Control panel switches connections?

Hello everyone I need to build a control panel with different switches so that I can control different devices or even all devices at once.  So I have already drawn a plan on what I need to do but it is just that I do not know how to wire the switches so that they can do what they are supposed to be? I need to know how to connect  everything together to have the right circuit First when power gets into the system there is a main switch that will allow power into the whole system. Second there is another switch that has full control over all the devices connected meaning when this switch is used all the devices connected will power on or off regardless of whether the other switches are on or off. Then there is the panel where there are individual switches located and each individual switches controls one type of device such as light or pump. Timer can also be used to be attached to some switch that can be used to allow some devices to power on and off about a specific time. Intermatic sensor can as well be used to power specific devices at night. Thanks for the help.

Question by Chamburn   |  last reply


software to build/layout control panels

I was wondering is there any free software,that helps layout to build my own control panel. i want to layout instruments on panel etc.

Topic by lobito   |  last reply


solar panels questions

In the quest to turn my garage 'green' I started with a purchase of a Sunforce 60 watt solar panel charging kit. I already own a 12v 15amp charge controller that I bought from Green Energies. The Green Energies controller is bigger than the kit supplied so I'm currently using this one. My questions; The Green Energies charge controller is supposed to have a blocking diode in it. When I put my volt meter on the leads going back to the panels (panels dis-connected, controller still hooked to battery) I'm getting approximately 10 volts. Should there be any reading at all? I went out this rainy morning to see if there was any power coming from my panels. To my surprise I read 8-10 volts (depending on cloud cover). This leads to my next question. It is worth adding a boost converter? I suspect the amperage would only be that of the incoming voltage, not what it is boosted up to.. Close? If my guess is correct, my 5amp (system at full power, rated at 24vdc), would only be about 1.6- 2 amps @ 8- 10 vdc. I also suspect the controller is stealing some amperage. 0.5 amps??? That should leave me with at least 1 amp coming in and giving me a 10 amp day. Not bad for a rainy day. Right, wrong or hopefully close? I'm not seeing my battery come up to full charge. I'm using a marine deep cell acid battery from my boat. Every 5 years I replace it to insure the boat will start as needed. Paddling that craft back to shore is not an option. One reason could be the fact of the battery being 5 years old and it will never get back to full. Second I believe would be the draw going back to the panels at night. Will the panels draw power?

Topic by olddawg   |  last reply


DIY clock panel

HI, I work for a church and we have a major problem of losing track of time, we've been looking at buying a large digital timer, but there expensive. Does anyone know how to build a panel that is pretty large (1'x3') that can be controlled, or start/stop/reset?

Topic by drew240   |  last reply


Charge controller CM3024z

Hi,  im a student, i just  wanna ask if i can use the charge controller CM3024Z to a Magneto (alternator) and coupled with a solar panel 50watts? does the solar charge controller are for solar panel only? thanks godbless

Topic by romeob   |  last reply


There is an problem in my account/control panel.

Normally I can see my statistics in my control panel. There were some different sections in contrast to image showed. Last days, sometimes I couldn't reach my control panel, today there is nothing to see my statistics . What is the problem, I couldn't get it.

Topic by JeoleX   |  last reply


16x16 LED panel direct control

Hi all, I got 10 LED panels of 16x16 LEDs each. Now I want to create a big modular display system with these and I'm also planning to post this on the instrucatbles website once I succeed. But I have some problems getting started. I spent alot of time reading all LED matrix related topics on the website here but none of the designs matches the fixed design I have on those panels. Instead of using some sort of multiplexing, 32 shift registers are used for 256 LEDs which means every LED has it's own shift register output. Put then again, I also find 3 buffer ICs on the panels and I have no idea where they are used for... Below the info I have now: 1 PANEL: - 16x16 yellow LEDs - 32x M74HC4094B1 8-bit shift registers - 3x 74HC125N Quad buffer/line register, 3 state Pictures: http://www.myalbum.com/Album=64MKOUJR First I want to work with only 1 panel and be able to control this by putting images on it. But for this I have to understand completely how the hardware is built up so I first want to create the schematic of 1 panel. Can somebody help me with this and get me started on the project? First goal: just control 1 panel with an AVR to put some text on it and let is scroll. Final goal: be able to connect multiple panels and configure the software accordingly to the panels used. Then use a PC to put images on the screen and maybe even create a live feed (webcam capture). For this maybe an FPGA should be used to have more processing power/memory. Many thanks already in advance!

