Programmable Elevon and V
Contents
1. FIAMTAONICS DIGIMIX II PROGRAMMABLE ELEVON AND V TAIL SERVO MIXER INTRODUCTION Thank you for your purchase DigiMix lIl is an advanced electronic servo mixer for radio controlled flying wings and V Tail aircraft It has a number of features which are normally only found on computerised radio systems allowing customised set up of the control surface movement The amount of servo movement for elevator and aileron rudder flying wing V Tail aircraft respectively may be individually programmed from 1 to 120 of standard movement giving the ability to increase or decrease the sensitivity of each depending on pilot experience This feature makes DigiMix ll ideal for beginner and intermediate pilots where sensitivity of elevator and or alleron rudder may be increased as pilot ability improves Experienced pilots may increase sensitivity beyond the normal range offered by standard radio equipment by programming full 120 movement for extreme and fast manoeuvres DigiMix Il uses a powerful RISC processor and well designed software for reliable trouble free operation FEATURES Independently programmable elevator amp aileron rudder servo travel for customised sensitivity Calibration feature detects centre servo position for better output symmetry Configurable servo reverse Programming interface uses transmitter control sticks no switches on the device setting retained during power off RISC processor driven Smooth2. ed maximum throw is reached The mixer will not allow the servo to move past 120 of normal movement For technically minded people this relates to 0 6ms on either side of the centre pulse 6 To activate the servo reverse feature once the servo has reached maximum position and stopped moving keep the stick at full movement for about 2 seconds You will notice that the servo begins moving in the opposite direction to indicate reversing has been applied 7 To store the desired position to memory simply move the aileron stick to the left or right while keeping the elevator stick centred until the servos jump back to the centre position You are now ready to set the aileron throw 8 Set the maximum aileron travel by moving the aileron stick left or right until the desired maximum throw is reached The mixer will limit the throw to 120 of normal movement 9 Apply the reverse feature if necessary as described in step 6 10 Once the servos have reached the desired maximum throw move the elevator stick up or down while keeping the aileron stick in the centre position 11 The servos will jump back to the centre position and perform normal mixing to confirm the programming sequence is complete 12 Power off the receiver 13 Remove the jumper and store it in a safe place for when you next want to program the mixer 14 That s it Your settings have been stored to memory and will remain like that until you perform the programming se
3. g this setup procedure Please make sure you are able to plug and unplug the mixer leads into the receiver while setting up If this is difficult to do while the receiver is fixed in position please execute this setup procedure before installing your receiver You will need to determine which way the control surfaces move when the servo moves in a particular direction so either layout your servos in their correct orientation or mount them in position for this procedure Remove the programming jumper See FIG 1 Connect the servos to the mixer See CONNECTIONS for details Connect the mixer to the receiver s Elevator and Aileron output sockets Turn on your transmitter and receiver and make sure that when you move the elevator stick on your transmitter both control surfaces elevons or V Tail move in the same direction If they do not move in the same direction swap the Elevator and Aileron leads into the receiver 5 For both delta wings flying wings included and V Tails both surfaces should move up when up elevator stick down is given If your control surfaces move down when you give up elevator either switch your elevator servo reversing on or swap the servo leads into the mixer Doing either has the same effect dont do both 6 Now set up the aileron input For delta wings flying wings included when you give right aileron your right control surface should move up and your left control surface down as viewed from the rear
4. of the aircraft looking forward For V Tails right aileron should move the right control surface down and the left control surface up as viewed from the rear of the aircraft looking forward Use your aileron servo reversing switch to set up the correct movement for the type of wing delta or V Tail you are flying If you don t have a servo reversing switch see step 6 of PROGRAMMING to activate the built in servo reversing feature ae ee ae PROGRAMMING Programming the mixer allows you to independently set the amount of servo movement for each channel The movement can be set from 1 to 120 of normal movement with 1 resolution To program the mixer 1 Make sure the mixer is connected to the receiver and the servos correctly connected to the mixer with the receiver power off 2 Connect the programming jumper provided across the programming pins see FIG 1 3 Make sure the transmitter is on with the control sticks and trims in the centre position and then turn on the receiver 4 This is important Do not touch the control sticks on the transmitter for at least 1 second after you have powered on the receiver During this time the mixer will calibrate itself on the centre positions of the 2 WWW FIRMTRONICS COM control sticks Once it has locked onto the centre pulse the servos will move to the centre position if not already centred 5 Set the maximum elevator travel first by moving the elevator stick up or down until the desir
5. quence again Power on the receiver with the jumper removed and confirm that the travel movement is within the programmed limits for each channel FINAL CHECK Make sure your servos plugs are fully inserted into the mixer and your mixer is inserted properly into the receiver Turn on your transmitter and receiver and double check that your control surfaces move in the direction you expect them to Happy flying NOTE You do not have to set an upper and lower limit The limit chosen either above or below centre position will be used as the upper and lower limit 3 WWW FIRMTRONICS COM Manufactured by www firmtronics com info firmtronics com WARRANTY FirmTronics guarantees this product to be free from defects in materials and workmanship for a period of 90 days from the original date of purchase verified by a sales receipt This warranty does not cover incorrect application incorrect installation components worn by use reversed voltage improper voltage tampering misuse or shipping Our warranty liability shall be limited to repairing the unit to our original specifications and in no case shall liability exceed the original cost of the product By the act of installing or operating this mixer the user accepts all resulting liability We reserve the right to modify the provisions of this warranty at any time without notice
6. servo travel Low power consumption Extremely compact and light weight TECHNICAL INFORMATION Input Timing Resolution 0 625us Mixing NOTE Supplying more than 6 volts to the mixer could cause permanent damage Please only use 4 cell battery packs NEGATIVE POSITIVE CONNECTIONS SIGNAL Figure 1 on the right illustrates the JR amp Futaba compatible output connectors as viewed by looking directly at the connector pins with the circuit board on the underside The input leads are connected to the receiver not shown and are marked as Input Figure 1 Output connector Figure 2 on the left shows DigiMix Il in programming mode Note the jumper is inserted on the left of the servo connectors Please also take note of the orientation of the 3 way servo leads the orange signal lead is on the right See Figure 1 for correlation Figure 2 Programming mode Jumper ON WWW FIRMTRONICS COM Figure 3 on the right shows DigiMix Il in normal operation mode Note that for normal operation the jumper must be removed with the programming pins exposed The jumper position is clearly indicated in Figure 1 Figure 3 Normal mode Jumper OFF CALIBRATION NOTE This mixer has factory settings that make it compatible with radio systems delivering a 1 2ms pulse to the servos with the servos centred by a 1 5ms pulse If your system is different to this please go the PROGRAMMING section before executin
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