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SignKSens on D1 Mini with ADS1115 for power monitoring
#1
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Need help here. I have an D1 Mini which I previously have run I2C connection to a MPU 9250 on and it have worked flawless. Now I want to change it and use it with a ADS 1115 to monitor my batteries instead, but I can not get it to work. I have changed  //#define ENABLE_MPU for #define ENABLE_ADS1115 in config.h, and I2C is of course enabled. When I look at the serial monitor i see "Scanning for i2c Sensors..." but when I look for it through my browser in <IP adress>/getSensorinfo, I get nothing. When I try to set <IP adress>/setSensorAttr?address=0x48&attrName=diff0_1&path=vessels.electrical.batteries.voltage  I get the error message: { "success": false }

I plan to hook up a Hall sensor (https://www.ebay.co.uk/itm/ACS758LCB-050...3091956413) and a 0-25V sensor (https://www.ebay.co.uk/itm/222848285280) to monitor my current (pun intended...) battery status by sending data over signalK - possibly by tweaking it in NodeRed - but first I have to get this damned thing to work! ;-)


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#2
I can't help on SigKSens, but how much current are you expecting? That Hall Sensor seems a little small for a yacht battery system. I would think you want something like 100 amps, depending on your alternator and your engine starting current.
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#3
(01-27-2020, 03:54 PM)abarrow Wrote: I can't help on SigKSens, but how much current are you expecting? That Hall Sensor seems a little small for a yacht battery system. I would think you want something like 100 amps, depending on your alternator and your engine starting current.

Depends on your setup right? I have a 30 foot racer without windlass, water heater, electrical  water pumps etc, so it is basically lights, autopilot, and instruments. I believe a 50 amp is sufficient.
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#4
Engine cranking, bow thruster and alternator going full blast into an empty battery are usually the top currents, not various equipment onboard.


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#5
(01-28-2020, 07:05 AM)tkurki Wrote: Engine cranking, bow thruster and alternator going full blast into an empty battery are usually the top currents, not various equipment onboard.


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I want to use the current sensor to see how much power I draw from my house batteries, and two voltage sensors for house- and start batteries. Tkurki - do you have an idea why I can't see the ADS on my SignKSens based D1 Mini?
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#6
If you have a battery monitor then the INA219 current sensor can be quite accurate piggy backed on top of the BMS shunt to monitor current in/out of the battery bank. . Also, JLCPCB.com do quite a few sensors now as surface mount components, get them to solder a complete board up with sensors attached probably cheaper than buying the individual senors off ebay.
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#7
(01-28-2020, 08:49 AM)PaddyB Wrote: If you have a battery monitor then the INA219 current sensor can be quite accurate piggy backed on top of the BMS shunt to monitor current in/out of the battery bank. . Also, JLCPCB.com  do quite a few sensors now as surface mount components, get them to solder a complete board up with sensors attached probably cheaper than buying the individual senors off ebay.

Yup - I've also read up on the INA219. The sweet thing with the setup I am planning is the fact that (If I get it to work) can avoid the shunt altogether. That suits my limited space well. So I am r e a l l y eager to get the ADS to talk to my D1 Mini and send data SignalKSens! :-D
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#8
(01-28-2020, 07:21 AM)Ranur Wrote: [quote='tkurki' pid='12105' dateline='1580209555']
Tkurki - do you have an idea why I can't see the ADS on my SignKSens based D1 Mini?

Bad wiring, a dead ads, dead pins on the D1?





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#9
Hello Ranur, just found your Thread. Are you shure the ADS1115 is set to ADDR 0x48 ?
It should be recognized in the Serial Debug Stream just after first booting. If not, it has an ADDR Line, set this to GND.
Look here for the Addresses: https://www.ti.com/lit/an/sbaa408/sbaa408.pdf

This PIN has also funny Addressmodes where you can set it to use one of 4 Adresses with only 1 BIT !
But the SigKSens software wants it to be on 0x48.

Good Luckj
Holger
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#10
Hi Holger,
Had missed your answer! :-o I have had some other boating stuff to tend to so I had missed/moved on from this. My OP is currently down, but once I get it up and running again, I will look into the adress issue. Also as tkuri mentioned, I'll look over the wiring on my prototype board to see if I can get it working. The other D1 I set up with 1w and an analog voltmeter on the analog input works like a charm.

//Ranur
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