Topic by kris_ge   |  last reply


LCD panel identification?

Hi i got this old LCD panel  see pics it is about 5.7 inches has tow wires cable and another 14 wires cable coming out of it has this writing on the back: FHS-0635 MEDMMPUU3W2F MADE IN JAPAN i need data-sheet or pinouts or anything like this?"i used Google and kinda failed" and how to connect it and control it ?"or this type of LCD s " and what is its applications ? any info or links ... thank u in advance :)

Question by lu2a   |  last reply


How can I sequence several small motors. Answered

Wife approved Home Theater ​I plan to build raised panel cabinets that also hide home theater speakers and 60" screen. Open display/bookshelves sit between the speaker garage and the 60" screen. The raised panel (I'll make with my 5hp shaper) covering the speaker will roll over the display cabinet allowing the speakers to move out into the room on motorized platforms. Then, the speakers will rotate on a motorized turntable  to the desired position. Next, the two panels covering the screen will move under the speaker panels and also cover the display cabinet plus a little of the garage space. I want this to all be initiated with the push of a button. The motors will all be sequential in the above order. First, the speaker panel can roll until it hits a button, next, the speaker platform movement could be controlled by motor revolutions as in a stepmotor and would stop the platform at the right spot. When this action is complete, the speaker rotation could also use a step motor count. Next, the two screen panels will roll under the speaker panels until they hit a final stop button. I will need a central controller to manage the sequence order. I am familiar with Fishertechnik robotics controllers but I'm hoping that someone here can give me some suggestions to make this work. Thanks for reading. Chuck

Question by oneartist   |  last reply


charge controller

I have the cm3024z charge controller. i have 240 watts going in, controller going to batteries, no conection on the load,   have 1500 watt converter hooked to batteries. set the controller as such,,, HvD-14v, LvR-12.5 v'  LvD-10.8 v . my voltage comming in to the controller is good, when i get to the hvd it kicks out at 14v as it should, but my lvr doesnt want to kick back in. i have let the batteties drain below the lvr but will not kick back in ..  is there anybody that can help with this, i have retured the first one and this is my second one with same problem. i have left the system hooked up as acording to manual,but after it kicks out it just wont kick bavk in unless i disconnect the panels and reconnect them.   all help would be appreciate, thanks

Topic by puddlepod   |  last reply


The correct Diode Specifications for Solar Panels in parallel.

Hello Guys I have a question, If you connected 4 of 250Watts 24volts solar panel in parallel before connecting them to your charge controller, what would be the recommended blocking diode rating on each of these panels?

Question by EugeneT18   |  last reply


What can I do with a scavenged 9" TFT panel?

Over the last several years I have been through three different pairs of portable DVD players.  Since they don't work anymore, I yanked the displays from them.   What can I build with these bad boys?  Is there any way to use them without the controllers from the players?  If not, where can I get a controller?

Topic by bodie   |  last reply


I want to buy a 40W solarpanel how can I calculate how "heavy " the controller and the inverter should be?

The man in the shop told me it would be wise to buy these things too. If I want to use it continiously he advised a battery. How heavy should this be and how can I calculate it for a panel of 80 Watt Thanks in advance

Question by    |  last reply


Solar panel short reads 28v? yet charge controller reads 14v? Batteries?

