Spektrum Sequencer
Line and both channels S#A & S#B. In these cycling sequencers, S#A is for the movement of the servo while S#B is going to be used as a switch. It will trigger the sequencer time- line tick/mark to travel back and forth. • With switch B in position 0 the time marker should be on the right. • Set S#B points 0, 1, 2 and 3 all to – 100%. Point 4 needs to be set to +100% • With switch B in position 1 or 2, the time marker should be on the Left. • Set S#B points 4, 3, 2 and 1 to +100%, and point 0 should already be –100% • Power-cycle your radio. What this does is prepare the switching or controlling channel (S#B) so it will trigger the sequencer’s forward and reverse direc- tions. Once the time cursor reaches one end, it triggers itself to go back in the opposite di- rection. When it reaches the point where the B value changes from +100 back to –100, it will jump into the other direction, creating the cycling effect.
After rebooting the radio, go back to the sequencer menu and select the sequencer you just defined. Change the switch selec- tion from Switch B to S#B (it’s all the way to the end of the switch list). You will immedi- ately notice the little tick mark under the checkboxes start to move back and forth be- tween 0 and 2 every 10 seconds (the time you programmed).
If you access the second screen, the timing cursor should be moving back and forth be- tween points 0 and 3.
This created the cycling function, but we haven’t done anything for the S#A channel, which will be used to control a servo. To be able to edit the A channel for output, it’s usually best to start by changing the switch back to B instead of S#B. This will allow you to manually select which direction you are editing.
For the movement of this channel you
make your changes to the graph in the S#A box. If you want to have a gun turret that just cycles back and forth, make these changes: • Chan A: Select the channel the servo is connected to (Aux1 for example) • From personal experience, since the se- quencer time line moves between Points 0, 1, 2 and 3, I like to reposition the Points on the time line so I have them equally spaced. Point.0 (0%) Point.1 (33%) Point.2 (66%) Point.3 (99%) • To select just a basic channel move-
Example 3:
ment from end to end. Create a curve from Point.0 (–100% to Point.3 (+100%), to create a flat curve use –33% for Point.1 and +33% for Point.2 and remember that you need to make these changes for both directions. We now have created a sequencer that is moving Aux1 back and forth over a 10-sec- ond time period. If you want the channel to move faster you can always reduce the speed of the sequencer from 10 to a lower value, or you can also adjust the time line Points 1, 2 and 3 to be closer together which will in turn create a steeper, shorter curve causing the channel to cycle faster.
Example 3: Basic Switchable Cycler
If you to want the ability to turn the cycling
action on and off (windshield wipers, for in- stance), then you would leave the Channel selection entry as Inh and instead create a mix. • Change Chan. A in the sequencer to
INH. • Go to the Mix menu. Select a mix, preferably in the 9–16 range (so you won’t be wasting an “expo-able” mix). Select the Nor- mal mix mode. • Set the mix’s Master channel to the S#A channel from your basic cycler, and the slave channel to the desired output servo. • Set the rates to 100% for both entries,
with 0% offset. If you need to have different amounts of travel, you can adjust the rate values later. • Select the switch that you want to acti-
vate it, and the positions you want it to be active. Watch the display as you toggle the switch on and off. Alternate setup: • Set the mix’s Master channel to S#B. This will cause the slave channel to go end to end, but still over the 10-second period. (I haven’t found a use for this yet, but it works. If you find one, let us know!) • The other mix settings from above still
apply. Here’s a video showing a sequencer that
the speed as been reduced as such to control a light kit to create a flash and strobe effect.
http://tinyurl.com/beaotd6
Example 4: Continuous Random Movement Now that we have reviewed the steps to create a basic cycling sequencer, you can cre-
ate a complex sequence of events using two cycling
sequencers, each with different
speeds for each direction and from each oth- er along with different channel travel curve for both channel S#A functions to create a Random Cycling Sequencer. 1. Creating the basic cycling sequencer,
set Forward to 10, Reverse to 20. Use the steps in Example 2 above to do that. 2. Set any desired travel positions for S1A for one direction while setting a different shape for the other. 3. You have now created a minor random moving sequencer. It has different speeds and different movement for each direction. 4. Create a second basic cycling sequencer,
set Forward to 20, Reverse to 30 (notice these values differ from the from the previ- ous random sequencer created). 5. Set any desired travel curve for S2A for one direction, set a different curve for the other direction. Make sure that both curves from the two sequencers do not match. You need four different shapes! 6. Go to the Mix menu. Create a mix from
S1A to the desired servo channel (suppose AX4). Create a second mix with S2A as the master but use the same aux channel (AX4). This causes those four graphs to be applied to one channel.
7. Adjust the mixing rates to give move-
ment. I use 100% all around and make my changes in the sequencers, but you could change the mix amounts. Changing them in the sequencers does provide more flexibility. 8. On the first mix (S1A > AX4), use S1A
as your Switch selection, active in positions 1 and 3. 9. On the second mix (S2A > AX4), use
S2A for the switch, again active in positions 1 and 3. 10. This means for each mix there is a time
when the sequencers are in Pos.2 and the mixes will be OFF, resulting in the normal channel input to control the servo action. It will do this at full speed, so in order to keep everything moving smoothly, access the Ser- vo Setup menu and change the speed of the random moving channel (AX4 in this exam- ple) to 10 for both directions. This will slow down the action when the channel is return- ing to center or returning to the controlled se- quencer position without jumping to position but since the lowest selected speed for either sequencer is 10, the jump will not be visible nor does slowing down the actual channel have any effect on the random effect.
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MARCH 2013
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