Author Topic: Raspberry Pi and Whizbang Jr  (Read 2481 times)

Johnnyfry

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Raspberry Pi and Whizbang Jr
« on: October 25, 2015, 09:38:49 AM »
Hello, I am new here and I am interested in interfacing a Whizbang Jr to a R-∏. My application is to use as a monitor for an RV DC electrical system so I do not need a charge controller, I am only interested in measuring and display.

Has anyone done this?

Thanks for your attention,
John

zoneblue

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Re: Raspberry Pi and Whizbang Jr
« Reply #1 on: October 25, 2015, 04:29:46 PM »
Andrew did explain how the WBJR works a few weeks ago here on the forum. Ill try to find it.
6x300W CSUN, ground mount, CL150Lite, 2V/400AhToyo AGM,  Outback VFX3024E, Steca Solarix PL1100
http://www.zoneblue.org/cms/page.php?view=off-grid-solar

zoneblue

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Re: Raspberry Pi and Whizbang Jr
« Reply #2 on: October 25, 2015, 04:31:36 PM »
6x300W CSUN, ground mount, CL150Lite, 2V/400AhToyo AGM,  Outback VFX3024E, Steca Solarix PL1100
http://www.zoneblue.org/cms/page.php?view=off-grid-solar

dgd

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Re: Raspberry Pi and Whizbang Jr
« Reply #3 on: December 27, 2015, 04:57:41 PM »
...and its quite straightforward to use an RPi or Arduino to interface with the WBjr.
The odd serial baud rate of 2500 can be fiddled and the timing loops using millis to organise the various states is just what the Arduino is made for (and RPi)
I had to dig through some old postings to figure out using other shunts apart from the Deltec 50mv/500A as I had several Deltec 50mv/100A shunts from old Cisco 7500 48V DC power units.
Another project in the queue to make a multi shunt DC power monitor  8)

dgd
Classic 250, 150,  20 140w, 6 250w PVs, 2Kw turbine, MN ac Clipper, Epanel/MNdc, Trace SW3024E (1997), Century 1050Ah 24V FLA (1999). Arduino power monitoring and web server.  Off grid since 4/2000
West Auckland, New Zealand

Watt_

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Re: Raspberry Pi and Whizbang Jr
« Reply #4 on: January 14, 2019, 06:23:08 AM »

boB

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Re: Raspberry Pi and Whizbang Jr
« Reply #5 on: January 14, 2019, 02:08:42 PM »
Actually it was Brad. here:
http://kb1uas.com/mnsforum/index.php?topic=2583.msg24706#msg24706

404 error.

Is this still available

The main URL changed so I copied and pasted the URL after the kb1uas.com/mnsforum/ part to get this one which actually works !

http://midniteftp.com/forum/index.php?topic=2583.msg24706#msg24706
K7IQ

Watt_

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Re: Raspberry Pi and Whizbang Jr
« Reply #6 on: January 14, 2019, 04:06:47 PM »
Actually it was Brad. here:
http://kb1uas.com/mnsforum/index.php?topic=2583.msg24706#msg24706

404 error.

Is this still available

The main URL changed so I copied and pasted the URL after the kb1uas.com/mnsforum/ part to get this one which actually works !

http://midniteftp.com/forum/index.php?topic=2583.msg24706#msg24706

Thank you boB!

openplanet

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Re: Raspberry Pi and Whizbang Jr
« Reply #7 on: April 14, 2019, 11:44:08 PM »
Possibly (probably!) a stupid question, but...wouldn't it be simpler to just monitor the mV drop across the shunt with the Arduino or RasPi (and code the conversion to Amps)?

boB

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Re: Raspberry Pi and Whizbang Jr
« Reply #8 on: April 15, 2019, 01:00:52 PM »
Possibly (probably!) a stupid question, but...wouldn't it be simpler to just monitor the mV drop across the shunt with the Arduino or RasPi (and code the conversion to Amps)?

Sure, you could do that too. 

Does the Arduino have a high resolution D.C.  A/D converter   that will do positive and negative voltages ?

Or maybe a hat (whatever it's called for the Arduino)  that has one ?  I would be interested if the Arduino or Pi could do that.




K7IQ

Westbranch

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Re: Raspberry Pi and Whizbang Jr
« Reply #9 on: April 15, 2019, 01:48:25 PM »
boB, I think it is a CAPE  or ...?? not a hat...
KID FW1811 560W >C&D 24V 900Ah AGM
CL150 29032 FW V.2126-NW2097-GP2133 175A E-Panel WBjr, 3Px4s 140W > 24V 900Ah AGM,
2 Cisco WRT54GL i/c DD-WRT Rtr, NetGr DS104Hub
Cotek ST1500 Inv  want a 24V  ROSIE Inverter
OmniCharge3024  Eu1/2/3000iGens
West Chilcotin 1680+W to come

boB

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Re: Raspberry Pi and Whizbang Jr
« Reply #10 on: April 15, 2019, 05:45:30 PM »

For Arduinos, I guess they are called Shields.

https://randomnerdtutorials.com/25-arduino-shields/

I think that Capes are for Beagle Bone boards.  I actually have one of those boards.

Maybe it's a Hat that is for Pi ?

boB
K7IQ