XT60 connector query and how to connect two nervo board's power supply together?

[Roger]

Hello Gael, Hello Wilco and All helpers, 

I searched around the forum and couldn't find answers (sorry, I may have missed it..) close to my question on my on-going soldering of the nervo boards

which I have not finished yet and plan to do more on it this week, 

I have attached an image of my current progress on the Nervo board (close to), my question is:

1. Do I need to solder the XT60 connectors on all the remaining holes (I red circled them) on the Nervo board? and are these holes "output" voltages? or just providing different voltages 

on the board itself..?...

2. and this question I'm not able to find answer for in the forum or I may have missed...., in my attached second image and third images is Gael's images in the http://inmoov.fr/nervo-board-tutorial/  , of connecting the" two Nervo board power supply together, this is handy when using only one battery or one power supply. " and are the two red wires the ones that connects the two Nervoboard's power supply together (in the attached second image I highlighted)?   ......I can just not see where I can connect the Nervo board I bought (attached) to the second nervo board?...., please advise.., sorry if is a stupid question.., struggling to figure on how they are connected... ..., 

Thank you for your help as always!

Kind Regards, 

Roger

[wilco van toorn]

Roger, 

1. You only need to solder the other xt60 if you want to use different servos that run on different power. Say the 7.4V servos need more power than the 6.0V. With the other connectors you could use different power at the same time. If you are only using 6V servos, you only have to solder the 6V connector. But make sure you solder the small tabs posted in the tutorial to make the connections. Ill ask Marten to explain better, he is the designer of the board and he knows the ins and outs of the boards.

2. The 2 boards are run in parallel. so 1 connection from the battery is split into 2 connections so both nervo boards can be run of a single battery. Think of it like a Y connector. the single bottom end goes to the battery and the 2 top ends go to the nervoboards.

Op dinsdag 4 september 2018 02:32:05 UTC+2 schreef Roger:

[Roger]

Hello Wilco,

I'm thinking of the concept as the Y connector which you advised, I got one red wire connected to the positive end of the battery and one black wire connected to the negative(ground) of the battery,

Question is do I split the red wire into two and also the black wire into two and then connect them as separate pairs to the two nervo boards?

Or do I use a terminal bus bar? ....

I get more of the XT60 connectors idea, hoping I won't do it wrong..

Thank you for your kind help as always!

Kind Regards
Roger

[wilco van toorn]

Did you get a servo moving in mrl? btw?

Ill ask marten or someone to post a picture about the Y harnass

Op dinsdag 4 september 2018 15:02:24 UTC+2 schreef Roger:

[Roger]

Hello Wilco,

Yes, I got a servo moving in MRL via connections to the Arduino
Mega, so now I want to test the servos through the two actual Nervo boards via ribbon cables and I'm stuck..

And yes thank you for your help, pictures would be great on the connections on the Y harness and from the battery to the two nervo boards... I look forward to it!

Thank you as always!

Kind Regards
Roger

[Roger]

Hello Wilco, All,

Any updates on my query? I'm still waiting as well,

Thank you for your help,

Kind Regards
Roger

[wilco van toorn]

No updates, but it is pretty simple, the battery has 2 poles, min and plus. you could use a big connector on the battery and hook up both cables to the nervoboards, so the 2 plus cables (red) go to the red terminal and the 2 negative (black) go to the black terminal on the battery. I know there are going to be pcb's made that will eliminate such an y harnass but when they will be ready and available, depends on how much time they have.

For now i would suggest like i wrote here, and that will work for a fixed robot.

If you still need me to look at your mrl, let me know. i am available now.

Op donderdag 6 september 2018 15:32:49 UTC+2 schreef Roger:

[Roger]

Hello Wilco,

Ok, I will try that from your detailed suggestions, steps and thank you for your help, much appreciated!

Kind Regards,
Roger

[wilco van toorn]

Tonight (friday) i can remote connect to you and help you with mrl. I think you have the wrong version of the arduino code in your arduino. But we will check and change that. I know your myrobotlab works, i tested that so its a small thing to fix.

Op donderdag 6 september 2018 23:05:55 UTC+2 schreef Roger: