User Manual and Instructions
Contents
1. a Stage 2 Stage 1 RED ARMED LED DIP Switch DIP Switch FAILSAFES O FS1 Stage 1 S Igniter Electric Match Ooo eee errr 5 FS2 O 2 7 ST2 STA 7 0 XDSRT 1 GREEN POWER LED 2 ons i XAVIEN g Q E 5 www xavien com O Battery tage Igniter Electric Match Q Battery MCU The XDSRT 1 is designed so that the countdown for stage 2 does not begin until after stage 1 has completed its cycle Figure 2 gives a close look at the DIP switches and explains the time value of each switch Stage 1 and stage 2 are independent of each other Table 1 gives examples of a few settings For example to get a delay of 10 seconds you would turn ON switch 2 and switch 4 2 seconds 8 seconds 10 seconds the rest would be OFF The timing for stage 1 begins counting down as soon as BOTH failsafes are OPEN If the unit is powered up with both failsafes OPEN the unit begins counting down immediately Make sure fail safes are in place BEFORE applying power to the unit Figure 2 DIP Switch with all switches in the OFF position ROORRE Switch Time Value 1 second 2 seconds 4 seconds 8 seconds 16 seconds 32 seconds O O01 AIIN IMPORTANT Switches MUST be set prior to turning power on to XDSRT 1 The microcontroller ONLY reads the switch settings on power up If changes need to be2. Since the use and application of this equipment are beyond our control the purchaser or user agrees to hold XAVIEN and their agents from any and all legal claims demands actions debts liabilities judgments costs and attorney fees arising out of claimed on account of or in any manner predicted upon loss or damage to property of or injuries to or death of any and all persons arising out of the use of this equipment Due to the nature of electronic devices the application and environments for these devices the possibility of failure can never be completely ruled out It is the responsibility of the purchaser or user of this equipment to properly test and simulate the actual conditions under which the device is intended to be used to ensure the highest degree of reliability safety and success Product Warranty The XDSRT 1 has a warranty of 1 year starting from date of purchase as long as all the guidelines have been followed that are outlined is this document Any improper use or carelessness on the part of user will void the warranty If your unit has problems send an email to RMA XAVIEN COM Once this has been done XAVIEN will send you a return material authorization RMA number that you need to include with your unit DO NOT send any units back to XAVIEN without this RMA number if we receive product with no RMA it will NOT be accepted and mailed back unrepaired Revision History PCB REV 1 00A DATE 08 04
3. xavier XDSRT 1 Xavien Dual Stage Rocket Timer User Manual and Instructions XAVIEN PO Box 7433 Goodyear Az 85338 www xavien com System Overview The XDSRT 1 is a precise 1 second to 63 seconds dual stage timing system used to control the ignition system in a rocket Time settings are set using a 6 position DIP switch that eases programming It runs off of an external DC power supply ranging from 7V to 15V a 9V alkaline battery is ideal for powering the XDSRT 1 Other applications such as relay switching and solenoid driving can also be implemented using the XDSRT 1 Various igniters electric matches may be used because of the versatility and high current FETs used in the design of the XDSRT 1 these include but are not limited to Daveyfire and OXRAL Specifications Battery external 7 15 VDC PEAK Firing Current 2A 10sec Dimensions 1 225 0 05 W x 3 8 0 02 L Weight without battery 21 4 grams Nominal Battery Load 15mA Delay Settings 1 second to 63 seconds in 1 sec increments Operational Overview Figure 1 depicts the component layout of the XDSRT 1 The switches are labeled 1 through 6 accordingly The ON position for the switches are labeled at the top of each DIP switch pack Figure 1 XDSRT 1 Assembly
4. igniter electric match Make sure you hand tighten ONLY too much torque can damage the unit screw terminals after igniter electric match has been installed Figure 5 Pyrotechnic device install location Igniters Electric Matches he Recommended igniter electric matches The XDSRT 1 has been tested using the Daveyfire 28B 28BR and OXRAL igniters electric matches It is recommended that you test the model you are using to insure proper ignition occurs We here at XAVIEN have used igniters electric matches that are easily available to us for testing If you are using something different than what is listed and want to make sure it will work before buying a XDSRT 1 email us and we will look into testing a unit using your model of igniter electric match Our time is limited so no guarantees on how fast we can do this Igniter Electric Match Sources Manufacturers e Daveyfire 7311 Greenhaven Drive Suite 100 Sacramento CA 95831 www daveyfire com e Luna Tech OXRAL 148 Moon Drive Owens Cross Roads AL 35763 www oxral com www pyropak com Battery Connections The XDSRT 1 was designed to operate using a 9V alkaline battery We here at XAVIEN recommend using a switch 3A MAX CURRENT to insure ease of use when powering the unit up and down We have equipped the unit with a small green power indicator so
5. made turn unit OFF set switches verify failsafes are in place and cycle power back ON ST1 1 2 3 4 5 6 Off Off Off Off Off Off Table 1 Example of delay settings Switch Settings ST2 1 2 3 4 5 6 _ Off Off Off Off Off Off Time Delay STAGE 1 1 second STAGE 2 1 second ON 1 2 3 4 5 6 ON 1 2 3 4 5 6 On Off Off Off Off Off On On Off Off Off Off 1 second 3 seconds Off On Off Off Off Off Off Off Off On Off On 2 seconds 40 seconds On On Off Off Off Off On Off Off On Off Off 3 seconds 9 seconds Off On Off On Off Off Off Off Off Off Off Off 10 seconds 1 second Off Off Off Off On Off Off On Off Off Off Off 16 seconds 2 seconds Off On On Off On Off On On Off On On Off 22 seconds 27 seconds On On Off Off Off On Off On Off Off Off Off 35 seconds 2 seconds Off Off Off On Off On On On On On On On 40 seconds 63 seconds On On On On Off On_ On Off Off On Off Off 47 seconds 9 seconds On On Off Off On On Off On Off On Off Off 51 seconds 10 seconds Off Off On On On On_ Off Off Off On Off On 60 seconds 40 seconds On On On On On On_ Off Off Off Off Off Off 63 seconds 1 second STAGE 1 19s STAGE 2 34s FAILSAFES OPENED J STAGE 1 delay 19 s STAGE 2 OFF Activate STAGE 1 OUTPUT STAGE 2 delay 34 s STAGE 1 OFF Activate STAGE 2 OUTPUT X