I have a solar panel that I picked up on internet for free due to damaged glass(no biggie).  Placing a voltmeter across the output leads has 28.6volts.  I connected this to a PWM charge controller recycled from a junk yard.  I set the CC parameters to 24v and hooked up two 12v car batteries(13.2v good) in series to make my 24v circuit.  Now the CC digital panel reads 14v.  Checked all the connections and retested the panel, two batteries and CC. It checks out ok. But why does the CC readout at 14v in full sunlight? yet the panel reads 28.6v? The only thing is the two batteries are different in AH ratings. One is 96 Ah and the other 115Ah.

Question by JuG2   |  last reply


Solar??? Batteries??? controller???

I want to get these 12v solar battery chargers they come with alligator clamps to hook to the battery. i want to get enough for around 150 volts so how would i hook the solar panels in series, and do i need a controller for each battery? and how would i rig that up and how can I get it going into all the 12 volt batteries without any damage to the batteries etc. And can this be done for less than $400 if the solar panels are $30 each and the batteries are $14 each. THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!! oh and could you give me links for all the stuff I'm gonna be buying. THANKS!!!!  

Question by jimmerforpoy   |  last reply


Heating Control

I have been thinking for some years now that I would like to have finer control over my central heating. The problem Now we are older we feel the cold more so in winter the heating is on all the time. This means that we have to keep altering the thermostat on each radiator at different times of the day or just leave them and so waste energy. One method means wasting energy but the other means rooms will be colder than we want initially.   The system and what i have We have a combination boiler which has a digital timer and also on the panel are temperature controls for hot water and radiator temperature. Each radiator has a thermostatic valve so each room can have it's temperature set independently. I have a computer which runs 24/7 and also a bit whacker which I can control via python code and electronics has been a hobby for over 50 years My idea I would like to have some system which would allow me to adjust each room temperature via computer control.   Possible solutions Solution 1 Fit a stepper motor to each thermostatic valve to adjust it at different times of the day/night. This would allow precise control but would be quite expensive to set up. Solution 2 Fit a small structure round each valve with a filament bulb or resistance wire in the bottom so that when power is applied to it then the temperature around the valve will rise and so the valve will close or, at least partially close. I think this would be much cheaper to implement but would have the small on-going cost of using power to the bulbs whenever the room temperature needs to be cooler that it would normally be. My initial plan Build a small structure around one of the valves with a low voltage bulb in it. It would have vents at top and bottom and so air would circulate. I have a portable digital thermometer so i could gather information and try different bulbs to see how much power would be needed and therefore what the on-going cost would be. Also try various shapes of structure to see what the effect would be.   So guys what do you think?

Topic by buteman   |  last reply


Solar panel uses??

Hey guys I'm needing the expert opinions of everyone here in the tech section. See I just mounted this 0.5 watt solar panel outside on a L bracket today (not just a couple tiny ones I pulled out of solar lanterns (does anyone want to see what it looks like mounted outside? I didn't think to take pictures until I got inside). Anyways, I've mounted it, ran the wire along the ground and in through my window (drilled a small hole below the window). Connectivity checks out good and I get about 20-21v and the full sun hasn't even hit it yet. The only thing is here though, this solar panel is meant as a trickle charging panel for car batteries and whatnot, and as such I only seem to be getting about 10-15ma (seriously wtf). I just resoldered this charging board from a solar lantern I had laying around, however I have a couple questions. I'm not entirely sure if this little board will handle the current/voltage (however it should as it's fairly low current from the solar panel) I've rigged up the board mostly like it was inside the solar lantern except longer/stronger wires. I have a switch on the positive line of the batt+ to the board. I soldered some thicker wires to the SOL connections on the board. Now I've seen a few of these and some are rather simplistic control boards and some actually have a bit of circuitry to them. This one appears to have resistors to current limit the LED (would be good so I don't blow it), however after following the traces on the board the led get's it's positive from that black transistor thing with 5 legs on it (what is that a power regulator?) The idea behind all of this here is that I can maybe charge up my cell with it or usb devices for example, but to have that come from a battery pack of AA's (to work as a buffer sorta-speak like a capacitor bank). I am a little miffled as how to make this work right the way I want it to. I would assume that once I get the battery pack situated I can disconnect the LED and use that connection for a charging cable, but then it would only provide power when theres no sunlight out (when you turn it on it turns the led on if there is no current coming from the solar panel). How can I do this guys I'm sorry to ask such stupid questions as I know to some of you's it's probably fairly mediocre but I'm a bit dumb.

