OP
OP
Also, what is your kernel version? The exact parameters have changed between Jessie and Stretch kernels IIRC.
Reef-Pi Controllers: New all-in-one with power bar, and the original Pico
- Thread starter theatrus
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Also, what is your kernel version? The exact parameters have changed between Jessie and Stretch kernels IIRC.
I'm o stretch, kernel 4.14.
I think I have some better understanding of whats going on with the 0-10V output. Here are two observations:
- The pins are bit different. When I connect my stock kessil connector (both end male 3.5 mm 3 pin audio jacks) , GND is mapped on ring and both channels on tip and sleeve. This is most likely the reason why lights were not working as expected.
- The range is 0-11V instead of 10V. Here are the reef-pi UI to voltage output , measured by multimeter
0% -> 0V
1% -> .11 V
5% ->.55 V
50% -> 5.5V
90% -> 9.9V
100% -> 11 V
I can deal with this with reef-pi's light specific parameters (set max threshold at 90%). For the channel mismatch, I think I'll build an adapter (female to male) to remap the channels as expected (sleeve being GND, and tip/ring each representing one channel)
OP
OP
Yeah, looks like we will overshoot by 10%. Let me work on a different resistor value for the gain. This was likely me economizing part selection to not add another unique value to the mix.
As for the pinout, my ground is also on the ring - signals on tip and sleeve. What did I miss?
For kessil, I need GND on the sleeve.
OP
OP
dmolavi
Well-Known Member
Can the lighting 'module' use non-Kessel lights, or would I need to use the 0-10VDC outputs to control my lights (ReefBrite and BuildMyLED)?
OP
OP
If your lighting dims with 0-10V, its a straight connection. If you lighting wants logic PWM, I'd suggest wiring a PCA9685 to the I2C port - just the breakout board from Adafruit or the like should work.
dmolavi
Well-Known Member
The BML uses straight 0-10V. I'll have to check the ReefBrite and see what it uses as it's dimming input (it's a separate module, not included with the light).
OP
OP
Should be a direct connection then!
(Note that in the current board set, its really a 0-11V output, an extra bonus volt at the 100% setting :-D. This will be fixed.)
dmolavi
Well-Known Member
Works for me....the BML takes 12VDC normally anyway
rushbattle
Valuable Member
For those keeping record, neutral wasn't soldered at all on relay #4.
Can anyone spy Waldo?
OP
OP
Ouch. So many out of box failures.
rushbattle
Valuable Member
I am still seeing the same behavior on the 0-10V outputs.
dtoverlay=pwm-2chan
This is correct yes? Do I need anything else to ensure the PWM pins work?
With regards to the ring, I get pin0 working correctly on the sleeve, which is pin0, apparently. Nothing changes when I move pin1 settings for the tip in reef-pi. Both boards are behaving the same way, I must have something misconfigured. rpi PWM freq is set to 300Hz via reef-pi.
Any ideas folks?
I have double checked config.txt. I am showing:
dtoverlay=pwm-2chan
This is correct yes? Do I need anything else to ensure the PWM pins work?
With regards to the ring, I get pin0 working correctly on the sleeve, which is pin0, apparently. Nothing changes when I move pin1 settings for the tip in reef-pi. Both boards are behaving the same way, I must have something misconfigured. rpi PWM freq is set to 300Hz via reef-pi.
Any ideas folks?
I got my kessil a80 control working today with a custom male/female Audio jack connector . Since the rev c has a different pin arrangement (gnd on ring) than what is expected by kessil (gnd on sleeve ) I had to do this .
It’s works perfect now. Which means for one of my pico tank now the base board (rev c) is controlling all equipment , temperature control and light (kessil a80). I’ll be testing the ph driver soon with the standalone board(roberto’s) and then test it against the base board
Very exciting. And again, good job @theatrus and thank you for sending a sample board for test.
It’s works perfect now. Which means for one of my pico tank now the base board (rev c) is controlling all equipment , temperature control and light (kessil a80). I’ll be testing the ph driver soon with the standalone board(roberto’s) and then test it against the base board
Very exciting. And again, good job @theatrus and thank you for sending a sample board for test.
I just posted about this, the channels are bit differen. Sleeve is one channel, tip is another and ring is gnd.
OP
OP
rushbattle
Valuable Member
This was it, I apologize for missing that bit of configuration and wasting your time. Happy New Year!
OP
OP
Don’t mind at all. Happy New Year!
You have to use the 0-10V two channel output, exposed as audio connector. You'll have some ancillary circuit and a dedicated power supply for the dosing pumps.
The pico board was designed to support a pico reef tank
and the intended use case did not involve doser. It was only equipment, temperature and light. These were my suggestion . @theatrus added the ph circuit, a board specific MCU and bunch of other goodies in there, but still nothing targeted for dosers, per say. But as I was mentioning, it should be possible to use the 0-10V pwm to control a purpose-built doser.
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