In this tutorial we will show you how to make a paper house that lights up as it gets dark. To do this we will use some Bare Paint, a battery, some standard LEDs, an LDR (light dependent resistor), a transistor and a 100K resistor.
To help you complete this project we've made the components and template available to buy in the House Kit available from our shop at www.bareconductive.com.
Otherwise, you can check out the Components section of our House Tutorial to find out where you can get all the components to make these on your own!
At Bare Conductive, we love playing around with Paper Circuitry and enjoy sharing fun projects that we, or our community members have come up with so make sure you check out our website for more great projects!
Step 1: Materials You Will Need
Double sided tape
Step 2: Components
Bare Paint (if you are using a jar you will also need a paint brush)
Mini LDR 202403
2 Bright LED's
9V Battery Clip
Step 3: Step 1: Download, Print and Cut Out Your Templates
Step 4: Step 2: Cut Out the Windows Door, and the Chimney Space for the LDR
Don't forget the cut out the Chimney space for the LDR.
Step 5: Step 3: Create Fold Lines
Step 6: Step 4: Fold Up Your Template
At this stage you could decorate your house, why not draw on window boxes or roof shingles.....
Step 7: Step 5: Sticking Double Sided Tape on the Tabs.
Make sure you stick the tape on the BLANK side of the template.
If you would like to be able to remove the battery don't stick tape on this section of the template, this will enable you to remove the battery once the house is completed.
Step 8: Step 6: Preparing You Components
The Transistor has three legs, it also has a flat side and a rounded side. Bend the left and right legs out to the left and right sides and the middle leg out towards the rounded side.
Place the transistor onto the template, you should have the middle leg and the rounded side facing left.
LEDs (Light Emitting Diode) have two legs and are polarised - the long leg is the positive (+) the short leg is the negative (-). The LED icons on the template are the circle with the triangles, you'll notice that there is also a (+) and a (-), these should correspond to the legs on the LEDs.
If you look from the top down at the LED you'll notice that it is not completely round, there is a flat side. This flat side should be on the same side as the short leg of the LED the flat side is like the negative symbol (-). If you trim the legs it will help you see which side is the negative side.
Trim the legs of the LED with your snips.
Bend the legs of the LEDs out and place on the template. Remember to put the negative (flat) side at the top and the positive at the bottom.
The 100K resistor has two legs but unlike some of the other components it is not polarised so it does not matter which way round it goes. Trim the legs to be about 1cm long and place onto the template.
LDR (Light Dependant Resistor). It does not matter which way round this component goes as it is not polarised, however remember to put it in FACING OUTWARDS, so that the top goes through the hole.
Trim the legs of the LDR with your snips. Bend the legs and place on the circuit, FACING OUTWARDS.
The red lead of the clip is the positive (+) and the black lead is the negative (-)
Trim and strip the lead so that they are approximately 5cm long. If you don't have strippers you may be able to do this very carefully with the craft knife.
Using some double sided tape stick the back of the plastic part of the clip to the template.
Take some masking tape and stick the red and black lead to the template, making sure the line up the exposed cable to the grey lines.
Step 9: Step 7: Glue Your Components to the Paper With Bare Paint
Blob on a bit of paint onto all the legs of the component and the exposed wire of the battery clip leads. Make sure to stay within the grey area, don't worry too much but it will keep your house cleaner, it is always nice to have a clean house.
It might be easier to lift the component off the page, blob on some paint then stick the component back.
Step 10: Step 8: Fill in the Rest of the Circuit
Once you have finished drawing the circuit, wait for it to dry.
Step 11: Step 9: Put in the Battery.
The LDR should be facing down onto the table so the LEDs should be on when you put the battery in.
Step 12: Troubleshooting
1. Is your paint completely dry? If not leave it overnight or put in a warm place.
2. Are any of your components short circuiting - is the paint joined up underneath it? If so take out the component and remove the paint with a knife then re-apply.
3. Are your component in the right way round? Check your component key to make sure you have the polarity and for the LDR direction correct.
4. Are your lines too thin or broken? Your lines may be too resistant to pass sufficient current - try making them wider or thicker.
Step 13: Step 10: Fold Up Your House
Once your house is complete, it should light up as it gets dark!