Just hacksaw through the lower end of the metal base and then just peel off the rest of the metal with pliers. This leaves you with a closed glass bulb haveing a glass rod stick out at the bottom.
Break off that rod. Then immobilize a belt sander somewhere or ask someone to hold it for you and gently but firmly press the base of the lamp against the turning sandbelt, Turn the lamp a few times as you probably will not push it sgainst the belt completely straight. Very soon you will have gone through the base and the inner glass off the lamp will be loose and yr bulb will be open.
Reply 10 years ago on Step 5. This will be way too late, but the flux paste used for plumbing will nearly always allow your solder to stick to metal that doesn't want to take it. Cleaning the metal with some abrasive paper or wire wool also helps. I'll try this out, but even if it doesn't work, thanks anyway!
I'm having trouble cleaning out the base How did you do it? And when it is cleaned how would i get the wire through the glue at the bottom to the solder on the bottom?
Reply 11 years ago on Introduction. Probably not as much as others are expecting. The LED will blow almost instantly, and that would break the circuit. Connecting the battery to AC could make it blow or cause a fire, but the LED would act as a circuit breaker in this case. Reply 12 years ago on Introduction. You get a little fire, a lot of nasty smoke and the bulb will probably explode ok, the last one might not happen!!!
Introduction: Mysterious Lightbulb Prank. By Kipkay Kipkay Videos Follow. More by the author:. About: Tinkerer, hackster and prankster. More About Kipkay ». Have you ever seen the Magic Lightbulbs magicians use?
Here's how to make one that will drive people crazy! Thanks to Brad Graham for the fun idea! Watch the video and then follow along with the Instructable. It should be noted that public sources can be consulted if only visual access to the PCB is needed.
The American Federal Communications Commission FCC often release detailed tear downs of communications equipment which can be a great place to start if the hammer technique is considered slightly over the top [4]. Once the correct JTAG pins for each of the chips were identified, a process which required manual pin tracing, specification analysis and automated probing, we were ready to connect to the JTAG interfaces of the chips.
In order to control the JTAG commands sent to the chips, a combination of hardware and software is required. After configuring the hardware and software pair, we were in a position where we could issue JTAG commands to the chips.
At this point we can merrily dump the flash memory from each of the chips and start the firmware reverse engineering process. Now we are in possession of two binary blob firmware images we needed to identify which image is responsible for storing and encrypting the WiFi credentials.
This analysis identified that an AES implementation was being used. AES, being a symmetric encryption cipher, requires both the encrypting party and the decrypting party to have access to the same pre-shared key. In a design such as the one employed by LIFX, this immediately raises alarm bells, implying that each device is issued with a constant global key.
If the pre-shared key can be obtained from one device, it can be used to decrypt messages sent from all other devices using the same key.
In this case, the key could be used to decrypt encrypted messages sent from any LIFX bulb. References to the cryptographic constants can also be used to identify the assembly code responsible for implementing the encryption and decryption routines.
With the assistance of a free software AES implementation [7], reversing the identified encryption functions to extract the encryption key, initialization vector and block mode was relatively simple. The final step was to prove the accuracy of the extracted encryption variables by using them to decrypt WiFi credentials sniffed off the mesh network. Armed with knowledge of the encryption algorithm, key, initialization vector and an understanding of the mesh network protocol we could then inject packets into the mesh network, capture the WiFi details and decrypt the credentials, all without any prior authentication or alerting of our presence.
It should be noted, since this attack works on the Context informed LIFX of our research findings, who were proactive in their response. Context have since worked with LIFX to help them provide a fix this specific issue, along with other further security improvements. Of course, as with any internet connecting device, whether phone, laptop, light bulb or rabbit, there is always a chance of someone being able to hack it.
If you're interested in our product security evaluation services. Back View All Services. Specialist cyber security consultancy Whether you have a specific cyber security problem, or just want some general help with improving the security posture of your organisation, we can help. View All Services. Back All Industries. Committed to ensuring your security We have worked with a wide range of organisations of different types and sizes, across many different sectors.
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