My shed ,workshop,darkroom,studio. the two pictures were taken , dev, and printed in the shed.the exploding car screen i was not able to use the same trigger i had used for the bulbs so i worked out another type and this worked just as well, and still cost nothing!!. (screen smashed by a hammer.) BULB and HAMMER SHOT ,home made trigger with a micro switch added in so that i could override the system and fire the flash by hand ,as you can see i fired the flash 2 times by the override switch then hit the bulb with the hammer smashing it and fireing the flash for the 3rd time giving the 3 hammer positions on the picture ALL taken with an olympus om2n on ilford FP4 plus film and photos taken of old prints with the cameras i use now. ( taken about 1990.)