the task are on a single piece of silicon.

   Essentially zero bus lengths.



   The most energetic violators of RF sanctity

   in the cockpit have been display screens of various

   types. I recall walking up to a booth at OSH

   one year with a VHF Comm transceiver in my

   pocket. The starry-eyed entrepreneur was eager

   to show me his offering for a little engine 

   monitor with a 2.5" screen with great color

   and brightness.  The transceiver in my pocket

   went bonkers. Took the antenna of the radio

   and probed around the outside of his nicely

   crafted enclosure. The greatest radiation

   came from the face of the display.



   I think the risks for unwanted radiation from

   your DIY project is low and probably fixable

   if it is discovered. If your project includes

   a flat screen display . . . look there first.



 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

farmrjohn

Joined: 31 Dec 2018
Posts: 54

Posted: Thu Dec 17, 2020 9:20 am Post subject: Re: Arduino and

 	  andymeyer wrote: 	
		  



I've also got a Stratux (home built ADS-B receiver) feeding traffic and weather via RS232 to my IFD-540 which then shares it to my ipad, etc... That has a boost/buck converter since the Raspberry Pi needs a bit more power. (2 amps)

	




Slight topic hijack, but do you have the details of the RS232 output from the Stratux?  I'd like that input to a GRT Mini display.  John

andymeyer

Joined: 31 Mar 2015
Posts: 54
Location: SW MI

Posted: Thu Dec 17, 2020 10:34 am Post subject: Re: Arduino and

 	  farmrjohn wrote: 	
		   	  andymeyer wrote: 	
		  



I've also got a Stratux (home built ADS-B receiver) feeding traffic and weather via RS232 to my IFD-540 which then shares it to my ipad, etc... That has a boost/buck converter since the Raspberry Pi needs a bit more power. (2 amps)

	




Slight topic hijack, but do you have the details of the RS232 output from the Stratux?  I'd like that input to a GRT Mini display.  John 	




Started new thread on this...

david(at)carter.net
Guest

Posted: Thu Dec 17, 2020 10:56 am Post subject: Arduino and

I'm using an Arduino to read the analog 0-5v output from an automotive AFR monitor (Ballenger AFR500v2) as input to a PID controller, with the output controlling a linear actuator (fancy name for servo) that pushes or pulls the mixture knob in my RV7A. I also haveÂ a Raspberry Pi-based Stratux in the plane, and I've never encountered EMI issues. I'd like to add control of my heater damper because I'm always fiddling withÂ it - always too hot or too cold.Â 



I'm using these actuators -Â https://www.actuonix.com/RC-linear-servos-s/1853.htm

---

David Carter

david(at)carter.net (david(at)carter.net)



On Wed, Dec 16, 2020 at 10:17 PM A RICHARD GOLDMAN <argoldman(at)aol.com (argoldman(at)aol.com)> wrote:



 	  Quote: 	
		  Thanks Bob,



I am considering using RC servos to regulate heating airflow from a fan heat exchanger (liquid cooled) to enable me to electrically control 3 tubes â€”front seat, rear seats and defrost. The servos need pulse modulated... a good application for Â the Arduino. The servos and Arduino need power at around 5V thus the necessity for regulator.

Maybe these kind of things have stretched my build time to 16 years and still countingðŸ¤•

Rich



Sent from my iPhone



On Dec 16, 2020, at 8:17 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    At 07:17 PM 12/16/2020, you wrote:



  	  Quote: 	
		  Greetings all,

 Â 

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS. 	


 Â  unlikely but easy to test in VMC

 Â  flight. The only predictive activity

 Â  you can pursue is to take it to an

 Â  EMC lab and run the full suite of

 Â  radiated compatibility tests. You

 Â  probably wont find any violations . . .

 Â  and even if there are some, the

 Â  probability of posing a risk is

 Â  low. The last EMC lab time I rented

 Â  was about 20 years ago and it was

 Â  over $750/hr!

  	  Quote: 	
		  Â 

 Same question with regulators. Will a switching regulator create

 noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

 Â  	
Â  I take it you're not talking about an

 Â  alternator regulator. What energy class

 Â  are we talking about? Mounted on an

 Â  ECB to stroke the Arduino parts?