Topic by Punkguyta   |  last reply


1000 LEDs controller

I want to make a project with 1000 LEDs, basically its a display or panel to used it in parties or shows, but all the information that I found was only with a commercial controller called "T1000s", my question is, how can I control this amount of LEDs to show images or gifs with an Arduino or other microcontroller. Thanks for the time and have a good day!!

Question by LuisF40   |  last reply


Treadmill Motor Control

I have a Horizon T101-04 treadmill that has a control problem. The motor is definitely good. I suspect that the motor control board is good, and the control panel board is bad. The control will not reset or go into diagnostic mode. I want to replace either the control panel board or the entire control system. The motor is 90V DC. For amperage, the motor label says "19A S6 25%" which has no meaning that I understand, other than perhaps that the maximum amperage is 19. The label says "APMS" rather than "AMPS", and I wonder if the "S6" is supposed to be "SC" for "stall current." All of the characters on the label are very legible. To replace the entire set of controls, I can use an industrial DC motor control, but how much horsepower does the control actually need to be able to provide? I don't think that the one on the treadmill actually provides 19A, and is probably close to 1 HP or so in its capability.  To replace the control panel with something else and keep the existing motor control, what do I need? Do I need some type of complex driver circuit? Does it need feed back from tach sensor to do a good job of keeping the speed steady?  If it will work well, I want a simple control set up like a KB Electronics KBMD-240D to which I will add a safety cut-off switch with a lanyard.

Topic by Ineedacircuit   |  last reply



Solar charged lead acid battery, how do I have automatic shut off and turn on so it does not discharge completely?

I have a battery with a charge controller between it and the solar panel. But if  I connect something low power to it, (like an aquarium air pump for a windowfarm or to power a small water feature),  it needs to shut off automatically before the battery discharges too much (if it is night time or cloudy).  Otherwise I have a dead battery. I don't have a deep cycle battery. Too expensive!  So any ideas how to have an automatic on off switch for this? Thanks,   Brian.

Question by gaiatechnician   |  last reply


how does a pmw controller work?

What shows that a panel is connected and that now its working

Question by cleofass   |  last reply


How to do a solar remote control car?

I love remote control cars, but I don't like using batteries. I'm living in Malaysia, we have sunshine almost throughout the year. I want to replace the rc car's batteries with solar cell to keep my rc car on going all the time. How can it be done with 1.5v AA battery times 4 replace by a solar panel in my remote control car? I got small garden lamp solar panel. Can that solar panel be use and how? Thanks in Advance

Question by ample   |  last reply


Best place to get vinyl lettering for console panel/button labels?

I'm trying to find best way add labels under buttons for my DIY electronics project. I've been filling laser etched letters with acrylic pain, but it's huge pain in the arse.  So I'm thinking of using vinyl letters instead. Has anyone used any services that can do small custom letter on the cheap?  Any recommendations?

Question by bratan   |  last reply


flat plate evacuated solar panel

Hello, I am trying to figure how to make an evacuated flat plate solar thermal panel ( sort of this one: www.genersys-solar.com/downloads.asp ). Main problem so far is how to keep air out (vacuum) . What sort of o-ring should I use ? Would it be possible to use Arduino to control internal vacuum and act a vacuum pump to keep it balanced in time ?

Topic by gabdab   |  last reply


Using a solar panel as a dusk til dawn sensor?

