Techgenie

Making a spy camera from a phone camera is quite complex process.First you need to disassemble the phone and extract the camera module.Carefully open the camera module to remove the IR filter from the camera.Fit the camera module and assemble the phone.Use a circular IR LED panel available on ebay or amazon and paste it around the camera lens.Power the IR LED using the phones charger port or an external battery.Now, turn ON the IR LEDs & switch to camera app in the phone. You will be able to clearly see through the camera even in pitch black.

I am glad you liked it but i didn't quite get what you meant by analog of TP4056

It depends on the gauge and length of the nichrome wire. You can refer to the datasheet for the nichrome wire that shows the relationship graph between the temperature and current to the length and gauge of the wire. However, i used a 26 AWG nichrome wire of about 4" length and current source of about 2000mAh.

Yes, its absolutely true that if not used properly Li-ion batteries can be dangerous, that is why i have recommended to use a TP4056 charging module that will prevent the over charging and discharging of the batteries.

Its quite easy, although, i would also recommend to use a TP4056 charging module, that will protect over charging and dis-charging of the battery, making this a wonderful gadget.

Yes, it is true, but just using a TP4056 charging module in the circuit will prevent the batteries from overcharging as well as discharging. It will also make it simple to charge the lighter with just a 5v wall adapter.

Yes, it is also quite simple to make.

I am glad you liked it. However, i have not yet faced the issue of decreased magnetic force due to heat or battery voltage. Also, since nickel is one of the metals with high electrical conductivity, there is no significant loss of current as compared to conventional copper wires.

Yes and these work really well.

Thanks for appreciating my work...:)Its always good to tinker with and make some awesome stuff.

I am glad you liked it..

#rch, Thanks..

#BigAndRed, yes a 18650 holder works well but i used a PCB because it helped save some cost and also a satisfaction to try something new that actually works well.

#Pentagrid, yes the charger is indeed rated for 5v but TP4056 module will cut the power after charging the battery to 4.2v

Yes, it can't be compared to the commercial products but it does my work to charge the old 18650 cells for my projects and can only be made in around $9.

Yes, that seems like a good idea, will give it a try when i find some extra time.

Yes, its true that the charger modules cut off supply current themselves when the battery is charged but there are times when you only need to charge one or two cells, the switches are then used to completely turn OFF the remaining unused modules.

I am glad, you liked it..:)

Hi fun4joe,Its quite easy to connect this mechanism to a bike wheel. You need a small rubber wheel(as in toy cars) and attach it to the motor shaft.Now, find an adequate place on the bike to fix the motor such that the wheel touches side surface of the bike wheel. Now, when the bike moves, due to friction, even the wheel connected to the motor shaft will move and in turn generate power on the motor terminals.Attach wires to the motor terminals and stretch them to the handle where the mobile can be charged placed on a holder.You can also connect LEDs to the motor and attach them to the bike frame, such that when the bike moves, the LEDs will glow giving a very cool effect.

The motor i used generates about 500- 600mA at 12v, that is regulated to 5v using 7805. However, a simple way to increase current will be use a different motor. You can also eliminate the 7805 and then you will need is to make a new circuit that steps down this 12v to 5v and substantially increase the current.I would be glad, if someone here could contribute to what kind of circuit will be most efficient.

No, this one is made using a receiver and transmitter remote removed from an old broken remote control toy.

Thanks bro..

Yes, this USB plug provides about 2A at 5v that is enough power for basic DIY projects.

Thanks for appreciating my work.With 12v it will be much faster and better, if possible for greater control, also connect a speed controller to the circuit. There are many articles on google that show how to add the speed control functionality to a DC motor.

Thanks for appreciating my work. It is a simple superglue that is available in market, however, i have just attached a syringe needle to the bottle.

The 18650 li-ion cells are chargeable and in this i have used a TP4056 charging module with protection that enables me to charge the car easily with a 5v mobile charger.

Yes, that is true, li-ion batteries can sometimes be dangerous if not used appropriately. This is why i have used a TP4056 module with protection to prevent over discharge and over charging of the battery.

I think to download an instructable, you should be a pro member on the site. Why do you need to download this anyway?

The size if the wire depends on the power supply and use. I needed a portable handheld cutter, so i used a 28 AWG nichrome wire that was able to heat up quite well in just few seconds.

Connecting a TP4056 module is very simple. You will easily figure it out once you see the charging module. Everything in the circuit remains same except the battery. The battery is connected to the module instead of nichrome wire & switch. The output terminals of the module are connected to the nichrome wire & module.

I have no idea about it, i havn't used it to cut 3D prints yet.

Including a switch is quite simple. Take a simple ON/Off switch and connect it between the +ve battery terminal and the +ve LED terminal (i.e. one switch terminal to the positive battery terminal and the other terminal to the "+ve" LED terminal).

#robobot3112, Yes, a differential drive is a good idea but that required some parts to be made using 3D printing. I have kept that upgrade for the next & more efficient RC car.

#TypeNameHere Thanks for the tip. Yes, it can damage the battery. It is better to connect the battery to a TP4056 (with protection) charging module which will not only protect it from over discharge but also make it convenient to charge it easily.

Thanks, it does seem like a good idea to make the car more attractive and useful.

Thanks..:)

Yes, if you are using the Atmega16 microcontroller, then the you can even directly burn the provided hex code. Also, the code is complete to be compiled and run the car.

Also its very quick to make, just about few free minutes and you are done. Fun to watch. All the best..:)

This is a 18650 Li-ion battery that can be extracted from any old laptop battery or powerbank. However, you can also get these from ebay: https://rover.ebay.com/rover/1/711-53200-19255-0/1...

Hi, it is just a simple 18650 Li-ion battery that you can extract from any old powerbank or laptop battery. However, you can also get one from ebay: https://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338042393&mpre=https%3A%2F%2Fwww.ebay.com%2Fi%2F201955781614%3Frt%3Dnc

Thanks a lot..:)

The LEDs and motor works only with the energy generated by the motor, rotated barely with hands that is the only reason it is named as free electricity generator, we do not need to pay any price for this, except, ofcourse some work done by hands and yes, the setup does cost few bucks.

Glad you liked it..Thanks

Thanks..

Yes, with this method, we can make reliable holders for almost every type of battery. Thanks for appreciating my work.

Yes, that's true but this one is quite simple.