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Model Forum / Radio Controlled / Water Models / July 2005Gadget Poll
Hi, This post is an inquiry to see what kinds of gadgets the rc modeling community might find interesting or beneficial. A couple of friends and I are engineers tired of working for someone else and are evaluating whether creating items for this hobby might be a good area for us to venture into. I doubt we'll spend any energy on battery technologies as we aren't really equipped for that. What would interest you if it were available? Flight dataloggers? Real-time telemetry (engine temp, rpm, altitude, fuel guage)? Video transmission? Frequency scanner to see if anyone is using your channel? Suggestions? Thanks, JustAGuy >Hi, > [quoted text clipped - 7 lines] > >What would interest you if it were available? >Frequency scanner to see if anyone is using your channel? I think a good, calibrated (and cheap) scanner would be welcomed by most modelers. Just as welcome would be a really cheap single-channel synthesized channel monitor, with selectable channel, that would allow you to see if there was anyone else on your frequency before you turned on your system >Suggestions? In my opinion, in the electric boating community, I'd like to see a truly proportional speed control. I'd like one that would allow you to control the motor RPMs directly. Currently, most of the controllers control the speed by controlling the current through the motor. This means that the more the drag, the slower the motor turns. It also doesn't really allow you to control the low-speed too good. I'd like to see a controller that monitors the current (or possibly voltage) micro-fluctuations to detect the true RPM, then adjusts the current to keep a constant RPM for the setting of the throttle stick. You could save a lot of development time if you create a unit that plugs between the motor and a standard electronic motor controller, then monitors the current fluctuations. It then would take the throttle control pulse coming from the receiver, determine what RPM the motor was at, and send the proper pulse width to the standard motor controller to speed up or slow down the motor to the selected RPMs. >Thanks, >JustAGuy Jerry >>Hi, >> [quoted text clipped - 14 lines] > channel monitor, with selectable channel, that would allow you to see if there > was anyone else on your frequency before you turned on your system Having a display on the transmitter that does this for the selected channel makes lots of sense. Turn on the transmitter in listen mode, and let it show you what's already on the frequency before you start transmitting.  SignatureRegards, Bob Monsen If a little knowledge is dangerous, where is the man who has so much as to be out of danger? Thomas Henry Huxley, 1877 A digital Tach that is as good as the now defunct TNC. They went for around $100.00. The cheep units out there are junk. > Hi, > [quoted text clipped - 16 lines] > Thanks, > JustAGuy A Blutooth device that logs flight data. A camera kit that feeds video using a Blutooth device directly to your computer. >A digital Tach that is as good as the now defunct TNC. They went for around >$100.00. The cheep units out there are junk. [quoted text clipped - 19 lines] >> Thanks, >> JustAGuy |A Blutooth device that logs flight data. | A camera kit that feeds video using a Blutooth device directly to your | computer. --- snip --- data logger, maybe. Video feed makes little sence. The effective range of Bluetooth devices is 32 feet (10 meters). SignatureThe Road Warrior Hobbit >|A Blutooth device that logs flight data. >| A camera kit that feeds video using a Blutooth device directly to [quoted text clipped - 4 lines] >Video feed makes little sence. The effective range of Bluetooth >devices is 32 feet (10 meters). Or 100m for Class I devices. Still not enough range and Bluetooth doesn't have the bandwidth for decent video either. The only really viable licence-free video solution (in the UK anyway) is a one-way system with a big receive antenna. You can't get both the range and bandwidth required otherwise. If you're a licensed radio amateur you can crank the power up and have super-fast two-way comms without huge antennas, but most RC flyers aren't HAMs so the market would be tiny. Tim SignatureToday's message was brought to you by Mary, Jane and a big number two. > Hi, > [quoted text clipped - 11 lines] > Video transmission? > Frequency scanner to see if anyone is using your channel? A very small portable spectrum analyser covering the RC band would be fantastic, coupled to a frequency counter maybe...with a little loudspeaker. > Suggestions? > > Thanks, > JustAGuy |
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