Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[togo]

Ah, so you really *are* talking about the Arduino Leonardo, the ARM-based Arduino with the one half of the Canbus already onboard (external transceiver required)?

But no, this http://www.hobbytronics.co.uk/leonardo-canbus doesn't show an arduino leonardo.  Very confusing.

[togo]

OK, so I was confusing the official Arduinos

The official Arduino Leonardo doesn't have CANBUS, and is

https://store.arduino.cc/usa/arduino-leonardo-with-headers

The official Arduino Due is the ARM-based one with two sets of CANBUS RX and TX lines

http://copperhilltech.com/blog/arduino-due-can-bus-controller-area-network-interfaces/

Well, I ordered the hobbytronics one (in spite of trademark abuse concerns), shipping to USA was not prohibitive after all.

[originalspacerob]

Hello togo. The only place I found was hobbytronics site. I ordered it an the shipping was not much to Connecticut. I thing 7-8. I had it shipped priority which was a little more and I got it today with the Elteks. Time to solder the can bus board together and see how things go. Winjnand71 posted great info above to get started with.



Sent from my iPhone using Tapatalk

[Lenny]

@Togo
So far the Hobbytronics board is the only one known with integrated CAN. Otherwise you have to buy those shields (pretty big) or separate CAN chips, which then are connected to Arduino with a serial connection, but those CAN chips sometimes don't have libraries and therefore are not easy to use. Given the price, the Hobbytronics board is a very good solution.

@originalspacerob
Actually, because the flatpacks are not wired in series anymore (like the 48V units used before), you can connect all the Flatpacks to the CAN simultaneously and control their voltages and currents.

[Shadow]

The Teensy 3.5/3.6 have CANbus built-in but you need to add transceiver IC(s).

[togo]

Ditto Arduino Due

[BrianTRice@gmail.com]

We should document this on the wiki under the DIY charging section.

Do these have an IP rating?

[togo]

Looks like this is the data sheet:

http://www.rectifier.co.za/ac-dc%20power%20supplies/eltek/pdf/2000%20HE%20WOR.pdf

I do see:

Marine
Temperature Cl. B
Humidity Cl. B
Vibration Cl. A
EMC Cl. B

Environment
1 Class 1.2
ETSI EN 300 019-2-2 Class 2.3
ETSI EN 300 019-2-3 Class 3.2
ETSI EN 300 132-2
RoHS compliant

I don't see something listed as IPxx

[willbrunner]

I got my backplane PCBs today, and they were good enough to plug in and power up the rectifier.  The holes for  negative output and ground were a bit close to the housing, so I decided to move them out a bit.  I also added a second set of holes for a cable going on to the onboard charger.

I am sharing the PCBs on OSHPark if anyone is interested.  Please understand that these have been minimally tested, and so use them at your own risk.  OSHPark charges $13.65 for 3 copies of the board.  Here is the link:

https://oshpark.com/shared_projects/lsGxQciq

[originalspacerob]

looks good Will.  Nice job and thank you for sharing.  looks like your voltage settings are similar to mine on my Rectifiers.  Mine were outputting 124VDC.  They didn't haev the 60 second delay on startup however.  They turned on in about 3 seconds and started putting out voltage. 

I have been having trouble connecting to my Leonardo board.  I'm using the Arduino IDE software and it can detect the board on the COM port for both my Macbook and my Windows laptop. I tried both since reading some people have had the same issue with a Mac. When I paste the code in and check for errors it has a compiling issue that comes up on the bottom of the sketch program.  I was just uploading the code as it was to make sure the board would take it.  I didn't input my serial number and everything else and actually hook it up to the Rectifier. I was going to so that once I knew the board was communicating and loading.  Any thoughts?  Has anyone else seen this when trying? I did see that there were issues with older sketches so I tried both the one posted in this thread and the one from endless sphere. 

I'm attaching a screen shot of what the error looks like.

[Shadow]

..Any thoughts?  Has anyone else seen this when trying?...

Does it compile a simple "hello world" example sketch?

[originalspacerob]

I will have to try that tonight and report back.


Sent from my iPhone using Tapatalk

[Lenny]

Could you please post screenshots of more detailed error messages? A compiling error can have approx. 1000 reasons. I guess you didn't install all necessary libraries. Check "Sketch - Libraries - Manage Libraries" and install all missing ones like CAN and so on.

[originalspacerob]

I got the board to communicate and compile and upload the sketch.  Sorry about not more screen shots.  I will be sure to include them next time.  Lenny, thank you for mentioning the Libraries.  I saw that under sketches but didn't know what they did.  Once you mentioned the Can library I looked it up and found the libraries on the Hobbytronics site.  Thank you so much.  This was my first time ever doing this so thanks for steering me in the right direction. 

Installing the Can Bus libraries fixed my problem with the compiling.  When I went back to the Hobbytronics site they mentioned below to download and install the can bus library from github.   Now the IDE program can read the CAN code.  Now I will try and add my serial number and such and see if I can actually get it to work and reprogram the rectifier.  We will see how it goes from here. 

This is the file library they say to install with the Leonardo CAN BUS from Hobbytronics
https://github.com/reeedstudio/CAN_BUS_Shield

[willbrunner]

I followed Remmie's instructions, and it worked like a charm.  I did notice that the output voltage is a few tenths of a volt higher than the programmed voltage, so I would recommend measuring and adjusting accordingly.  Still, much better than 1% accurate.

I also printed out a simple cover to hold the cables and minimize chances of contacting live conductors.