Someone on my youtube channel commented that you could use a solar panel as a dusk till dawn sensor. Let me explain the scenario. I used a solar panel to keep a battery topped up, which was wired with a digital timer switch to operate an automatic car antenna. At a certain time of the day, it would extend, and then at night, it would retract, according to the timer I programmed. So enter this person's comment:Can I just say, you don't even need the timer. Use the load outputs from the charge controller and the door will open as soon as sun hits the solar panel and close again at sunset.. The charge controller has the timer function already built in.Now he is obviously referencing a charge controller, which is NOT part of my set up. The solar panel I use has built in overcharge protection, so no need for a charge controller. Can someone tell me what he's referring to, or how to wire it? Would I need a different solar panel? Because the one I use doesn't play well with a charge controller. If I attach the solar panel to it, it doesn't charge the battery.Thank you to anybody that can help.

Question by beoirsicnarf   |  last reply


Old LCD Monitor converted to a light panel - how do I keep it lit?

I picked up an Acer LCD monitor that has a fault in the panel. I've stripped the panel off and want to use the remaining LED-lit screen and diffusers as an illumination panel. The panel turns on fine, but when the control board senses that there is no video source attached, it shuts the backlight down. Is there a way of 'spoofing' an input (it has VGA and HDMI ports) so that the control board thinks a monitor is connected and keeps the backlight on?

Question by Henmarsh   |  last reply


How to power a 12V motor with a pair of 250W solar panels?

I am on a team in a solar vehicle competition that doesn't allow for the solar panels to be connected to the circuit while running the 12V motor in a solar power race.   The solar panels are 24V @ 8.6 amps each. We have 2 of them, and are going to connect them in parallel for a total of 24v 16 ish amps. The panel's over voltage is 30.4V. The maximum current through the decades old (but free to us) brushed 12V electric motor is 35 amps. We are planning to run a DC to DC step down / voltage regulator between the Array and the motor, and a small charge controller to a battery for in between races. We are looking into charge controllers that allow a small battery and a load to be connected to them at the same time for charging and between races. The battery size is limited by the race organizers to 180Watt hours.    1st ?> Are charge controllers powered off of their Input sources? I.E. Will the charge controller even turn on with out a battery present? 2nd ?>   What would happen if my array is connected to the charge controller and the battery isn't connected to the charge controller? Wouldn't that be harmful to the charge controller or motor? 3rd ?> If charge Charge controller to motor is a viable option, then would a DC to DC step down still be necessary? Thank you in advance, Tony S.

Question by AnthonyS126   |  last reply


PWM to MPPT solar Charge Controller

I have an Hybrid Solar Inverter with 50A PWM solar charge controller inbuilt into it. It works on 24V battery bank. I am having 800Watt of PV module installed in the system. As my inverter is having PWM charge controller, I am not able to harvest maximum of power from panels. I want to know that, is there any arrangement or device which can be put in between PV panel and my Inverter which can increase efficiency or can act as PWM to MPPT converter for my Inverter? My Solar Pannels generates often 39V but I couldnt utilize the surplus power as it stepped down to 24 Volt.

Topic by Shashi BhushanS   |  last reply


What to do with a 200W solar panel? Answered

I recently got a nice 200W solar panel including controller. Initial plan was to use it to power the outdoor freezer during the summer and later on to get a 12V compressor for it to avoid the inverter. Now my agent did an inspection and demands the solar panel has to go as it is too big and makes the backyard look untidy. To sum it up: Not allowed to mount it on the roof, in the garden, in the backyard or against a wall.... Only option at this stage would be to mount it on my roof rack but I don't have the time for long camping trips anymore :( Quite reluctant to just sell it as I thought someone here might still have an idea how to "hide" a big panel so the agent won't notice next time.

Question by Downunder35m   |  last reply


Setting permissions on phpBB3 admin control panel to display forum? Answered

I have successfully install phpBB3. I have added new forum and deleted the existing demo forum. Now I am not able to see the new forum on my site http://www.nagarkatti.in/forum or http://nagarkatti.in/forum Need help what permissions to add for the forum to display so that user can post comments on the forum page. Thank you

Question by leathermall   |  last reply


can control panel on my treadmill be deleted and a PWM fitted ?

Hi all  i would like to build a 2x72  belt grind I have a old treadmill and have striped it down .I need help with deleting the main control panel and fitting a PWM if it can be done. I have bought a PWM but can't work out how to wire it up the PWM has power -and + and motor -and+ and where it needs to be wired in is in the first pic if you need more information please ask . any help would be great cheers Jason mains is 240vac  the treadmill motor is 180vdc and the wiring in pic 1 is 12v DC

Question by Jason W   |  last reply


What to do with a 45 watt solar panel?

I have 2 solar panels 1 is (15w) and the other is (30w) they both produce around 3 amps together in good wether Anyone have some good ideas on what to power with it. it is charging up a 17ah battery

Question by Daniel Deacon   |  last reply


How to connect usb headphone's wires with circuit boad{control panel}? Answered

I ripped off the wires from the control panel of my usb headphones and now i am completely lost especially at the input points of the control panel which takes the input from a wire which goes in the usb port of a computer.At the output i can see R=RIGHT L=LEFT GND=COMMON don't know about the other two M+ and M- and at the input side of the boad nothing is written where to connect which wire i don't understand please tell me how to connect these coloured wires on the input and the output of the CONTROL PANEL BOARD.I AM LOST!. I HAVE ALL THE IMAGES UPLOADED AND ALSO LABELLED you can see           http://universalquantifier.hostreo.com/USB%20HEADPHONES/

Question by LoRD CurZoN   |  last reply


How do solar charge controllers work?

I want to get a 5 watt 12 volt solar battery charger but I want to clear up my understanding of how they work before I get one.   FIrst:  The panel comes with a charge controller.  It says it cuts in at 13 volts.  What does that mean?  It starts charging once the battery drops to 13 volts?  That can't be it because 12 volt batteries range in voltage from 11.9 to 12.6 volts (charged/discharged).   Second:  "12 volt panels" output more than 12 volts right?: because batteries need 14.8 volts to charge.   I think they call it a 12 volt volt panel because it charges 12 volt batteries and not because it outputs 12 volts.  It must really output 22 volts and the charge controller steps it down to 14.8 volts. Thanks for the help Jacob 

Question by Noblenutria   |  last reply


solar panal charge controller

I have a charge controller.  I read the instructions and fixed the wires as instructed.  I fitted the load cables to an inverter but got no power through.  Everything works when I fit the inverter cables straight from the batteries.  Problem is that the load usage then does not show on the controller, so I have no way of knowing what if any, net power is going into the batteries.  As I am new to the setup I am trying to see what my appliances are using in an average day in relation to input from the panels. Do you think the controller is faulty.  Someone told me the load cables go straight to the load, but that seems wrong as I need to convert from 12 to 240 volts. Can anyone suggest the remedy. Thanks  

Question by campolady   |  last reply


solar battery amp hours and panel which one ?

Hello, I am working on a project that is solar powered. I am not sure what kind of solar battery i should get and equivalent  solar panel to charge it.. and regulator --- The parameters are: The 'show' will take place every hour for eight hours during daylight hours.. Each hour every 10 mins the system will switch ON and power will be needed to operate 25 automatic car antennas that draw about 0.8amps for about 1 minute show time. So every hour I will be drawing 25*0.8*6 = 120  ? -- I am new to this so i figure my calculations are wrong as 120amps seems a lot -- the system will also be powering an Arduino board which will be controlling the overall timing and puppetering of the work ie some coil relays or transistors for lower power consumption. this project will be installed in Germany in the summer with average sunlight conditions .. From my reading up on the subject I understand that it is not good to drain a battery, ideally half drain is max...could someone please advise what values i need for battery and solar panel.. thanks in advance .. Cc