6. the user can easily identify when the unit has power applied It is recommended that the user do tests using their igniter electric match configurations before assuming anything will work This will help to insure that the XDSRT 1 and your configuration will work to your expectations In figure 6 we have a basic diagram of the battery connections that are recommended by us It is always a good idea to insure you have a fresh new battery before any launches occur After all the cost of a battery is nothing compared to the time and money spent on many of our users rockets Figure 6 Recommended battery connections GREEN POWER LED Aueyeg J SUIeyIV A6 POWER SWITCH Setup Sequence This is the recommended sequence for setting up the XDSRT 1 1 2 3 4 g Make sure unit is NOT powered up if it is turn it OFF Set DIP switches to desired time delay both stages Install failsafes making sure screw terminals are not loose hand tighten only Install igniter electric match making sure screw terminals are not loose hand tighten only Install a fresh 9V battery making sure screw terminals are not loose hand tighten only Reversing the polarity of the battery can damage the XDSRT 1 when installing the battery refer to figure 1 for the correct polarity If green LED is ON turn switch to OFF position if you will not b
7. 2003 FW REV 1 00A DATE 08 04 2003 DOC REV 1 01A DATE 08 09 2005 UPDATED LOGOS
8. DSRT 1 FAILSAFES The XDSRT 1 has two failsafes to protect against accidental timer countdowns ignition The failsafes are enabled when FS1 and FS2 are connected together as in figure 3 The unit will NOT begin countdown until BOTH failsafes have been OPENED FS1 is the primary failsafe when FS1 is OPENED ARMED a RED LED turns on letting the user know that the unit is ARMED Before countdown can begin FS2 must also be OPENED usually the rocket does this at launch Figure 3 FAILSAFES ENABLED FAILSAFES FS1 FS2 AEN OS Once a failsafe has been OPENED the only way to reset the failsafe is to turn the power off Once this is done you can ENABLE the failsafe and turn the power back on We at XAVIEN have had good luck using solder as the jumper wires for the failsafes Place the length of solder directly under the engine when it ignites it will melt the Jumper wires solder and countdown will begin Many of our users have launched rockets that are extremely powerful This has allowed them to use the twisted wire technique of connecting the failsafes Basically you take two pieces of wire and connect one end bare wire of each wire to the timer and the other end bare wire twisted to each other around something like your launch pad When the rocket launches the wires are pulled apart and timing begins Figure 4 shows an XDSRT 1 set up using both fails
9. afes with the pull pin and break wire technique To ARM the timers you turn the key lock switch OFF once this is done the RED ARMED LED should activate assuming you have the power from the battery connected and turned on Once the rocket takes off the FS2 connection will be broken OPENED and countdown will begin Make sure you remove the key of the key lock switch before the rocket is launched Figure 4 Basic timer configuration PYROTECHNIC DEVICES 0 e 0 RED LED turns on when timer is ARMED FS1 OPEN 0 oo k zs WOSUBNLX MMM N3IAVX ub LYSAX bis KEY LOCK TO ARM DISARM wee TIMER FS1 Wire loops back where it can be pulled OPEN by the rocket after launch Wire is 2 ____ pieces that have exposed copper twisted together FS2 IMPORTANT All connections FAILSAFE settings and switch position must be set BEFORE you apply power to the XDSRT 1 Pyrotechnic Installation The XDSRT 1 has been tested using various igniters and electric matches To install a pyrotechnic device onto the XDSRT 1 oower needs to be OFF you simply unscrew the terminals located as in figure 5 The terminals are screw based terminal blocks for easy access and reliability User does not need to worry about which terminal goes to which leg of the
10. e immediately launching your rocket This saves on the life of the battery When you are ready to launch turn switch to ON position the XDSRT 1 is ready to go Mounting Installation The XDSRT 1 must be installed securely to prevent the unit from being damaged during use Since this unit does not depend on a g switch orientation of the unit is very flexible The mounting holes are 0 125 this allows various size screws to be used Just verify the clearance of both the screw and the head to insure a proper fit without damaging the unit XDSRT 1 EC 3 8 96 52mm AAAAAAA___ aa 0 175 4 44mm 0 625 15 87mm 0 45 11 43mm 3 325 84 45mm URGENT The XDSRT 1 MUST be protected from ejection charge and motor residue These are corrosive and over time can damage the XDSRT 1 If this occurs the warranty does not cover this type of damage Handling Precautions These units are sensitive to damage from ESD and should always be handled in a properly grounded environment damage from ESD is not covered under the warranty Never transport or handle a rocket with an XDSRT 1 that is powered up and connected to live polytechnic charges When installing an XDSRT 1 to igniters make sure unit is powered off Before cycling power ON verify that both failsafess are ARMED to prevent accidental discharge l Product Disclaimer and Limit of Liability
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