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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › A better user interface for radios.
11-02-2004 01:56 AM  13 years agoPost 1
TurboStew

rrApprentice

Ft Collins, CO

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When are radio manufactures going to put a curve fit function for servo outputs so you can get rid of geometry (like ECCPM) non-linearities and whatnot? My 9Z is a joke.

I want a radio programable by asigning equations to variables. For example:

Curve1X = 0.0, 0.2, 0.3, 0.4, 0.5, 0.6, 1.0
Curve1Y = 0.0, 0.25, 0.4, 0.7, 0.8, 0.9, 1.0
Servo1 = JoyStick1 - 0.5 + Trim1*0.1*(1.0-JoyStick1)
Servo2 = ArcSin(JoyStick2 / 2.0) *2.0 + Trim2*0.1
Servo3 = Curve1(JoyStick3) + Trim3*0.1
Servo4 = Limit(1.0-Servo3+Knob1*0.1, -1.0, 1.0)


CurveX is the input points for a curve and CurveY is the output points. Servo1 is for the throttle with trim only affecting bottom end, Servo2 is elevator with arc correction, Servo3 is a curve applied to JoyStick3 and post trim. Servo4 is a reversed output of Servo3 with a aux rotory knob for trim and limited output. You could get as crazy as you wanted here! I think this would be sweet. There needs to be an "engineers" radio out there. I keep thinking of programming a little interpreter engine for a TI 2812 DSP. A terminal emulator app on a PDA and voila, a real programmable radio! Maybe I will gut an old Airtronics Stylus and put my own board in it. If we only had the crack on the Futaba 1024Z PCM protocol!

8.5 pound 90 birds Rock!

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11-02-2004 06:22 AM  13 years agoPost 2
TMoore

rrMaster

Cookeville, TN

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A terminal emulator app on a PDA and walla, a real programmable radio! Maybe I will gut an old Airtronics Stylus and put my own board in it. If we only had the crack on the Futaba 1024Z PCM protocol!
Jump on out there, I'm sure MarkF would dig right in there with you. We need all the smart guys we can get on this problem.

BTW, it's voila.

TM

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11-02-2004 03:28 PM  13 years agoPost 3
TurboStew

rrApprentice

Ft Collins, CO

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Maybe not smart enough to spell "voila".

8.5 pound 90 birds Rock!

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11-02-2004 03:33 PM  13 years agoPost 4
steve69

rrApprentice

Berkshire, UK.

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Sorry to say this but that made even less sense than the futaba manual?

I thought you wanted to make it simpler?

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11-02-2004 04:57 PM  13 years agoPost 5
Colibri

rrKey Veteran

The Netherlands

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If you really want to get rid of non-linearity you need to take into account the mechanical layout of the helicopter. For instance if you want the link on a servo to travel linear you need to take into account the length of the servo arm to be able to calculate the angle the arm must rotate to achieve a certain amount of linear movement..

With your approach this could be possible but it is going to be a pain to make a slight adjustment in the field without a master in geometry.

However I like this idea a lot. I have always wondered why the UI on a very capable Tx like the 9Z or 10X is so non intuitive.

Tim

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11-02-2004 05:00 PM  13 years agoPost 6
TMoore

rrMaster

Cookeville, TN

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Hey TS,

We feel your frustration about the radios but when it is just a challenge for some of the fellas to get their gyros set up properly, get their engines tuned correctly, balance their rotor head/blades system and properly set up pitch/throttle curves on top of reliably building their machines so they won't come apart in air, well, the curve fit function may have to wait a while.

Whaddyathink?

TM

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11-02-2004 05:16 PM  13 years agoPost 7
Colibri

rrKey Veteran

The Netherlands

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Recently I wanted to program this:

Servo7 = 3PosSwitch(SwitchC, 0, 35, 45)
in Normal mode and
Servo7 = 3PosSwitch(SwitchC, 0, 45, 50)
in idle up1

I wanted to use a 3 pos switch to switch the TJ between Off, 1500RPM, 1600RPM in that order
so not 'Off' in the middle. And of course the same with different RPM's in idle up.

This proved to be quite cumbersome on a 9z (but not impossible) while all I wanted is to assign values to switch positions where 0 is not the center.

Tim

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11-02-2004 07:43 PM  13 years agoPost 8
TurboStew

rrApprentice

Ft Collins, CO

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I realize this radio is not for the masses, but there are some of us who will trade simplicity for unlimited programability. If you break it down to the utmost in programability then, well, you will be modifing your embedded software directly. I want to move one step above this.

Maybe an open source with a circuit board and components kit is the way to go. Maybe I should make a kit to retrofit some cheap radio and supply the source code. We then can all contribute to the functionality.

8.5 pound 90 birds Rock!

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11-02-2004 07:44 PM  13 years agoPost 9
TurboStew

rrApprentice

Ft Collins, CO

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Not simpler, more flexable.

8.5 pound 90 birds Rock!

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11-02-2004 10:07 PM  13 years agoPost 10
TMoore

rrMaster

Cookeville, TN

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This precisely where the ATX Vision came from which was a product of the ATRCS unit.

TM

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11-03-2004 12:46 AM  13 years agoPost 11
TurboStew

rrApprentice

Ft Collins, CO

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TMoore,

8.5 pound 90 birds Rock!

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11-03-2004 04:36 AM  13 years agoPost 12
TMoore

rrMaster

Cookeville, TN

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TS,

The original Module 7 from ATX was a hardwired radio and a company in CA came up with one of the first radios that used a microprocessor right after JR came up with their Galaxy 8. You sent your Module to ATRCS and they converted it to a microprocessor radio.

This was called the ATRCS, then Airtronics created the Vision radio as a regular production unit with the ATRCS unit.

All these radios were designed for Sailplane use.

TM

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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › A better user interface for radios.
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