Tom ARLISS- NH said...
I would like an explanation on why 1/2 and .5 don't work. Also is there a way to get data faster than CON 1?
Thank you for your help with the programming,
logInterval CON 1 ' choose 1,2,3,4,5,6,10,12,15,20,30 seconds
IF logInterval=0 THEN GOSUB RTC_read ELSE GOSUB RTC_sync
logInterval CON 0 ' choose 0,1,2,3,4,5,6,10,12,15,20,30 seconds
' paces data logging to the number of seconds specified in CONstant "logInterval"
buffer=logInterval*200 ' this variable is used as a temporary counter
buffer=buffer-1 ' this countdown is an escape from loop in case RTC fails
LOOP UNTIL second<>second0 OR buffer=0 '
second0=second ' change, update old value for tracking
LOOP UNTIL second.NIB1*10+second.NIB0//logInterval=0 OR buffer=0 ' wait for log interval to arrive
' DEBUG CR,?buffer
GOSUB RTC_read '<---- read, not sync
Mark in NH said...
Sylvie,·· Let me clarify. I said: In the past, our payloads have·come out ahead of (above, or behind) the parachute so the parachute·opens·above the payload.
What I meant to say was that, in the past, our·payload comes out first and the parachute second (opening above the payload.) The ARLISS guy suggests the opposite: The parachute comes out first, followed by the MAWD-BOE "satellite" (*on top of the parachute.) Will it open...?
Mark in NH said...·If we do use a flare, etc: 1) Black Rock is a dry lake bed (so they say); and 2) We'll be sure to consult Pavel!
Mark in NH said...
Attached is a photo that explains why we want the parachute to work well... and what we don't want...~! One of the ARLISS guys sent it to Sean to let us know what could happen if things get ugly at deployment time.
Mark in NH said...······· 'Chute' is short for parachute. The pilot 'chute is a smaller parachute (sometimes called a drogue parachute) that pulls a larger parachute out. Wa the MAWD attached. tch some of the faster dragsters on TV and I think you'll see one.
Sylvie - How does the pilot 'chute attach to the main parachute...?Question #2: Should we shield the MAWD-BOE from the DC 20 locator/ transmitter (using something like an aluminum foil Faraday shield...?) Could the DC 20's transmitter's signal wreak havoc on the MAWD and the BOE? (*We'll try to ground test this at tomorrow's practice.) The transmitter is on the opposite side of the board from the MAWD-BOE.
As Christopher mentioned, there is an article in the month's NAR Sport Rocketry magazine about the exact Garmin transmitter we're using (Astro GPS - DC 20 combination.)
Our biggest qiestion is static test question #1: why did the data flow stop?
PS - Parallax has BOE Stamps on sale all weekend for on a mere $49. Tracy, should we spend the big bucks and update to another Stamp? Which do you suggest?