RAMPS 1.4 3D Printer: Bluetooth Setup 1, Voltage Divider and Wiring

The RAMPS 1.4 3D printer controller is capable of using a Bluetooth module to connect to the host. However, the most common Bluetooth adapters use 3.3v logic. Since the RAMPS uses 5v logic, a voltage divider is required to protect the Bluetooth adapter from damage. Luckily this only costs around $1 and takes a few minutes to make.
This short video shows construction and wiring of the voltage divider used to safely connect the RAMPS 1.4 3D printer module to an HC-05/HC-06 bluetooth module in order to enable wireless connectivity. The voltage divider goes between the TX of the RAMPS board and the RX of the HC-05 bluetooth module. Schematics and details of this set-up can be found in the Bluetooth section of the Reprap wiki here- reprap.org/wiki...
Parts Needed-
1- HC-05 (or HC-06) bluetooth module
4- 10" female-female breadboard jumper wires (AKA DuPont cables)
2- 1" pieces of 1/8" heat shrink.
1- 1" piece of 1/4" heat shrink
1- 1k Ohm 1/8 watt resistor
1- 680 Ohm 1/8 watt resistor
solder and soldering iron
Note - This video covers the physical wiring & connection only. In the next video (here - • RAMPS 1.4 3D Printer: ... ) I go through how to configure the Bluetooth controller and the RAMPS so that the baud match and test connectivity from the host PC.

[@MarvinStuart]

Can't wait for the next video , thanks for doing this

[@charleswerbick2154]

Thanks for watching! I'm in the process of building a Kossel Mini and am planning to put the whole build up...

[@MarvinStuart]

Charles Werbick i was impressed , just order a NEW FT232 adapter as i thought i had two but can't find them Already have the jy-mcu

[@charleswerbick2154]

***** Yeah I use them to enable telemetry via Bluetooth on my RC multi-copters. Total serendipity that they work on the Reprap too!

[@MarvinStuart]

same here lol how funny i use them to program my GPS module and telemetry on my quads

[@suteal]

Thankyou very much Charles so very helpful but could you please tell me what sketch is that ,that you use in part 2.
Thank you Alan.

[@dmitryradchenko7458]

I wanted to do this coordination with the frequency Converter OMRON did not work

[@500arend]

Euhm, arduino does provide the 3,3 volt?...

[@gijsqwerasdf]

But not on the logic ports

[@itsmesyedofficial]

Hey Charles!
Really informative video mate i am having trouble with following error:
#error "BLUETOOTH is only supported with AT90USB."
Using Ramps 1.4 with Arduino Mega 2560 when compiling after un commenting this line:
// Enable the Bluetooth serial interface on AT90USB devices
#define BLUETOOTH
it gives above error please help!

[@spacrio5794]

You have to programme the bluetooth first