So far in the 555 timer series I’ve discussed 2 different modes of operation: Astable mode and Monostable mode. There is however, a third less used mode called Bistable mode where the 555 can be configured to output a high or a low on demand. There are no pesky timing resistors or capacitors. The circuit simple gives a stable high state or a stable low state for it’s output.
Bistable Mode Video
Both schematics below are the same. The top one is a little bit more professional. I included the second for anyone that was intent on following along with the video.
555 Timer | https://amzn.to/2S9aahT
9V Battery Connector | https://amzn.to/2QycVfJ
9V Battery | https://amzn.to/2rCXfJp
Breadboard | https://amzn.to/2Bkrt8k
Jumper Wire Kit | https://amzn.to/2LiAWRZ
Red LEDs | https://amzn.to/2S4lpYy
Pushbuttons | https://amzn.to/2EzUkta
1kΩ Resistor | https://amzn.to/2rz1mpM