This circuit can use a pendulum sensor. We found this configuration in a 1994 publication. The components used are common and the timing is given by the capacitor C1 which can be changed.
This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps....
This configuration, obtained from a 1973 publication, triggers with pulses applied to the input...
Using the RCA CA3018 integrated circuit, this amplifier was found in an article in the August 1970...