PCB DESIGN - All In One v2.5 - 32 inputs with 74HC4851

[reswin]

Hi, JunRin
Where is your location?
If you in Jakarta, you can find ATMega and other components (without 74HC4851) in Harco Glodok,
If not, try this http://www.digi-ware.com/dw.php?p=search_result&keyword=&method=contain&category=3005&pg=4

[JunRin]

Hi, JunRin
Where is your location?
If you in Jakarta, you can find ATMega and other components (without 74HC4851) in Harco Glodok,
If not, try this http://www.digi-ware.com/dw.php?p=search_result&keyword=&method=contain&category=3005&pg=4

Hi reswin,

Thank you very much.
I'm in batam, i also tried looking at SG but also difficult to find there both Atmega and 74HC4851.
Are you using this all in one v2.5 if so where did you buy your parts?

[reswin]

Are you using this all in one v2.5

Yes

if so where did you buy your parts?

I bought all the components (except 74HC4851) in Harco Glodok, Jakarta.
I bought 74HC4851 from Synthex.

I suggest you order 74HC4851 and Atmega from Synthex
(Shipping takes about 2-3 weeks to Jakarta)

[SergejBumDrum]

Is it the same thing 74HC4851 and 74HC4851N?
if not which to use?

[jman 31]

Is it the same thing 74HC4851 and 74HC4851N?
if not which to use?

Yes either should work. Just make sure you are buying the DIP package.

[AnjiN]

Can I use 74HC4851D? According datasheet, the package is SOIC.


Many thanks!


AnjiN.

[Firelord]

Can I use 74HC4851D? According datasheet, the package is SOIC.

If you can handle SMD components then yes. However, this design (All-in-one v2.5) requires the PDIP package, so in case you buy the SOIC version you will have to make a SOIC→PDIP adapter or change the PCB layout.

[timekeeper]

Is it my idea, or this design does not require a HiHat Pedal Input selector???

[timekeeper]

Is it my idea, or this design does not require a HiHat Pedal Input selector???

I think I figured it out myself... HiHat switch has nothing to do with the pcb but with the input schematic... Silly me!

[timekeeper]

i know that some have posted pdf's for this board, but seeing as i had slight issues with the measurements i created my own and thought that i would post for the good of the project.

I don't seem to understand the meaning of the pads in the red circles:

Could someone please help me understand???
Also I can't find out where to solder the Low/High Impedance switch...

Edit: I think I figured out that the 6 pads in the big circle must be jumpers reversing something. That's fine. Still no luck with the 4 pads in the small circle and where to solder the HiHat Impedance switch...