Started by Phil_G, April 12, 2010, 01:20:38 am
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Quote from: Phil_G on July 22, 2011, 14:18:38 pmAnyone remember the Remcon Versatile 12?It was a kit-build reed set, could be built with up to 12 channels. It was bi-simul across the left & right hand switches and had a centre-loaded 27mhz aerial.The reed tones were adjusted with slider pots and were notoriously unstable.The relayless receiver was huge by todays standards, 3" x 2" x 1" and a full installation with DEACs and bonner servos would weigh almost 2lb.Back in the day TM mine was built by my Dad by copying a clubmates unbuilt kit - I was 11 or 12 and although he'd taught me to build small electronics bits & bobs by then, he didn't quite trust me to do the Remcon on my own, so he did most of it & I 'helped'.I remember pauses in its construction as he saved up for the next part - reed bank, crystals, servos - all very expensive at the time.So 45 years on, thanks to pal Shaun, this one arrived as an empty case and was therefore ideal as a 2.4ghz conversion project. The switches were the the hardest part to source - Remcon switches were very clicky, noisy things and mounted in a thin-steel case to make it worse. The ones I eventually found are identical in every way including the noise. This used the last remaining reeds emulation prototype pcb, the new pcbs are a bit smaller and neater with fewer components - see previous post. It has the new firmware with variable-speed servo-slow on all channels to emulate the old, slow, reed servos. The pot on the bottom right controls the transit speed.As you can see theres been no attempt to retore it aesthetically, I kinda like the 50-year old look.[attachimg=1][attachimg=2]CheersPhil
Quote from: Da ManualThe software has an additional feature for sequential flyers. If the model is electric motor powered then we need some way to operate the ESC. Consider for a moment what we are trying to emulate. A small diesel would be refuelled, started then run flat out until the tank drains a few minutes later, when it cuts and down we come. For electric flyers we need to replicate this sequence, which the encoder does using the throttle channel, where of course the ESC would normally be connected.For this purpose, a motor run timer is included which can be set to one, two, or four minutes.Once one of the three timer values is selected, on the next power-up, the encoder is primed for a motor run and will emit a trill sound as a warning. Rudder operation can be checked, and when you're happy and ready to go, hold rudder for a full 5 seconds. This will start a 5 second pre-start delay with more urgent audible pips before slowly building the throttle to full, where it remains for the duration of the motor timer, at which point the motor automatically cuts just as a diesel would run out of fuel.Operational safety being paramount, during the pre-start delay a warning LED flashes and a buzzer sounds to indicate that the motor is about to start itself up. This is a final warning to get your fingers away from the prop. If at any stage before launch you wish to terminate the countdown or cut the throttle, momentarily switch off the transmitter. The throttle will immediately be closed and the timer will be cancelled. This is a safe 'panic' response to an unexpected arrival or crash, where the motor could be stalled, and there is no time to cycle through throttle settings. Simply switch off the transmitter and the motor will cut.
Quote from: 2.4G Shaun on June 19, 2011, 12:35:09 pm******HELP PLEASE ********Hi. I urgently need some of the following valves and bits to repair some of the exhibits in Phil's and My museum collection.DCC 90 ( 3A5 )DK 91 DK 92DL 92DL94 ( 3V4 )DL 96HiVAC XFY 34HIVAC XFG 1OC 71 & OC 72 Transistors3 to 5K ohm relays (preferably siemens high speed type but anything will do)Any old but good Hunts capacitors various values CheersShaun
Quote from: 2.4G Shaun on December 15, 2011, 22:53:29 pmAlways wanted one of these sets as a kid.. It seemed a much more logical way to configure a reed set...
Quote from: Phil_G on November 28, 2011, 23:50:56 pmLast week I bought an early 1970s Macgregor Digimac 1+1 transmitter for £14 on ebay.In its time this was 'half a step up' from the single channel radios of the period, having proportional rudder and a sequential 3 position throttle. . . . . . . . . . Cheers Phil
Quote from: Phil_G on January 01, 2012, 12:37:49 pm. . . . Shaun will know your Digimac inside out, hes a big macgregor fan, I think I remember him saying that the digimac tx had two identical batteries. . . . .
Quote from: 2.4G Shaun on January 04, 2012, 14:49:46 pmI hope to be the first person ever to prop hang a model on Reeds
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