Topic by carloc   |  last reply


3 wheeler small radio control unit help please

I am adapting a 1:6 scale motorcycle and sidecar for one of my GI Joe/Action Man figures.     I would like to put a 3 wheel radio control unit in the sidecar base so that when attached to the motorcycle it drives the combination.     I expect someone has made or adapted a 3 wheeler for this type of use but I can't find one anywhere.     Any help will be very much appreciated.    I've attached a picture of the motorcycle to show some of the upgrades I have already made (the lights are LEDs with an on/off switch in the side panel and coin cell in the pannier).    Thanks for looking, Bern

Topic by InvictaJ26   |  last reply


what size of batttery can be charge with a 43w solar panel? can i connct it with out charge controler to battery&invert Answered

What size of batttery can be charge with a 43w solar panel? can i connct it with out charge controler to battery&invert

Question by    |  last reply



Help in buying Solar Charge Controller?

I want to buy this. What is the best battery and solar panel for the same. I want  to use 6V rechargeable lithium batteries. I am guessing 2 in series will be required. Can I use array of Ni-MH pencil batteries with solar chargers? I will be mostly using the setup for emergency power supply in all rooms (5). I may also use night lamps as trickle drain.

Question by artworker   |  last reply


Can a 10 watt solar panel giving off 20V DC directly power a flywheel motor assembly with a 12V DC motor?

I am doing a science fair project that involves a solar panel, connected to a charge controller, connected to a 12V battery, connected to a switch system that can either go to a flywheel with a 12V DC motor or straight to a DC to AC inverter which leads to light standard light bulbs. The system worked (light bulbs lit) when I connected the panel to the controller to the battery to the inverter. However, when I had the battery power the flywheel and then have the flywheel output its energy to the inverter, the inverter shut down and would not work (red alarm went off). The flywheel is producing more than 10V (starts at about 11V) for at least 30 seconds, and the inverter's low voltage shut down in 10.5 plus or minus 5 volts. So why doesn't it work? Is the inverter messed up or is the flywheel outputing AC power? Also, when I connected the solar panel to the charge controller to the flywheel, the charge controller completely shut off. Are charge controllers not able to be directly linked to motors? And if I tried to directly connect the solar panel (which has 20V) to the flywheel (with a 12V motor), without a charge controller in between, what would happen?

Question by valmic   |  last reply


solar power?

I want to get these 12v solar battery chargers they come with alligator clamps to hook to the battery. i want to get enough for 200 volts so how would i hook the solar panels in series, and do i need a controller for each battery? and how would i rig that up and how can I get it going into all the 12 volt batteries without any damage to the batteries etc. And can this be done for less than $400 if the solar panels are $30 each and the batteries are $14 each. THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!!  THANK YOU!!!! oh and could you give me links for all the stuff I'm gonna be buying. THANKS!!!!

Question by jimmerforpoy   |  last reply


Charging a 70Ah 12volt battery with solar panels

Hi seen your ads on google very enlightening. Was wondering if you could advise me. I have 2 strip lights that i run off my 1000w invertor poweredby a 12v car battery that dies after a while. My kids bought me 2 x 20w solar panels12v. Can i just join the negs and positives together from the panels and connect straight to the battery neg and pos or is more involved. I also have another battery I can join too,Would i need diodes and a controller also? thanks in advance Dougie

Topic by DougieD4   |  last reply


How do I hookup 1 solar panel to trickle charge my 2 connected RV batteries?

I want to trickle charge my RV batteries (which are connected to each other) using one solar panel. If I hook it up to one of the batteries will that cause an imbalance in the charge between them? Or since they are connected, will it even out? Or do I need to connect it to both of them individually? Do I need to connect a charge controller between the battery/batteries and solar panel or will the built-in charge controller in the RV suffice? The solar panel does have a built-in blocking diode. I'm trying to learn all I can about solar power -- hope you can help me.

