I would like to controll my printer across the room wirelessly. I’m thinking of hc-05 bluetooth links, cause they are cheap, easy to set up, relyable and have a uart interface.
I saw some mods of this kind for other printers but i couldn’t find anything about this for the vertex printer.
The point is, can someone tell me if there are spare serial RX/TX pins on the vertex motherboard? I spotted SPI but no UART.
What do you think of this idea?
the RX/TX pins that the Vertex uses are connected to the FTDI chip.
If you could change the RX/TX pins in the firmware you can use other pins that are available on the Vertex PCB.
The Atmega 2560 has multiple UART interfaces but I don’t know if those pins are in use. If that’s the case you can try with the SoftwareSerial library (not sure it’s fast enough).
I just comapred the pinout of the atmega chip to the mainboard’s schematics. Unfortunately serial 1 is wired directly to the ftdi and the other serial pins are not wired anywhere. I might try a software serial library, but i dont have any expirience since i never used softwareSerial before.
Does anyone have some expirience with software serial? Does it withstand the high baudrate without slowing down the printer?
Ps: i just found this: reprap.org/wiki/Jy-mcu
Is it a good idea to decrease marlin’s standard baudrate to make software serial working?
You need some experience with C++ and Arduino in order to accomplish this.
I wouldn’t do it and just use a Raspberry Pi with Octopi. Works standalone and has webcam support.
The problem i have with octoprint is the price point. It’s ~ 100€ (in my country, without picam) vs 10€ bluetooth links. It also requires hours of learnig/setting up/enclosure printing.
I found this here: sparkfun.com/products/9981
It’s a serial to SPI converter. It could bridge the mainboard to the BT serial link. But i have no idea if there is any latency or what so ever.
What do you think of this idea?