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Author Topic: Fox CL timer with accelerometer  (Read 4263 times)
Andrea Di Caro
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« on: January 05, 2017, 12:14:17 PM »

What do you think about it?

« Last Edit: January 05, 2017, 04:38:10 PM by Andrea Di Caro » Logged


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« Reply #1 on: January 05, 2017, 12:53:46 PM »

Where do I get one?


MM
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« Reply #2 on: January 05, 2017, 01:57:44 PM »

Is in development, I'm testing him.
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Andrea Di Caro
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« Reply #3 on: January 05, 2017, 04:36:46 PM »

programming box...


* Timer1.jpg (165.6 KB, 1238x625 - viewed 100 times.)

* Timer2.jpg (136.64 KB, 822x617 - viewed 96 times.)
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« Reply #4 on: January 05, 2017, 10:40:23 PM »

Looks like it works good on the ground, why don't you take it out and fly it.


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« Reply #5 on: January 06, 2017, 07:42:09 AM »

Looks like it works good on the ground, why don't you take it out and fly it.


MM

Too cold and too windy, now.
I hope to fly it soon.
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Crist Rigotti
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« Reply #6 on: January 06, 2017, 03:29:13 PM »

If I may.  In the video, the motor changes RPM much too slow.  The corner would be done by the time the motor ramps up in speed, etc.  I would expect much, much faster response.
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« Reply #7 on: January 06, 2017, 03:46:39 PM »

If I may.  In the video, the motor changes RPM much too slow.  The corner would be done by the time the motor ramps up in speed, etc.  I would expect much, much faster response.

The "response time" can be set with the programming box.
It is not perfect, now.
I still have to work on it.
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« Reply #8 on: January 06, 2017, 07:19:28 PM »

That looks weird.  It changes RPM with orientation not load.  I thought the plan was to get constant RPM with changing load.   Stir the pot
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« Reply #9 on: January 07, 2017, 03:12:28 AM »

That looks weird.  It changes RPM with orientation not load.  I thought the plan was to get constant RPM with changing load.   Stir the pot

No, the plan was to get constant speed with changing position.
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Joe Yau
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« Reply #10 on: January 11, 2017, 03:20:01 PM »

What do you think about it?


Doesn't look like it could work with that setting.  As Crist has mentioned.. it is responding way too slow.  and also the rpm range is too extreme on acceleration and deceleration. What ESC are you using?
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Joe Yau
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« Reply #11 on: January 11, 2017, 04:12:56 PM »

I used the extreme settings, deliberately.
I can set it very differently.
It works with any type of esc, appropriately changing the setting.
However I'm not going to sell it.
I thought, when it is ready to publish the schematics and programming code.
If you do not care, it's not a problem.
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Frank Imbriaco
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« Reply #12 on: January 12, 2017, 06:34:54 AM »

Keep trying. Someday, they'll be back. y1
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Crist Rigotti
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« Reply #13 on: January 12, 2017, 08:52:29 AM »

Keep trying. Someday, they'll be back. y1

What's this suppose to mean?
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Crist
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« Reply #14 on: January 12, 2017, 12:01:43 PM »

 Words of encouragement. That's all. The man seemed to want to fold up his tent.
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« Reply #15 on: January 12, 2017, 12:15:03 PM »

  Chris:
Oh, and one more thing... He lives in a country rich with a history of  thinkers and tinkerers. 
On a personal note : All  four of my grandparents emigrated from Italy between 1901-1905.
They never gave up on any task. Same with their children.

 I would encourage him the same even if he came from another country.
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Crist Rigotti
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« Reply #16 on: January 12, 2017, 12:41:19 PM »

Words of encouragement. That's all. The man seemed to want to fold up his tent.

OK, I didn't understand.  I would offer encouragement too!
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Crist
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« Reply #17 on: January 12, 2017, 03:53:04 PM »

Seemed like it was working pretty good to me.

MM
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« Reply #18 on: January 13, 2017, 02:04:35 AM »

I used the extreme settings, deliberately.


O.k. that explains it.

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Joe Yau
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« Reply #19 on: April 07, 2017, 09:46:51 AM »

Working progress...



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« Reply #20 on: April 07, 2017, 12:15:21 PM »

Wow!  I saw the initial post and thought I understood but now that I see what you were going for, it really makes good sense.  Allow me to congratulate you on your accomplishment.  I really do like what I'm seeing.  Awesome!!  Hoff Grin
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Andrea Di Caro
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« Reply #21 on: April 12, 2017, 03:35:56 AM »

Wow!  I saw the initial post and thought I understood but now that I see what you were going for, it really makes good sense.  Allow me to congratulate you on your accomplishment.  I really do like what I'm seeing.  Awesome!!  Hoff Grin

Thanks Jim, but I can do even better.
This is the timer and the programming box now.
I'm still developing the timer.



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Carl Cisneros
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« Reply #22 on: April 12, 2017, 08:04:26 AM »

hhhhmmmmmmm   I like the way it manages the throttle (if you will) during the testing and flight videos.

very reminiscent of my F3A days back in the 90's.

