Eric M. Jones
Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts
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 Posted: Thu May 01, 2014 6:13 am Post subject: Ray Allen RP3 led position indicators |
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| Quote: | I am wanting to parllel two Ray Allen RP3 led position indicators useing
only one POS5 position sensor. RAC said that thay wont work just parelling
them and that I need to add another position sensor or a switch which I
would rather not do. Can anyone suggest an electrical ckt. that would work
for this? Thanks Bill S. |
I predict that trying to convert the potentiometers to drive the RP3 position indicators if fraught with peril. I have done it and abandoned the idea in favor of driving the trim box potentiometer with a higher voltage (regulated 12V) and doing the conversion at the RP3 with a simple 1:12 voltage divider (another pot).
We have previously mentioned on this site that the problem with the RP3 is that it expects a MAXIMUM input voltage of 1.2V and each digit is therefore 0.12 volts, which is below the noise level for several lower of the LEDs.
Years ago. I figured that the real problem was that push buttons had no memory for position, so I built the True Servo Control for Mac/RAC trim boxes, TSCMR. You turn a knob...and that's where the trim box sets the trim. Period. The indicator is the pointer on the knob. You can still use an LED indicator if you like, but it is not necessary since the knob pointer is the indicator. I don't supply the knobs or pots. My "Cessna-Type Trim Wheel" used to drive the TSCMR, but anyone can make a suitable knob and pot. You could even put one inside your control stick. See attached.
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| Description: |
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Download |
| Filename: |
TSCMR_Installation Manual.pdf |
| Filesize: |
416.51 KB |
| Downloaded: |
260 Time(s) |
_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net |
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