Search found 23 matches

by marcuso
Thu Jul 07, 2016 3:00 pm
Forum: General Discussion
Topic: RoboClaw only works with USb plugged in !
Replies: 6
Views: 8086

Re: RoboClaw only works with USb plugged in !

OK got you, so the setting in the drop down list for 3 cell is not saying - 3 cell 9 volt battery, it's saying - 3 cell with a minimum voltage on the battery of 9v (3 volt per cell), then it will stop drawing from the battery when it gets to 3 volt per cell. I thought it meant the battery being used...
by marcuso
Tue Jul 05, 2016 11:25 pm
Forum: General Discussion
Topic: RoboClaw only works with USb plugged in !
Replies: 6
Views: 8086

Re: RoboClaw only works with USb plugged in !

Ok its all working now. I was pressing the LIPO button on the board thinking it was resetting the board, but I think I put it in a weird state, as the LED status' seemed to be flashing 3 times repeatedly ( not the error LED). Anyway now the LEDs are correct, so its working, nothing to do with the US...
by marcuso
Tue Jul 05, 2016 10:00 pm
Forum: General Discussion
Topic: RoboClaw only works with USb plugged in !
Replies: 6
Views: 8086

Re: RoboClaw only works with USb plugged in !

Hi thanks for the reply, so I am using an Arudino, and I'm using version 10 of the RoboClaw lib. #define _RC_VERSION 10 // software version of this library #define _SS_VERSION 16 The constructor takes a serial pointer RoboClaw(SoftwareSerial *sserial,uint32_t tout); So this looks like the latest lib...
by marcuso
Tue Jul 05, 2016 1:03 am
Forum: General Discussion
Topic: RoboClaw only works with USb plugged in !
Replies: 6
Views: 8086

RoboClaw only works with USb plugged in !

Hi, I am driving the RoboClaw via advanced packet serial mode. It doesnt matter how I've programmed it and the way it's setup. As the problem I have is this. Everything works great when I have the roboclaw plugged in to the PC via USB. The motors are driven exactly as they should be, there are no er...
by marcuso
Wed Jun 29, 2016 10:54 pm
Forum: General Discussion
Topic: Calling roboclaw functions from 2 python threads
Replies: 5
Views: 7282

Re: Calling roboclaw functions from 2 python threads

Is the code public ? I could make it thread safe.
by marcuso
Wed Jun 29, 2016 10:43 pm
Forum: General Discussion
Topic: Incorrect Circuit for Regen run-off - diode
Replies: 8
Views: 9218

Re: Incorrect Circuit for Regen run-off - diode

OK thanks for your patience with all this, I've wired up the diode and fuses and e-switch, I will be posting it on my blog, so I'll point people to it to hep them out, when Ive typed it all up.

Marcus,
by marcuso
Wed Jun 29, 2016 10:40 pm
Forum: General Discussion
Topic: Wiring in the diode and switch
Replies: 8
Views: 10307

Re: Wiring in the diode and switch

IN my motor specs it states that the maximum current the motors should draw (aka the max stall current), is 20 amps. If they are drawing more than this, then the motors are not designed for this, and I suspect will be damaged. Quote from my motor manufacturer "Gear train damage can occur if sta...
by marcuso
Tue Jun 28, 2016 1:26 pm
Forum: General Discussion
Topic: Incorrect Circuit for Regen run-off - diode
Replies: 8
Views: 9218

Re: Incorrect Circuit for Regen run-off - diode

OK, but is the 50v + a result of voltage spike on disconnect ? As you said you had built protection in for that already on the board, so voltage spikes are already handled by your design right ? If so it's stil not necessary for a diode ! I've put one on anyway.
by marcuso
Tue Jun 28, 2016 1:24 pm
Forum: General Discussion
Topic: Wiring in the diode and switch
Replies: 8
Views: 10307

Re: Wiring in the diode and switch

Hi, This is for the motor power connection, not for a seperate logic board power supply (I use a single power supply for both, but you can split the two if you wish). My motors have a stall rating of 20 amps. You can put a fuse on the +ve between the battery and any suitable rated switch. The fuse f...
by marcuso
Sun Jun 26, 2016 12:05 am
Forum: General Discussion
Topic: Calling roboclaw functions from 2 python threads
Replies: 5
Views: 7282

Re: Calling roboclaw functions from 2 python threads

Hi, I'm curious as to how you are dealing with multiple threads, as I'm going to be doing something similar soon, not only reads though, but also driving the motors from different threads as well (not sharing the same motor across threads, but each thread having it's own motor for example). I presum...