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Servo Reversers and Spektrum
We continue to be contacted by customers regarding the compatibility of our Servo Reversers with Spektrum receivers. After talking with these customers individually, I decided that it might be good to address the issue here, to answer some who may be wondering, but who have not yet reached out to us.
It appears that some modelers have experienced problems when using certain reversers (not ours) with Spektrum radios, and I understand that a spokesperson from Horizon has suggested in various RC forums that reversers of any kind should not be used with Spektrum receivers, as they create some type of interference that can disrupt the receiver's operations, even though they are operating on the 2.4GHz band, which is supposed to be much less susceptible to EMI or RFI interference.
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I'm not sure which reversers have actually been causing problems, but I do know that we have been providing servo reversers for several years now to users of every brand and type of radio system out there, and we have received absolutely ZERO reports of problems or incompatibility with any brand of radio, including Spektrum.
Electronically, there are several ways that the PWM signal used to control a servo can be produced, and it is very possible that some reversers being made overseas use a design that is faulty, and that indeed creates interference. Our reversers, as well as most of the other circuits we make, like Navigation Lights, Servo Speed Reducers, Servo Testers, etc., all use a microcontroller to create the PWM signal, and they do not produce any interference of any kind. There are thousands of our devices in use in models around the world, including reversers, and we've never received a complaint about a single one being non-compatible.
Our reversers "read" the signal from the receiver, do some math on it to switch it from one side of the channel's center to the other, and then send it back out to the servo, all done in a few microseconds! They can be safely used in Spektrum systems. -David
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News from the Bench
Every month or so I get a question from someone who needs to power a servo, or a retract motor, or some similar device, from a separate battery pack. They want to control the device from the receiver, but power it from a different source. It isn't nearly as hard to do this as some modelers think, so I decided to share with you one way this can be done. It doesn't require any special circuits or gadgets, just a standard servo Y or two that are easily modified.
Let's start with the schematic of the "circuit", it is shown below.
(click to enlarge all images)
The red wire is clipped to prevent power from being supplied by the receiver, and a separate battery of the correct size is connected to the open end of the servo Y that is plugged into the receiver. This will allow you to control the device from the receiver as usual, while power is supplied from the second battery.
Below is a picture of a custom wiring harness we made for Greg G's retract system. He wanted to control the two retracts using two separate receiver channels, but needed to power them from a single battery with an EC3 connector. This harness allowed him to do just that.
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So please consider subscribing now. Just click on the blue Facebook link at the bottom of this page, it's that simple. Thanks! -David
Announcing New Ownership of Flying Tiger RC!
I am pleased to announce that Dave's RC Electronics has recently purchased the rights to Flying Tiger RC, and has acquired all of the inventory, trademarks, and production rights to the products made by the company. Founded by Guy Caputo, Flying Tiger RC has been a respected manufacturer of several fine products for the RC community, most notable of them being the Tiger Tray, an aluminum tray (and strap) that holds your transmitter and allows you to fly using your fingertips, rather than your thumbs. Guy and his lovely wife Dianna decided to retire, so I have taken over the company and will continue to provide the quality products and excellent service for which Guy has been known for several years now.
My grandson, Christian, and his fiancé Kaitlyn, will actually be the ones running the new company, and soon they will be rolling out a few changes to everything from the website to the product lineup. Of course, we will still be making and assembling the Tiger Trays, but we'll also be looking at bringing back a few of the products Flying Tiger RC sold in years past, as well as introducing some new products we hope will be useful to the RC community. And everything will still be made and assembled right here in the USA! (Georgia, to be exact!).
Please take a few minutes to visit the Flying Tiger RC website using the link provided. We're still working out a few bugs that have cropped up because we changed web hosting services, so let us know if you have any issues or questions. We'll be at the big swap meet in Perry GA the last weekend in February, we hope to see you all there!