Acts pretty much the same way as  my left thumb on the throttle.

I like it.

Carl
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« Reply #23 on: April 12, 2017, 08:12:57 AM »

Andrea, when you finally get it ready, I would love to try it on my planes.

Thanks

Carl
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« Reply #24 on: April 19, 2017, 03:49:45 AM »

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« Reply #25 on: April 19, 2017, 07:00:53 AM »

Andrea

I really like that selectivity a person can select from your chart there.

Very versatile to me which is great.   Hoff
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« Reply #26 on: April 20, 2017, 01:38:49 AM »

Andrea

I really like that selectivity a person can select from your chart there.

Very versatile to me which is great.   Hoff

The goal is to make a timer that works with any type of ESC, even without a governor.
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« Reply #27 on: May 14, 2017, 08:07:50 AM »

I'm impressed.

Mind I ask - where is your flying field ?

Frank
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« Reply #28 on: May 14, 2017, 09:38:22 AM »

I'm impressed.

Mind I ask - where is your flying field ?

Frank

Thanks Frank, but the timer is still improved now.
The flying field is in Orentano in Tuscany, do you know him?

Andy
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« Reply #29 on: May 14, 2017, 10:25:37 PM »

Ciao Andrea - I'm impressed too, keep working on this project!

I don't know Orentano, but I lived in Panzano in Chianti in 1974-75. Scratch-built a Goldberg Shoestring Stunter while living there. Brought it home to California and still have it. I recall an excellent hobby shop in Firenze that had everything. No flat areas to fly control line models in the hills of Toscana, lucky you live in the flat area close to Lucca. I have been back to Tuscany many times since then, wish I was there now.
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Andrea Di Caro
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« Reply #30 on: May 15, 2017, 10:34:01 AM »

Ciao Andrea - I'm impressed too, keep working on this project!

I don't know Orentano, but I lived in Panzano in Chianti in 1974-75. Scratch-built a Goldberg Shoestring Stunter while living there. Brought it home to California and still have it. I recall an excellent hobby shop in Firenze that had everything. No flat areas to fly control line models in the hills of Toscana, lucky you live in the flat area close to Lucca. I have been back to Tuscany many times since then, wish I was there now.

We are not far away. When you come to Italy, tell me. I would like to meet you

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« Reply #31 on: May 15, 2017, 11:25:58 PM »

Ciao Andrea:

Thanks for the reply. Just looking at the map and saying the names of the towns makes me want to go to the airport and take the next flight. Like so many people I truly love la bella Toscana. I need to improve my terrible Italiano before returning, my fluency has gotten really bad. No practice for the last 10 years. I attended school in Firenze (Universita degli Studi), studying Roman and Etruscan history.

Keep up the good work on your timer, it looks very promising.
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« Reply #32 on: June 04, 2017, 03:32:24 PM »

Baga 32
Weight 1.3 Kg RTF with battery
Motor: Emax  BL2820/07  920kV
ESC: ZTW AL Beatles 40A
Timer: Fox C/L Timer v.1.7
Prop: CAM-Carb.Light 11x5L (CW)
Lines: 19 m
Battery: Zippy 2200mA - 25C- 4S
Battery use: 1600mAH
Watts: (230 LevelFlight- 480 Vertical flight)
Lap time: 6.2 sec.

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Traian Dorin Morosanu
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« Reply #33 on: June 05, 2017, 05:54:40 AM »

Good Job Andrea
Is it me or do I hear motor variation in RPM kind of like it is not sure whether to go high or low and it bounces back and forth? It does it a lot less that in the first video. I thought that you had a better flight in the first video at lower speed.
Keep up follow your dream and thanks.
Traian
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Andrea Di Caro
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« Reply #34 on: June 05, 2017, 06:20:57 AM »

Good Job Andrea
Is it me or do I hear motor variation in RPM kind of like it is not sure whether to go high or low and it bounces back and forth? It does it a lot less that in the first video. I thought that you had a better flight in the first video at lower speed.
Keep up follow your dream and thanks.
Traian

In the previous video I used an esc Jeti spin pro 44.
In this video I use a ZTW Beatles 40A.
I wanted to try a low cost esc, indisputably Jeti works better, but it is not indispensable.
About the flight, consider that I'm not a big pilot ... :-)
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« Reply #35 on: June 05, 2017, 08:11:29 PM »

In the second video, the lap times seem faster than the first video. Do you think the ZTW ESC did not respond to the PWM changes as good as the Jeti Spin? I have been experimenting with some ESCs and some are just junk for us and some work great.
Keep up the good work there.
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« Reply #36 on: June 05, 2017, 09:52:31 PM »

Igor Burger has mentioned that for his system with the accelerometer, the Jeti Spin has the fastest response.  For the amount of throttle modulation going on in the accelerometer equipped systems, a fast ESC response definitely seems a necessary requirement.

I would imagine the ZTW Beatles ESC would be fine for simpler timers and for use with the KR Timer which does more "thinking" than the ESC itself.
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« Reply #37 on: June 06, 2017, 01:04:55 AM »

Among all ESCs tested, jeti spin is the best.
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