 Â  I wouldn't worry about it.



 

 Â  Bob . . .



 Â  Un impeachable logic: George Carlin asked, "If black boxes

 Â  survive crashes, why don't they make the whole airplane

 Â  out of that stuff?"

     ========== st">http://www.matronics.com/Navigator?AeroElectric-List ========== cs.com ========== om ========== matronics.com/contribution ==========

jluckey(at)pacbell.net
Guest

Posted: Thu Dec 17, 2020 12:44 pm Post subject: Arduino and

David,

Super cool project!  I have questions:

1. What is the PID controller running on? (Arduino, uController,???)

2. Where, physically did you place the O2 sensor?





Thx,





Jeff

Camarillo CA

                  

                                                                    On Thursday, December 17, 2020, 11:29:56 AM PST, David Carter <david(at)carter.net> wrote:                 

                 



                 



                 I'm using an Arduino to read the analog 0-5v output from an automotive AFR monitor (Ballenger AFR500v2) as input to a PID controller, with the output controlling a linear actuator (fancy name for servo) that pushes or pulls the mixture knob in my RV7A. I also have a Raspberry Pi-based Stratux in the plane, and I've never encountered EMI issues. I'd like to add control of my heater damper because I'm always fiddling with it - always too hot or too cold. 



I'm using these actuators - https://www.actuonix.com/RC-linear-servos-s/1853.htm

---

David Carter

david(at)carter.net (david(at)carter.net)



On Wed, Dec 16, 2020 at 10:17 PM A RICHARD GOLDMAN <argoldman(at)aol.com (argoldman(at)aol.com)> wrote:



 	  Quote: 	
		  Thanks Bob,



I am considering using RC servos to regulate heating airflow from a fan heat exchanger (liquid cooled) to enable me to electrically control 3 tubes â€”front seat, rear seats and defrost. The servos need pulse modulated... a good application for  the Arduino. The servos and Arduino need power at around 5V thus the necessity for regulator.

Maybe these kind of things have stretched my build time to 16 years and still countingðŸ¤•

Rich



Sent from my iPhone



On Dec 16, 2020, at 8:17 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    At 07:17 PM 12/16/2020, you wrote:



  	  Quote: 	
		  Greetings all,

  

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS. 	


   unlikely but easy to test in VMC

   flight. The only predictive activity

   you can pursue is to take it to an

   EMC lab and run the full suite of

   radiated compatibility tests. You

   probably wont find any violations . . .

   and even if there are some, the

   probability of posing a risk is

   low. The last EMC lab time I rented

   was about 20 years ago and it was

   over $750/hr!

  	  Quote: 	
		   

 Same question with regulators. Will a switching regulator create

 noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

  	
  I take it you're not talking about an

   alternator regulator. What energy class

   are we talking about? Mounted on an

   ECB to stroke the Arduino parts?

   I wouldn't worry about it.



 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

     ========== st">http://www.matronics.com/Navigator?AeroElectric-List ========== cs.com ========== om ========== matronics.com/contribution ==========

david(at)carter.net
Guest

Posted: Thu Dec 17, 2020 1:47 pm Post subject: Arduino and

Jeff -Â 

 	  Quote: 	
		  > 1. What is the PID controller running on? (Arduino, uController,???)

Â  Â  Â  Â  Â  - The pid logic is currently running on an ESP32 programmed via the Arduino IDE. I'm not sure if that will be the final HW platform or not. I'd like to have WiFi and/or BLE available for future enhancements. The ESP32 BLE stack consumes almost the entire program space, so I may need to go with a co-processor to offload the communications or drop the BLE idea.Â 

Â  Â  Â  Â  Â  - I'm using this PID library -Â https://github.com/br3ttb/Arduino-PID-Library

 	  Quote: 	
		  > 2. Where, physically did you place the O2 sensor?

