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Forum Index : Electronics : Inverter PCB’s
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| ryanm Senior Member  Joined: 25/09/2015 Location: AustraliaPosts: 202 |
You're after the 328. Definitely don't get the other one. |
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Madness Guru  Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Thanks Ryan, yes you want the Nano V3 CH340 ATmega328 Mark. The first one is a Pro Mini not a Nano, the mini is that a mini version with less pins. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Here is a mockup of the control board printed on paper with the 2 microcontrollers.  There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1664 |
Any chance you can attach a hi-res version of some form to a post? Phil. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I can't post hi res images due to file size limitations, which board are chasing Phil I can do a PDF. If it is the Charge regulator your after I am working on that and it ATM, once I have a decent version I will post a PDF, I am hoping that will be later today. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678 |
Looks great Mad, I trust you got my payment through the other day. Hopefully everyone interested gets a wriggle on so you can order them. Cheers Caveman Mark Off grid eastern Melb |
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| ryanm Senior Member Joined: 25/09/2015 Location: AustraliaPosts: 202 |
Is the components list earlier in the thread still current? |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
The list for the Fan Board on page 4 and Power Board on page 10 are correct AFIK. Control board I have not done a full list as yet in addition to the standard Oztules version there are, 2 FQP30N06L MOSFETs 2, 3, 4 & 5 pin 2.54 pitch PCB Connectors. 2 pin 5.08 mm PCB connector (I use screw but could be plug in) 10K trim pot 100K 0.25W resistor 9k1 0.25W resistor 4k7 0.5W resistor 4 1k 0.5W resistors 6 1N4007 Diodes 1 5.08 Pitch 2 pin PCB screw connector 1 12V power supply as used for fans Arduino Nano V3 CH340 ATmega328 1 20 X 4 Serial LCD Piezo Beeper At least 2 DS18B20 Temerature Sensors Plus a few extra capacitors that are the same as the original PCB, There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Boppa Guru Joined: 08/11/2016 Location: AustraliaPosts: 814 |
I been using postimg, max size is 1600x1200 there and takes all image types. You dont even need to signup, altho I have, just so I could keep track of my images Best thing is they allow hotlinking, or you can just post a link to the image instead and you can easily resize to most standard sizes |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
To post a link you then have to host it somewhere, I can't be bothered doing that. Been working on the GTI regulator, I will get a small sample of these made, not ready to do any more until I have actually tested it. If there are any Masochists out there that want to try the Beta version let me know, no guarantees though, it is experimental.  There are only 10 types of people in the world: those who understand binary, and those who don't. |
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Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904 |
Gary, looking at your latest control board version on the previous page I'm wondering why you have not thought to lay out the transformer, mains cap & 4 rectifier diodes section so that that end could easily be trimmed/ snapped off from the control board. A pair of 2 pin headers is all that's required to connect the 12VDC to the control board, wherever it is located. Mechanically that makes a lot more sense to me and electrically it has the big benefit to be able to locate that mains capacitor(s) very close to the toroid secondary, where it belongs. This is what I have and never had any regret doing it that way. And, out of curiosity, what is that grid of PCB holes next to your nano socket used for? Klaus |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Klaus I am sorry you don't like that way, but then maybe I am not. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904 |
That has nothing to do with "liking" at all. You may remember that long discussion we had here, back when your and my inverter played up regularly, about the function of that mains capacitor. Our resident engineer, warpspeed, recommended that it would be most beneficial if resonance at 75Hz between the toroid secondary and that capacitor could be established. That resonance is very unlikely with long power leads to that capacitor.... Klaus |
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| Mulver Senior Member Joined: 27/02/2017 Location: AustraliaPosts: 160 |
Hey Mad, I’ve sent you a PM regarding boards. For the GTI regulation of multiple strings does the FET for each string need to be isolated from one another? What I’m considering is running all my solar strings to one “regulator” box then off to the respective GTI. Most likely a ex 3kw Areosharp box, I’d like to mount the FETs to the nice heat sink. Cheers Shane. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
Hi Shane, Oztules has had no problem with the Aerosharps having all the negative sides of the panels in common at the MOSFETs. However I pulled a lot of hair out trying to stop mine from shorting FETs, the solution turned out to be keeping the Drains of each channel to the GTI isolated. The source legs are in common and that is fine but for some white mans magic reason it does not work with my Zeversolar GTI having the Drains connected. Since I fixed that it has run perfectly for the last 4-5 months. The new version of the regulator is basically my first version with that modification and a lot of other bits added including a 16 bit ADC to get high-resolution voltage readings for the battery voltage and also for a battery current sensor. Have a look at Oztules thread on the GTI regulators, I think he had the drains connected to ground and did not have an isolated power supply. With the HF modern GTIs you must have the DC from the PV completely isolated otherwise you will be ordering a bottle of electronic smoke to put back in. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I almost have enough orders to send off to get the PCBs made, if there is anyone else wanting to go ahead please let me know very soon as I plan to send the order on Wednesday this week. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| ryanm Senior Member Joined: 25/09/2015 Location: AustraliaPosts: 202 |
I'm a bit lost without a schematic Madness, are you using the SPI pins? I recon a little radio module would go down well as you could house the PV array in a seperate building and still have an accurate battery voltage reading. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I am planning to use RS485 for communications and have the spot for the module on the PCB. RS 485 works up to 1200M via a twisted pair and is considered to be very reliable. My plan to have the same PCB with different code loaded to act as slave units. The master located near your batteries would send instructions to the slave units connected to other GTIs connected to your AC power to control their output as required. For myself I will be setting up most of my solar equipment in a shed and later building a house about 200M away. I will then put more panels and a GTI on the house with a regulator as described above. This system could also send commands to turn on a HWS and other loads like water pumps as excess power is available. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
I am using a Ferrite ring for the choke now and have not found any problem with having the transformer and capacitors on the control board. There are only 10 types of people in the world: those who understand binary, and those who don't. |
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| tinyt Guru Joined: 12/11/2017 Location: United StatesPosts: 438 |
From an ignorant newbie far away - what is an HWS? |
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