Google just released their Android Open Accessory Development Kit, based on Arduino, I don't think it would be a bad idea to use it for a new version of RAMPS. I haven't looked through all the details yet, maybe it could even be a drop-in replacement with no changes. It could be called GRAMPS ;) One major advantage is that we could write Android software to allow an android device to control the printer, which would be a big step up from the LCD control panels of the MakerBot. So how about it? Can someone with more knowledge take a look at the electronics specs and see if this is possible? https://reprap.org/forum/read.php?219,83434,83434#msg-83434 Sat, 15 Aug 2026 18:38:41 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,83434,95130#msg-95130 https://reprap.org/forum/read.php?219,83434,95130#msg-95130
[iteadstudio.com]

is there any progress out in the community with this?]]> Buback RAMPS Electronics Tue, 23 Aug 2011 13:34:16 -0400 https://reprap.org/forum/read.php?219,83434,84309#msg-84309 https://reprap.org/forum/read.php?219,83434,84309#msg-84309
That's why it's recommended to use another power for the arduino. But you can use a fuse and calculate how much current this usb host shield need, this will protect the usb host shield as well as your phone.]]> zzarbi RAMPS Electronics Thu, 19 May 2011 14:07:09 -0400 https://reprap.org/forum/read.php?219,83434,84164#msg-84164 https://reprap.org/forum/read.php?219,83434,84164#msg-84164
I recently fried one of my Pololu drivers so I'll be getting a new one, and I'm thinking of picking up a USB host shield in the same shipment. One question I have is how to power it. You say "It's only 4 wires for arduino an few other for vcc/gnd". Could I hook up the USB host shield directly to my power supply instead of getting an Arduino wall wart to power it?

I've read elsewhere strong statements against plugging in power to the arduino in a RAMPS setup. Is there something really wrong with that (i.e. is it gonna fry something?), or do people just say it because it's unnecessary?]]> unicoder RAMPS Electronics Wed, 18 May 2011 10:19:35 -0400 https://reprap.org/forum/read.php?219,83434,83622#msg-83622 https://reprap.org/forum/read.php?219,83434,83622#msg-83622 - (19) SS = Z_MAX_PIN (Which is not really used, and could be move somewhere else)
- (20) SCK = SDA ???
- (21) MOSI = SCL ???
- (22) MISO = Not use at all

If you look at that picture: [reprap.org]
Port 20, 21, 22 seems to not be used either... At least no by the RAMPS shield. Now I'm almost sure that there are used while communicating via USB with the host software.
If so you still can do what you want by rewriting the firmware to take instruction from the USB host shield instead of the USB of the Mega board...

And the full printer will be printing directly from your phone! I can think of 3D objects store as an application, where you could buy objects from the store, plug your printer and print it :)

PS: you won't be able to stack them anyway because I quote (from previous link): "Sparkfun’s shield is cheaper but has some drawbacks. Firstly it does not work with Arduino Mega variants because these boards have their SPI pins in a different location." It does work but you going to have to wire them... It's only 4 wires for arduino an few other for vcc/gnd...]]> zzarbi RAMPS Electronics Fri, 13 May 2011 12:23:14 -0400 https://reprap.org/forum/read.php?219,83434,83621#msg-83621 https://reprap.org/forum/read.php?219,83434,83621#msg-83621 under RAMPS?]]> Dale Dunn RAMPS Electronics Fri, 13 May 2011 12:14:04 -0400 https://reprap.org/forum/read.php?219,83434,83605#msg-83605 https://reprap.org/forum/read.php?219,83434,83605#msg-83605 unicoder RAMPS Electronics Fri, 13 May 2011 09:00:43 -0400 https://reprap.org/forum/read.php?219,83434,83563#msg-83563 https://reprap.org/forum/read.php?219,83434,83563#msg-83563 unicoder RAMPS Electronics Thu, 12 May 2011 23:47:41 -0400 https://reprap.org/forum/read.php?219,83434,83546#msg-83546 https://reprap.org/forum/read.php?219,83434,83546#msg-83546 romfont.com]]]> zzarbi RAMPS Electronics Thu, 12 May 2011 16:06:47 -0400 https://reprap.org/forum/read.php?219,83434,83536#msg-83536 https://reprap.org/forum/read.php?219,83434,83536#msg-83536
I want this.

I have an old G1 I was about to sell, but this would be a much better use for it. I'm sure I can find a ROM for it with the new APIs on xda-developers.com. The board should be a drop-in replacement. The only thing that needs to be done is to write the Android software to run the printer. It could display printer stats, play/pause buttons, and take gcode from the sd card or over bluetooth(and saved to sd) and communicate that to the board(?). I'm not totally familiar with the whole printing process yet, because I haven't printed anything yet, but I could write the Android software. Now I just need one of these google arduinos...]]> unicoder RAMPS Electronics Thu, 12 May 2011 12:39:32 -0400 https://reprap.org/forum/read.php?219,83434,83513#msg-83513 https://reprap.org/forum/read.php?219,83434,83513#msg-83513 unicoder RAMPS Electronics Thu, 12 May 2011 08:15:06 -0400 https://reprap.org/forum/read.php?219,83434,83504#msg-83504 https://reprap.org/forum/read.php?219,83434,83504#msg-83504 brupje RAMPS Electronics Thu, 12 May 2011 06:53:58 -0400 https://reprap.org/forum/read.php?219,83434,83445#msg-83445 https://reprap.org/forum/read.php?219,83434,83445#msg-83445 I was thinking about the same thing except that i need an android phone lol]]> zzarbi RAMPS Electronics Wed, 11 May 2011 15:33:04 -0400 https://reprap.org/forum/read.php?219,83434,83434#msg-83434 https://reprap.org/forum/read.php?219,83434,83434#msg-83434 Android Open Accessory Development Kit, based on Arduino, I don't think it would be a bad idea to use it for a new version of RAMPS. I haven't looked through all the details yet, maybe it could even be a drop-in replacement with no changes. It could be called GRAMPS ;)
One major advantage is that we could write Android software to allow an android device to control the printer, which would be a big step up from the LCD control panels of the MakerBot.
So how about it? Can someone with more knowledge take a look at the electronics specs and see if this is possible?]]> unicoder RAMPS Electronics Wed, 11 May 2011 13:04:15 -0400