Extending Me BaseBoard with more RJ25

#1

Hi

Is it possible to extend a Me BaseBoard to get the possibility to connect more sensor? Like a second shield or two Me BaseBoard together.

Thank you

#2

Yeah, we are considering this thing seriously. There has been some people ask for this.

#3

If you’re up for making your own RJ-25 cables, you have a lot more flexibility. For instance, I connected a 5th motor by using one of the analog outputs (PWM) and the motor power pins.

#4

Mitch212- Can you give more details on adding a fifth motor? How did you make the cables and what is the code you used? Thanks

#5

Here is an image of the cable connections using a servo driver:

IMAG0722.jpg3264x1840 795 KB

Here is an image of the servo driver’s RJ-25 connector. It’s hard to see with this light, but this RJ-25 connector is using the standard color configuration where pin 1 is blue (A5), pin 3 is green (GND), and pin 4 is red (V-M).

Here is an image of the 2 pin header: pin 1 is green (GND) and pin 2 is red (V-M).

Here is an image of the Baseboard’s RJ-25 connector: pin 1 is blue (A5).

The key is to make sure you are using an analog pin that supports PWM. The arduino leonardo (i.e. Baseboard) supports PWM on pin 3 and 5, which means you can use port 7 (A3) and port 8 (A5). As far as software, you simply use a MeServo as normal with the appropriate Baseboard port number and device number 1.

Driving a DC motor is a little different because you a 4th connection to control the motor direction. I haven’t needed to do that yet, but you just need to look at the schematics of the boards to see what connections are required.

#6