DTR pin from 16u2 to reset ATmega2560 on serial connect doesn't match pinout in official Arduino Mega 2560 16u2 firmware. DTR pin is PB0 (pin 14) instead of PD7 (pin 13).

This means that the board won't automatically reset upon serial connection, making firmware upload or connection through a host program difficult.

Potential Solutions:

1. Modify 16u2 firmware to match different pinout. This seems to be what RRD have done with their RUMBA 16u2 firmware, but this means different firmware from the Arduino Mega which is potentially confusing + requires ongoing maintenance.
2. Change pinout to match Arduino Mega2560. Pins 13 and 14 are adjacent, and can be bridged to achieve same outcome on initial batch of boards.

I just installe dthe new board, and noticed the picture on the display connectors have an issue: the mark that shows the tab on the connector is on the wrong side. Took a few minutes to realize that was the issue. Thanks

First of all, I love how you replaced the PTC fuses with blade ones. I was just about to do something like that myself. Thanks so much.

My question is about the access to RX0 and TX0 pins, the ones that are labeled as AUX1 on RAMPS 1.4. I noticed you wired the pins RXD0 and TXD0 to USB. Are those the same pins I should use?
I want to do something like this
Where it says "MKS TFT". That's the connector I want to add. I just dont know which ports RX and TX should I use in your project. Can you help me?

Also, sorry for the bad english and thanks again for the project.

It will be nice if pcb could use this kind of terminal

Better amp handling. No more problem with wire (cage clamp is safe) and fuse

http://www.wagoproducts.com/printed-circuit/series-742/wago-742-111/

BOM for v1.4 has a few components with incorrect part numbers. These have been corrected during assembly but need to be folded back into the BOM (and Altium schematic too probably).

Incorrect parts are:

• C10
• R19
• R5
• R56

Can a JYU-MCU module be attached similar to http://reprap.org/wiki/RAMPS_1.4#BT_Extension?

Programming the 16u2 is tricky because the 5V header physically interferes with connecting to the ICSP header.

Increasing spacing between ISP2 and 5V headers slightly should fix problem.

Happy to see someone updating this board. I am on my 3rd rumba and have to change them because of the USB connectivity issues. Is this being addressed on this board?

Hi,
I'm going to make some of this boards, but I actually disagree with this choice for the Bed and PSU connectors. Instead i found very reliable the Duet's ones, with this model number: TJ952-00.
Do you think that could be possible to modify the board in order to use these?
Thanks you for doing the hard work here providing us a very good board!

I am worried that my bed, which is 300x300 12v, can be drawing to much amperage from the bed mosfet, I am currently measuring about 21 amps, should I get an external mosfet instead?

Been trying to connect the Wifi Backpack from Panucatt to the board. I can connect but seems like I cannot make it communicate with he rumba+.

The documentation says pin 11 and 12 should be tx rx. However, read here in other question that is pin 13 and 14. Not sure which one should use.

Also, not sure what changes is marlin are needed to make this work.

Appreciate your help. Thanks