 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
alec(at)alecmyers.com
Guest
|
 Posted: Sat Dec 10, 2022 7:18 am Post subject: Radio altimeter |
 |
|
Here’s little project that might fire someone’s imagination.
I bought a radio altimeter module from Ainstein (US-D1: https://ainstein.ai/drone-makers-drone-service-providers/us-d1/) and paired it with a PIC microcontroller-driven display, to make a radio altimeter to help my students learn to judge their height above ground when learning to land.
First iteration was with a four digit display height readout, but nobody has time to be looking at that while landing, so now I have three LED’s and a buzzer: red shows above 25’, amber is 4’-25’ and green is 3’ and below. The buzzer sounds intermittently below 25’ and continuously at 3’. The switch disables the buzzer, in case it gets irritating.
Because I’m in a TC aircraft and not OBAM, the antenna is attached with 3M mate-n-lok to the inside of a plastic inspection hatch on the belly (radiation transparent) and the whole thing is powered from the 5v output of a USB port (or USB battery power-pack).
I have noticed that the antenna emits enough unwanted RF on a frequency of 125.00MHz to open the COM squelch and give a lot of noise in the headsets on that frequency, which is unfortunate as 125.00MHz is the tower frequency of a nearby airport, but other than that it works well.
Here’s a picture of the display unit, the box is about 3 inches long:
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
| Description: |
|
| Filesize: |
22.47 KB |
| Viewed: |
1175 Time(s) |
|
| Description: |
|
| Filesize: |
26.75 KB |
| Viewed: |
1175 Time(s) |
|
|
|
| Back to top |
|
 |
alec(at)alecmyers.com
Guest
|
| Posted: Sat Dec 10, 2022 7:21 am Post subject: Radio altimeter |
|
|
Sorry - my bad - the antenna is secured with 3m "dual lock” tape - it’s like a more robust version of Velcro. It’s great for securing things in an airplane in a temporary fashion. If anyone hasn’t tried it, I recommend it!
On Dec 10, 2022, at 9:52 AM, Alec Myers <alec(at)alecmyers.com> wrote:
Here’s little project that might fire someone’s imagination.
I bought a radio altimeter module from Ainstein (US-D1: https://ainstein.ai/drone-makers-drone-service-providers/us-d1/) and paired it with a PIC microcontroller-driven display, to make a radio altimeter to help my students learn to judge their height above ground when learning to land.
First iteration was with a four digit display height readout, but nobody has time to be looking at that while landing, so now I have three LED’s and a buzzer: red shows above 25’, amber is 4’-25’ and green is 3’ and below. The buzzer sounds intermittently below 25’ and continuously at 3’. The switch disables the buzzer, in case it gets irritating.
Because I’m in a TC aircraft and not OBAM, the antenna is attached with 3M mate-n-lok to the inside of a plastic inspection hatch on the belly (radiation transparent) and the whole thing is powered from the 5v output of a USB port (or USB battery power-pack).
I have noticed that the antenna emits enough unwanted RF on a frequency of 125.00MHz to open the COM squelch and give a lot of noise in the headsets on that frequency, which is unfortunate as 125.00MHz is the tower frequency of a nearby airport, but other than that it works well.
Here’s a picture of the display unit, the box is about 3 inches long:
<IMG_2561.jpeg>
<IMG_2560.jpeg>
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
|
david(at)carter.net
Guest
|
| Posted: Sat Dec 10, 2022 8:22 am Post subject: Radio altimeter |
|
|
Very similar in concept to this product -
https://landingheight.com/shop/
I have their earlier non-certifed version in my RV-7A.
https://www.enginebridge.com/product/landing-height-controller-copy/
On Sat, Dec 10, 2022 at 8:21 AM Alec Myers <alec(at)alecmyers.com (alec(at)alecmyers.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Alec Myers <alec(at)alecmyers.com (alec(at)alecmyers.com)>
Sorry - my bad - the antenna is secured with 3m "dual lock” tape - it’s like a more robust version of Velcro. It’s great for securing things in an airplane in a temporary fashion. If anyone hasn’t tried it, I recommend it!
On Dec 10, 2022, at 9:52 AM, Alec Myers <alec(at)alecmyers.com (alec(at)alecmyers.com)> wrote:
Here’s little project that might fire someone’s imagination.
I bought a radio altimeter module from Ainstein (US-D1: https://ainstein.ai/drone-makers-drone-service-providers/us-d1/) and paired it with a PIC microcontroller-driven display, to make a radio altimeter to help my students learn to judge their height above ground when learning to land.
First iteration was with a four digit display height readout, but nobody has time to be looking at that while landing, so now I have three LED’s and a buzzer: red shows above 25’, amber is 4’-25’ and green is 3’ and below. The buzzer sounds intermittently below 25’ and continuously at 3’. The switch disables the buzzer, in case it gets irritating.
Because I’m in a TC aircraft and not OBAM, the antenna is attached with 3M mate-n-lok to the inside of a plastic inspection hatch on the belly (radiation transparent) and the whole thing is powered from the 5v output of a USB port (or USB battery power-pack).
I have noticed that the antenna emits enough unwanted RF on a frequency of 125.00MHz to open the COM squelch and give a lot of noise in the headsets on that frequency, which is unfortunate as 125.00MHz is the tower frequency of a nearby airport, but other than that it works well.
Here’s a picture of the display unit, the box is about 3 inches long:
<IMG_2561.jpeg>
<IMG_2560.jpeg>
===========
-
Electric-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
-Matt Dralle, List Admin.
="noreferrer" target="_blank">https://matronics.com/contribution
===========
|
--
---
David Carter
david(at)carter.net (david(at)carter.net)
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
|
|
| Back to top |
|
|
Eric Page
Joined: 15 Feb 2017
Posts: 245
|
|
| Back to top |
|
|
|
|
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
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
