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Anonymous Poster #1

Solar Night Lamp Problem

09/19/2019 1:19 AM

I have purchased solar night lamp on line recently.Actually I wanted that its should get switched on automatically when there is no light (dark) and remain like this till gets discharge.

But what I received is, it gets on when senses some object and gets switched off as the object is gone. There is a snesor for sensing object.

I want that is should remain continuously on without sensing any object, means it should be 'on' automatically sensing darkness ( No object) and remain like this till charge lasts.

Can any one help/suggest how to get this option? I have tried with covering the sensor with black tape but it does not work.

Thanks

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#1

Re: Solar night lamp problem

09/19/2019 6:34 AM

Attach a solar panel to an LED and a battery.

Pretty difficult

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#2

Re: Solar night lamp problem

09/19/2019 6:56 AM

You have not explained much about what you have....

You must have a battery. You have a lamp, turned on by "no-daylight" AND movement detector usually infra-red PIR. Probably battery charged by solar panel, but solar panel can double as light detector.

Diagram above is about simplest way such a system could work.

  1. The FET acts as a switch for the lamp. It will switch on if voltage at its input, at left, is more than 4 volts. Resistor Rf will put the FET ON, unless something connects FET input to negative (-).
  2. During day, transistor L is turned on by high voltage from solar panel using zener diode Z, which conducts only above a certain voltage - no voltage in dark. In day FET & lamp are off.
  3. At night L is off, but movement detector PIR transistor P must also be off for FET to switch on - so lamp will come on with movement.

If it is really so simple, then cutting wire "y" from PIR will get what you want. Cutting wire from PIR to + positive supply would probably work as well.

Try to cut wires where you can easily reconnect them by stripping insulation & twisting ends together - resolder if you can.

Let us hear how you get on....

67model

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#7
In reply to #2

Re: Solar night lamp problem

09/19/2019 5:03 PM

Popular type of detector - extreme left of diagram - in 3 lead TO5 cylindrical housing can be disabled by shorting two pins circled together; that is the two pins which are not connected to positive supply.

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#3

Re: Solar night lamp problem

09/19/2019 8:01 AM

Most of these type lights have a high/low mode of operation and cannot sustain the high output for very long under the best circumstances...so you're probably going to need a bigger solar collector and larger battery, easier to just buy the proper light for your purpose...

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#4

Re: Solar night lamp problem

09/19/2019 8:24 AM

The top of the line PWM charge controller I purchased for under $10 has a "continuous" output. It shuts off if the battery voltage drops below 10.2 VDC.

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#5

Re: Solar Night Lamp Problem

09/19/2019 12:29 PM

You obviously bought the wrong type of lamp. There must be dozens of the ones you wanted. Just read the descriptions more closely. Modifying the one you have is not practical.

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#6

Re: Solar Night Lamp Problem

09/19/2019 12:32 PM

Walmart sells this type of light for a couple bucks. They must be available somewhere else.

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#8

Re: Solar Night Lamp Problem

09/19/2019 5:07 PM
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#9

Re: Solar Night Lamp Problem

09/20/2019 9:07 AM

The sensor detects movement, try a piece of Gaffa tape over the sensor.

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#12
In reply to #9

Re: Solar Night Lamp Problem

09/20/2019 12:02 PM

Then it will never come on!

Walkway lights do what the OP wants, for a few dollars each, usually sold in sets of 4 or more.

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#10

Re: Solar Night Lamp Problem

09/20/2019 10:49 AM

Just put one of these in front of it. Probably not solar though...

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#11

Re: Solar Night Lamp Problem

09/20/2019 10:55 AM

Why not just send it back and return to have it replaced by a “dusk-to-dawn lights” instead of what you received which is apparently a “motion sensor” light..

It will be a lot easier and possibly cheaper to do..

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#13

Re: Solar Night Lamp Problem

09/26/2019 2:46 AM

Deleted.

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67model (2); dkwarner (1); harley (1); JE in Chicago (1); jhowdy (1); JWthetech (1); lyn (1); Nigh (1); PWSlack (1); SolarEagle (1); StandardsGuy (1); vsar (1)

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