How to implement a circuit that briefly changes the potential at the output with any change in the state of the cap?

Question

Electronics

Given:
There is an ESP8266 module in deep sleep mode. In order to wake it up, you need to "pull" its RST output to the "ground".
There is also a reed switch with normally closed contacts. And a magnet.
Task:
Any change in the state of the reed switch should wake up the ESP8266 from "sleep". That is, as soon as I bring the magnet to the reed switch, the RST output of the controller should be pulled to the ground, but for a short time. The same should happen when the magnet moves away from the reed switch.
At the moment I can not think of a scheme that implements such functionality. That is, I just need a template. Details, time delays, currents, voltages, etc. - secondary.
Thank you very much in advance

Answer 1

Looks like you found exactly what you need.

Answer 2

It 's called a single vibrator