SMD Slow Flash LEDs and a PCB

SMD Slow Flash LEDs and a PCB

The LEDs are great, but my creation of the custom 0606 pads did not go as planned.

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*I will get a small commission and it costs you nothing. *
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HEY YOU ABOUT TO POST SOMETHING STUPID:
One of the symptoms is that it causes fluid retention, mostly in the hands, feet/ankles, and face..
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Gear I use:
Bench O'Scope:Hantek DSO2D15

[td]

Suggestions... 1) To print... Most PCB programs have a PCB print function. I can not imagine that what you are using does not have this function, but, if truly not, then look for a .pfd export function. Save the pfd to a temp file and print the pfd image. Here's a scaling tip... Most inkjet printers do not print to 100% scale, even when set to 100%. Mine prints to 98%. This can make it impossible to check tiny pin spacing. So, draw a 100mm reference line on the Comments Layer of the PCB. Check this layer to export/print and print the PCB drawing. Measure the reference line. Adjust the scaling to print a true 100%. I use 102%. Align all components on the printing and proof the pin placements. 2) You are making it even more difficult to solder the SMDs, by starting the first solder pad on the left side, when you are right-handed. I know that you know better. I think you are getting freaked out about SMDs and that is making things even harder. Yes, you have lots of knowledge and experience, but you would benefit by starting fresh with the SMD learning curve. YouTube has excellent SMD soldering videos. Start with known excellent teachers like NASA, EEVBlog, AdaFruit, etc. Watch a bunch of the videos, before trying to solder SMDs again. I think you are making things worse/harder on yourself. Just IMHO. There are lots of other methods, too. Hot air, hot plate, etc. All very DIYable. Find the one that works for you. HTH

[Bruces-Eclectic-World]

Awesome Paul... SMD's? Your a brave sole my friend! Big Clive would be amazed... :-)
Can't wait to see... Hope your doing better from the big C....

🖖
LLAP

[shagreobe]

There you go with the Pitt stuff...Should say We are Penn State lol. nice little project

[KoRntech]

That's awesome, can make a small mockup W.O.P.R. which is oddly relevant today.

[ralphj]

Well done. Not sure which PCB tool you are using but many have a dimension / measure function, always use this to confirm pad spacing etc. All footprint tools are awful to use and downloadable footprints are always wrong.

[retireeelectronics]

SMD is pain, using 0805 so I can place components between pads on standard 0.1 prototypeboard. Mixed results but probably quicker to design boards since I have no more hair to pull out.

[TRONMAGNUM]

Do you still recommend EasyEda for a beginner to design a PCB? I need to design a board that will let me get composite video out of an old Tandy CoCo computer. I have schematics I now need to put them into a gerber so I can send it to PCBway.

[atturkawi]

I need to convert 12v analogue signal 610 milliseconds to a pulse signal 12v from 90 to 130 milliseconds ( adjustable milliseconds by resistor)

(555 timer )


to clean the situation I connected the car horn with the door luck actuator because my car doesn’t make a sound when I locked it by keyless remote so I took a signal from actuator to Relay then connected to battery and horn to let me know if the car locked by hearing a sound

the duration time of beeping 610 milliseconds but in the normal cars it is about 90 or 140 milliseconds
I need to make it like the normal duration time of beeping alarm for the other cars


so I record the Tone sound after installation and calculate the duration time of the existing Tone 610 milliseconds
I need to make 555 timer circuit to generate a pulse with duration time 90 to 140 milliseconds 12v

please show the picture

no 1# the duration time of the signal 610 milliseconds

No 2& 3# what I want

Please any help