Dan Beaven has written up documentation on his Chinese K40 Laser upgrade: I’ve wanted to start playing with Laser Cutter/Engravers for quite a while. I finally happened across a great deal on a Chinese made 40 watt Laser Engraver with the Moshidraw software and control hardware. Wanting something I can modify and that is of better […]
Category Archives: hacks
Hatching chicks in a hacked mini fridge
Do you need an incubator for hatching eggs? avgfitfreak shows you how to easily make a DIY egg incubator out of an unused Monster drink refrigerator: Since an incubator needs to be hot not cold, I installed a piece of heat tape (aka – heat mat for reptiles). This was taped onto the back wall behind […]
Data logger deluxe version
An update on LuckyResistor’s data logger project we covered previously: Just to let you know the deluxe version of the data logger is almost done. The hardware is ready and tested – currently I finish the menu based software for the data logger. Menu based control with 5 capacitive inputs Record, view records, send records […]
Contactless payment ring – A tutorial on NFC antenna coil design
Jatinder writes, ” I have a done a video about a contactless payment (NFC) ring that I have made. The video talks about NFC antenna coil design and how I used the concepts to make the wearable ring.” Via the contact form.
A XSVF assembler/disassembler in python
Marcelo Roberto Jimenez wrote an assembler/disassembler for XSVF, he writes: As a sequence of my last project, the JTAG/XSVF library for Arduino, I felt I needed a XSVF assembler and disassembler, so that I could hack JTAG a little bit. I found that XSVF is very convenient, much more than SVF when you are dealing […]
Moteino IoT sprinkler controller automation
Felix of LowPowerLab writes: Another node type is now available on the Gateway automation interface: a sprinkler controller. This is achievable through a board I designed to be able to control many outputs. I call this board IOShield and it features two 74HC595 serial to parallel shift registers. The IOShields are daisy chainable and can […]
Vulcan-74: A 6502 Retro MegaProject
Radical Brad over at the 6502.org forum has been working on this cool 7400 logic VGA video game system, Vulcan-74: The Goals… Video must be perfectly stable VGA, putting out 256 colors at a resolution of 400×300 using an 8 bit color space divided into RRR-GGG-BB Video must include full 256 color 400×300 bitmapped screens with a […]
Olympus RS-24 foot pedal mod
Rupert Hirst writes: For a while now, I have been toying with the idea of modifying a transcriber foot pedal into a programmable HID device. This could be useful for those complicated keyboard macros , Push to Talk or even for a more natural feel in racing type games, although not with proportional control. Your […]
Calculator for audio output transformers
Dilshan Jayakody writes: Audio output transformers are heavily used in vacuum tube and some (older) transistor base audio power amplifiers, but these days output transformer are quiet hard to find and expensive item. For homebrew projects the best option is to construct those transformers by ourselves and this script helps to calculate winding parameters […]
Therm: a Tiny PID controller
A tiny PID controller project from Ethan Zonca: Therm is a very small PID controller with an OLED display, thermocouple interface, and USB port. It can switch an external solid-state relay for driving large loads, or a transistor for driving small loads. When attached to a computer, it enumerates as a USB serial port for […]
Simple scalar network analyzer
rheslip blogged about his simple scalar network analyzer project: The principle is to stimulate an electrical network with a sinewave and measure the magnitude of the response. If we sweep over a range of frequencies and measure the power transmitted through the network we can determine its frequency response. Transfer from the input port (1) […]
Teensy GPS Logger redesigned in smaller version
An update on J3tstream’s Teensy GPS logger project we covered previously: The last and final design, the Teensy and GPS is directly powered from 3.7v li-on batt. Power button in red, black button to enable charging in case of using +5v AC adapter. SDCard socket is mounted at the back of pcb. Project info at […]
Are my documents safe in the root cellar at ~80% humidity?
luckyresistor has been working on his Data Logger project: There is a large cellar where I could store unused items and documents, but the catch is the humidity there. It is a root cellar near a small brook and the humidity varies between 75% up to 90%. Archived material should never be exposed to humidity […]
Yet another scanning Monochromator build
Kerry D. Wong writes: A while ago, I saw a video on the signal path in which Shahriar modified his Verity EP200Mmd monochromator/detector and turned it into a scanning monochromator. Inspired by his work, I decided to do something similar. Since I do not have the equipment to make the mechanical pieces, I decided to […]
Geiger counter with SBM20 tube
j3tstream writes: I “rebuild” my Geiger counter, the SBM-20 tube was initially inside the box, i have put this one inside a 32mm diam plastic tube, for more convenience, wired through a XLR3 cable. This counter is from “Electronique-Pratique” n°368, a french electronic magazine. Shem, pcb, and PIC hex & C source code available. More […]
Automatic feeder mod makes cat work for food
Here’s a cool automatic feeder for your cat that dispense food in exchange for a wiffle ball by Benjamin Millam. He wrote a post on his blog detailing its assembly: I used an Adafruit RFID reader to detect RFID tags embedded in the wiffle balls: the balls are cut slightly, enough to slip in an […]
Hacking the Digital and Social System
Voja Antonic writes: When you live in a totalitarian, controlled and “happy” society, and you want to be a hacker, you have to hack the social system first. Being just an engineer doesn’t cut it, you have to be a hypocrite, dissident and a smuggler at the same time. That’s the motto of my personal […]
Plugin soldering iron temperature controller version 2
As a follow up to the Soldering Iron PID temperature controller post, Mike Doughty of PCB Smoke blogged about on how to modify an ordinary plugin soldering iron to work with a PID temperature controller – second version: This new version has some improvements since the first version back in April, 2015. The soldering iron […]
TruPlay- Hacking into an OVC3860 based bluetooth A2DP adapter using the MSP430
TruPlay – controlling bluetooth A2DP devices using MSP430and OVC3860 from Rohit Gupta: I wanted it to 3D Print a new case but couldn’t so, made a PCB that would sit on the Top of the adapter and command it. I was lucky to have a 3.3V Regulator inside the adapter so, an extra regulator was […]
Sniffing GSM traffic with HackRF and GNU Radio
HackRF and exploring GSM signals. While my friend and colleague Simone was visiting our ZIMPERIUM – Enterprise Mobile Security TLV office, we got our hands on HackRF and hacked together the unguarded boarders of Radio Frequencies. Simone had the great patience to try and explain me the boring world of complex numbers and friends (more […]