Delay Timer Based on 555 Timer IC

This is just implementation of delay timer based on 555 timer IC. As it is easy to create from any schematic on bread board, when it comes to create real world usable product, it becomes difficult to make on vero or zero board due to cluttering of wires and PCB becomes handy and good looking along with easy soldering and professional way to make DIY.

Original Author Document : https://elonics.org/adjustable-auto-on-off-delay-timer-circuit-using-555/

Fusion 360 Viewable and Downloadable files : Electronic Design : https://a360.co/31LQqu7 Schematic : https://a360.co/3kAntbj PCB : https://a360.co/2YIfcdF

Please make sure that you understand and read article from original source from where i inspired to make eagle project file for making eagle schematic and board so that you and print and each it at home.

Please make sure that you thoroughly test circuit before making printing or ordering to fab house and this is my first learning experience with schematic and board making so it is proven with errors !!! Make your own judgments and i am not responsible for any mis-conduct due to this or any hazards or loss due to this contents. It's for my educational purpose and you may learn something more from this so sharing it with you, you may please suggest changes as i am very weak in organization of components on board so circuit may become clumsy and tricky.

Please visit original author for any more learning, this is just for sharing of eagle files so that you can modify further for your own purpose and if you wish, you may share with us !

Print it on Photo Paper for color photo printing paper of any good brand like canon or hp on glossy side where we print photo, print in dark black color preferably with mono laser printer with DARK or EXTRA DARK print or max dark printing setting.

Get your copper clad pcb ready with scratching it's copper side with good cleaner like petrol or alcohol after scratching with cleaning material like steel wool we use for utensil cleaning or good scratching material of any type which doesn't damage copper of pcb.

Make iron hot in lenon mode so that i can get max hot possible, after that just switch off iron switch and rub on back side of photo paper which you put on copper side printed paper and blank side you should rub with hard press of iron. You may read/watch videos or instructables on how to make pcb at home for more information.

Remove Paper and each it ..

Make holes for thorough hole components to be soldered ..

You are now ready to use your PCB for delay timing purpose ...

You may change POT from 1M to any of your needed or available components in your tray but it will very timing of delay as well as delay capacitor of your choice.

Although this is not guide on how to make, each of print PCB, it's just make PCB and share it but because instructable is not giving me upload to either rar file or zip file or sch file, i have just included it as image or pdf files.

Please let me know if there is any mistake or errors in PCB and i will try to correct or at least nobody will create wrong item.

I have created/referenced my eagle schematic and PCB with Fusion 360 Schematic and PCB Documents for your better control with latest technology of fusion 360. Link is : https://a360.co/2YIfcdF which is directly viewable from your browser and not required to be downloaded Fusion 360 to view/download it.

Feel free to download and edit if required and you are welcome to suggest better changes to be done as i want to create better looking and best possible routing with PTH and SMD parts versions to make it compact and practically usable product.

Miodule can be used as stand alone module for getting output on preset time and can be used as module if you attach relay part which can be ignored too if you don't put any components there instead you may use relay module and connect output to input of your relay module.

Fusion 360 Viewable and Downloadable files : Electronic Design : https://a360.co/31LQqu7 Schematic : https://a360.co/3kAntbj PCB : https://a360.co/2YIfcdF