Question by arnold54   |  last reply


Ideas for a Teleoperated Project

I want to make my first Instructable, and I would very much like to do a project that is teleoperated via the internet. I have strong web application and embedded software skills, so I am doing this to combine the two with a web control panel and whatever the project will be. However, my mechanical and electronic skills are lacking (yet not absent). Does anyone have an idea of what the physical end of the project should be (what should be controlled)? At first I was thinking about doing a remote controlled car, but that is not original enough. I am looking for ideas of things anyone that goes to the site can control, so something that would be OK to give control of to the public. Thanks for your help, I will give credit to whoever comes up with the idea.

Topic by mappum   |  last reply


small solar panel,charge aa batterys,control voltage to unit.

Hi,I bought a acu=rite weather forcaster.Model 00638.It works good but when i bought it i thought i would use my rechargeable batterys.The book for this unit says no rechargeables because of higher operating voltages.The home unit uses 3-aa batterys and says 4.5 v. i have an outside sensor that has 4 aa batterys,i dont know what the voltage is there.          I would like to hook up a small solar panel to each and make it so i can leave in my rechargeables and not exceed the input. ideas?

Topic by ron17571 


Why do I get a voltage drop from my solar panels....? Answered

I am building my own solar panels and installing them as I go. So far I have mounted three 70 watt panels. I have a twenty amp controller and a 1500 watt pure sine wave inverter. With the array switched on and connected to the batteries (8 x12 volt 134AH) via the controller everything seems fine with a steady 13 -14 volt charge coming through. But when I connect the inverter the PV volts drop to around six and seven volts....The batteries are wired in parrale but not directly to each other. Instead I connected them to a buss bar hoping for equel drain and charge... I then connected the wires from controller and inverter to the bars... I thought this may have been the problem so swapped them all around having the controller wires to the battteries, then the inverter directly to the batteries... It made no difference and the voltages remained the same....I am hoping now that the reason maybe that I do not have enough panels to power the system and as I add more panels the voltage will rise...... l Any thoughts on this will be very welcome.....?

Question by SolarPoweredGardener   |  last reply


Does a 12V DC motor output DC current? ?

I am doing a science fair project that involves a solar panel, connected to a charge controller, connected to a 12V battery, connected to a switch system that can either go to a flywheel with a 12V DC motor or straight to a DC to AC inverter which leads to light standard light bulbs. The system worked (light bulbs lit) when I connected the panel to the controller to the battery to the inverter. However, when I had the battery power the flywheel and then have the flywheel output its energy to the inverter, the inverter shut down and would not work (red alarm went off). The flywheel is producing more than 10V (starts at about 11V) for at least 30 seconds, and the inverter's low voltage shut down in 10.5 plus or minus 5 volts. So why doesn't it work? Is the inverter messed up or is the flywheel outputing AC power? Also, when I connected the solar panel to the charge controller to the flywheel, the charge controller completely shut off. Are charge controllers not able to be directly linked to motors? And if I tried to directly connect the solar panel (which has 20V) to the flywheel (with a 12V motor), without a charge controller in between, what would happen?

Question by valmic   |  last reply


Need to find a Controller Board kit for LG LCD display LP121SP

I have salvaged the LCD panel from an old IBM Thinkpad 570 Laptop and planning to use it with Raspberry pi. The Model and Technical details of the panel are as under: Make :                          LG LCD Inc., Korea Model Number :           LP121SP Panel Size :                  12.1 inches Dot Resolution :           800 (RGB) x 600 (SVGA) Pixel Configuration :     RGB Vertical Stripe Pixel Density :               82 PPI Aspect Ratio :               4:3 (H:V) Form Factor :               Flat Rectangle Display Pixel Pitch :                   0.3075 x 0.3075 mm (H x V) Active Area :                 246.0 x 184.5 mm (H x V) Orientation :                  Landscape type I want to convert this panel to use with Raspberry pi, but unable to find a suitable converter board kit. I have added few images also here for reference. Any help will be highly appreciated.

Topic by antoniraj