Breadboard layout for LCD & 8 buttons with Repetier firmware Hi I have created a breadboard layout for using 8 buttons and a LCD screen with Repetier firmware. I wondered if someone could validate this layout as being correct? I am planning to create a PCB if this is right so I'd better get this right up front! I am not sure if I need 8 x 1k resistors for each button - maybe they could share 1 pulldown resistor instead of 8 separate resistors? Any other feedback is welcome! TIA s1uog8.png mod_embed_images_loadimage('3de66702ed463184be249891a60a21c4', '/forum/thumbcache/b5b/bb4/ff8/99c/9e5/19a/51c/7f7/c8b/141/63_800x400.png', 'http://i45.tinypic.com/s1uog8.png', 'https://reprap.org/forum/addon.php?267,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi45.tinypic.com%2Fs1uog8.png', '', 130308, 800, 400, 'Loading image ...', false); https://reprap.org/forum/read.php?267,130308,130308#msg-130308 Fri, 16 Oct 2026 05:11:11 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?267,130308,161591#msg-161591 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,161591#msg-161591
[forums.reprap.org]]]> peter6960 Repetier Fri, 19 Oct 2012 03:28:10 -0400 https://reprap.org/forum/read.php?267,130308,161566#msg-161566 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,161566#msg-161566
-to make and all-interface-in-hole board

-to make the board with off-the-shelf copper boards, without cutting - i don't see anything more standard than 10x10 cm boards.

-to keep the board single face and easy to etch and solder (i.e. no smd parts) - unfortunatelly, i had to use some wire jumpers and.... four through hole pads would be bigger than a microsd card, that's why you won't find a through hole mount microsd socket (lol). If you find a good one off-the-shelf, let me know.

In the link, you can have my design files, so play with it and let me know any news.]]> samurai_gui Repetier Thu, 18 Oct 2012 22:46:46 -0400 https://reprap.org/forum/read.php?267,130308,161367#msg-161367 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,161367#msg-161367
I tried to make a pcb in fritzing but I never finished laying it out or testing it. Attached is my attempted fritzing file for anyone who might be interested.]]> another_reprapper Repetier Wed, 17 Oct 2012 18:51:58 -0400 https://reprap.org/forum/read.php?267,130308,161199#msg-161199 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,161199#msg-161199
(i'm the "Guilherme" who asked here before)

i remade ANOTHER_REPRAPER breadboard refered before in this thread and made a pcb for it, putting my lcd display attached in the top of the board, and also put the sdramps circuit in the bottom area of the board. The board is made to connect into the gen7br2 witch design is available at [reprapbr-ge.blogspot.com.br] (in portuguese)

The link of the files (fritzing format) is in

[samuraieffects.com.br]

feel free to mail me at guilherme.henrich@gmail.com regarding this.]]> samurai_gui Repetier Wed, 17 Oct 2012 02:46:23 -0400 https://reprap.org/forum/read.php?267,130308,159452#msg-159452 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,159452#msg-159452
Peter]]> peter6960 Repetier Tue, 09 Oct 2012 04:52:12 -0400 https://reprap.org/forum/read.php?267,130308,157028#msg-157028 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,157028#msg-157028 Guilherme Repetier Wed, 26 Sep 2012 17:48:25 -0400 https://reprap.org/forum/read.php?267,130308,130539#msg-130539 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,130539#msg-130539 I have tested and confirmed that the pullups for SCL & SDA are needed with my Sanguinololu 1.3 board.
Here is an updated breadboard image in case anyone else finds this useful.


]]> another_reprapper Repetier Sat, 28 Apr 2012 18:44:32 -0400 https://reprap.org/forum/read.php?267,130308,130374#msg-130374 Re: Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,130374#msg-130374
I have a similar layout for my gen6. I don't have resistors for the keys. In this case they are not really needed. The PCF8574 have internal pullups and pulling them down to GND doesn't hurt.

Check you board with and without the pullups to scl/sda. Some boards have them already included on their board so they maybe they are also not needed. If you see your display with and without pullups I wouldn't use them.]]> repetier Repetier Fri, 27 Apr 2012 02:53:18 -0400 https://reprap.org/forum/read.php?267,130308,130308#msg-130308 Breadboard layout for LCD & 8 buttons with Repetier firmware https://reprap.org/forum/read.php?267,130308,130308#msg-130308 I have created a breadboard layout for using 8 buttons and a LCD screen with Repetier firmware.

I wondered if someone could validate this layout as being correct? I am planning to create a PCB if this is right so I'd better get this right up front!

I am not sure if I need 8 x 1k resistors for each button - maybe they could share 1 pulldown resistor instead of 8 separate resistors?

Any other feedback is welcome!

TIA


]]> another_reprapper Repetier Thu, 26 Apr 2012 13:10:20 -0400