Today new 1000KV(!) igniter module arrived:
It can do 1000KV with 7.4V input voltage, and generate 2cm sparks.
Today I did connect only one 600mAh 25C lipo via a motor controller controlled by Pi Zero, and made 1cm sparks.
I gave 4.05V to input of igniter for 0.21s by "./blink 210000":
Code: Select all
[email protected]:~ $ cat blink.c
int main(int argc, char *argv)
wiringPiSetup () ;
pinMode (1, OUTPUT) ;
digitalWrite (1, HIGH);
digitalWrite (1, LOW);
return 0 ;
[email protected]:~ $
This was sufficient to see more than 3 individual sparks -- and it was really loud!
For some reason youtube does not want to process my .avi video generated with time overlay, so here it is.
180fps played at 30fps, 6 times slower than real:
P.S: Something happened, now video shows up on youtube ...
Since I have control this time over the duration of voltage input to igniter, sparks don't show up in a single frame anymore.
Even the last minus first timestamp of frames with visible spark is 0.581-0.559=22ms long.
The video was taken with raspivid and v2 camera at 180fps.
This is frame just before 2nd spark begins to build up:
In this frame spark begins to build up on left cable:
In this frame spark (blue) can be seen emitting from both cables:
Even more spark:
Spark connects both cables now:
Brighter and thicker spark:
No spark. but picture error on top (white area):
The last frame is the only of above frames with a frame skip (0.592-0.581=11ms).
Same frame skip happens at end of first spark, there that frame is completely white.
The printed millimeter paper shows that cables are a little bit more than 10mm apart.