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Eggtimer Build_1.53
A
100
LDA <50-500 by 50>
B
10
Burn/Coast Samp/sec:
100
Interval (ms)
C
2
Descent Samples/sec <1,2,4,5,10>
500
Interval (ms)
D
0
Main Mode <0-Off, 1-IGN, 2-Servo CCW, 3-Servo CW>
E
400
Main Altitude <100-2000 by 50, 0 @ Apogee>
F
1
Main ON-Time <1-9,0-Cont.>
G
0
CHB Mode <0-Off,1-Ignitor,2-Servo CCW, 3-Servo CW,
H
1
CHB ON-Time <1-9,0-Cont.>
I
1
Burn Timer <1-20>
J
0
Airstart/Delay <0-9>
K
0
Telemetry
O
Comments:
Hit the Enter key a few times, you should see the P: and A: values change slightly. If it looks
pretty much like this, then Congratulations! Your Eggtimer is now working.
To test the deployment channels, you will need to connect a battery to the BCHA/BCHB
terminals, and add some kind of load to the output channels. A common 9v battery makes a
good test battery, you can get a battery clip from Radio Shack and simply tack-solder it to your
tinned pigtails. Make sure that you match the polarity, red goes to "+" and black goes to "-".
For a test load, we recommend using the bulbs from a strand of miniature Christmas tree lights
(the little ones, not the big ones!), simply unravel a few from the strand, cut them off from the
strand leaving about 1" of wire on them, and strip and tin about 1/8 " from the wire. Tack-
solder them to the pigtails of the Main and CHB channels. Note: NEVER test with a live
deployment charge! If you need to test your battery/igniter combination, use ONLY an igniter,
preferably at least 5 feet from you and the Eggtimer.
IMPORTANT: You must connect some kind of resistive load across the deployment
terminals, such as a Christmas tree light bulb or #32 nichrome wire. DO NOT SIMPLY
SHORT THE TERMINALS TOGETHER WITH A PIECE OF WIRE TO TEST THE
CONTINUITY! If the deployment channel fires, it WILL damage the output transistors if
you are using a battery such as a LiPo that is capable of sourcing more than 8A of current.
When you bring up the Eggtimer programming screen, hit Enter, and both the CHB and Main
statuses should change from 0 to 1, indicating that there is continuity on those channels. If you
remove one of the bulbs, the status for that channel should go from 1 to 0.
To perform a deployment test, hold the button down while powering on the Eggtimer. You
will see the MON> prompt, which means that it's in the utility monitor mode. To test the
deployment channels, hit the "M" key to select the Main channel, and you will hear a
continuous tone to let you know it's in test mode. Press the button down, and the Christmas
Flight Settings
4-Airstart, 5-Airstart w/o Breakwire,6-Delay>
Options: Esc, A-O, ?
<4,5,8,10,15,20,25,33>
T:23.50
P:97804.00
A:975.39
Main:0
CHB:0
Batt:3.12
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