Â  Â  Â  Â  Â - I'm using the NTK production-grade O2 sensor because it is much more tolerant of 100LL than the Bosch wideband O2 sensors. There's a good thread on VAF about this.Â 

Â  Â  Â  Â  Â - My IO-360 has a 4-into-2 crossover exhaust. You should try to pick the exhaust pipe connected to your first-to-peak cylinder if you have that data from EGT monitoring. Mine is placed in the pilot-side exhaust pipe. I placed the sensor according to the directions in the Ballenger manual.Â https://www.bmotorsports.com/download/products/o2/AFR500v2_Manual.pdf

Â  Â  Â  Â  Â  - There is an article in Kitplanes magazine from March 2019 that describes an installation similar to mine.Â 

I borrowed the idea for the linear actuator on the mixture knob from this product:Â http://flightenhancements.com/auto-lean.htmlÂ  Â It holds a target EGT value, where my version holds a target AFR value.Â 

---

David Carter

david(at)carter.net (david(at)carter.net)

On Thu, Dec 17, 2020 at 3:46 PM Jeff Luckey <jluckey(at)pacbell.net (jluckey(at)pacbell.net)> wrote:

 	  Quote: 	

         David,

Super cool project!Â  I have questions:

1. What is the PID controller running on? (Arduino, uController,???)

2. Where, physically did you place the O2 sensor?

Thx,

Jeff

Camarillo CA

                                                                    On Thursday, December 17, 2020, 11:29:56 AM PST, David Carter <david(at)carter.net (david(at)carter.net)> wrote:                 

                 I'm using an Arduino to read the analog 0-5v output from an automotive AFR monitor (Ballenger AFR500v2) as input to a PID controller, with the output controlling a linear actuator (fancy name for servo) that pushes or pulls the mixture knob in my RV7A. I also haveÂ a Raspberry Pi-based Stratux in the plane, and I've never encountered EMI issues. I'd like to add control of my heater damper because I'm always fiddling withÂ it - always too hot or too cold.Â 

I'm using these actuators -Â https://www.actuonix.com/RC-linear-servos-s/1853.htm

---

David Carter

david(at)carter.net (david(at)carter.net)

On Wed, Dec 16, 2020 at 10:17 PM A RICHARD GOLDMAN <argoldman(at)aol.com (argoldman(at)aol.com)> wrote:

 	  Quote: 	
		  Thanks Bob,

I am considering using RC servos to regulate heating airflow from a fan heat exchanger (liquid cooled) to enable me to electrically control 3 tubes â€”front seat, rear seats and defrost. The servos need pulse modulated... a good application for Â the Arduino. The servos and Arduino need power at around 5V thus the necessity for regulator.

Maybe these kind of things have stretched my build time to 16 years and still countingðŸ¤•

Rich

Sent from my iPhone

On Dec 16, 2020, at 8:17 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		    At 07:17 PM 12/16/2020, you wrote:

  	  Quote: 	
		  Greetings all,

 Â 

 Anybody know if an Arduino will create interference with the aircraft radios, including GPS. 	

 Â  unlikely but easy to test in VMC

 Â  flight. The only predictive activity

 Â  you can pursue is to take it to an

 Â  EMC lab and run the full suite of

 Â  radiated compatibility tests. You

 Â  probably wont find any violations . . .

 Â  and even if there are some, the

 Â  probability of posing a risk is

 Â  low. The last EMC lab time I rented

 Â  was about 20 years ago and it was

 Â  over $750/hr!

  	  Quote: 	
		  Â 

 Same question with regulators. Will a switching regulator create

 noise that we can't use or is it best to use a linear regulator with it's attendant heat problems. 12V to 5 V.

 Â  	
Â  I take it you're not talking about an

 Â  alternator regulator. What energy class

 Â  are we talking about? Mounted on an

 Â  ECB to stroke the Arduino parts?

 Â  I wouldn't worry about it.

 Â  Bob . . .

 Â  Un impeachable logic: George Carlin asked, "If black boxes

 Â  survive crashes, why don't they make the whole airplane

 Â  out of that stuff?"

     ========== st">http://www.matronics.com/Navigator?AeroElectric-List ========== cs.com ========== om ========== matronics.com/contribution ==========

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum