Categories

Archive for the ‘hacks’ Category

Brute force computation for cheap log digital potentiometer

Friday, December 9th, 2016

Michael from Acidbourbon writes: This article covers the attempt to build a digital logarithmic potentiometer out of two linear potentiometers. The benefits of this concept Linear digital potentiometers can be easily procured and don’t cost much There are IC packages with two or four modules inside anyway The resulting logarithmic...

Tags: ,
Posted in hacks | No Comments »

Updating the KLN89B

Saturday, November 26th, 2016

Dmitry Grinberg writes, "Updating a 1996 plane GPS the 2016 way.  Reverse engineering of old proprietary data cards, formats, binaries, creating of new tools to perform updates and their final open-source release." More details at Dmitry Grinberg's blog. Via the contact form.

Tags:
Posted in hacks | No Comments »

Automatic volume tracking for a TV

Wednesday, October 5th, 2016

An automatic volume tracker by KA7OEI: It occurred to me that I did have a reference on which I could base an outboard volume control: The internal speakers of the TV. I surmised that I could "listen" to the audio level coming out of the speakers and based on that, adjust the...

Tags: , ,
Posted in DIY, hacks | 2 Comments »

RC2014/LL and RC2016/10

Monday, October 3rd, 2016

Scott Lawrence has written an article detailing his Z80 homebuilt computer, the RC2014: The RetroChallenge is upon us again! This time around, I plan on working on my Z80 homebuilt computer, the RC2014. (Website for RC2014, Order a RC2014) For a few months now, I've had my RC-2014 computer built, and...

Tags: , , ,
Posted in DIY, hacks | No Comments »

DIY USB power bank from laptop battery

Tuesday, August 23rd, 2016

A DIY USB power bank made from an old laptop battery from DoItYourselfGadgets: A situation many can relate to: an empty smartphone battery and no outlet around! That's exactly why I recycled an old laptop battery into an USB power bank. This article will show you the basic powerbank circuit consisting...

Tags: ,
Posted in DIY, hacks | No Comments »

A low-voltage disconnect for 12 volt lead acid and lithium batteries

Thursday, August 11th, 2016

KA7OEI writes: The avoidance of overcharging is usually pretty easy to avoid: Just use the appropriate charging system - but overdischarge is a bit more difficult, particularly if the battery packs in question don't have a "protection board" with them. Lead acid batteries (almost) never come with any sort of...

Tags: , ,
Posted in DIY, hacks | 2 Comments »

Hacking HAKKO 936

Friday, August 5th, 2016

Simon Ludborzs writes: For many years I lived with dodgy epoxy fix on the handle, and finally swapped it out with a cheapie from eBay. All the HAKKO bits (tip, barrel, heating element) got transfered to the plastic handle and all was good in the world. Except for the heater...

Tags: ,
Posted in hacks | No Comments »

Your laundry is done

Monday, August 1st, 2016

Xose from Tinkerman has published a new project: I often forget my wet clothing in the washer and after a day they really smell... so I thought about monitoring my washer and get a notification in my phone when the laundry is done. An ESP8266 based Sonoff by ITead, current monitoring...

Tags: ,
Posted in hacks | No Comments »

9V/1kV DC/DC converter

Wednesday, July 20th, 2016

Robert Gawron's home insect electrocution project: Currently I'm working on a device to electrocute home insects like cockroaches, progress is small because they are smarter than I thought, but that's a different story. For that project I had to find a source of sufficient high voltage and output power. Presented...

Tags:
Posted in hacks | 4 Comments »

DIY smart glasses

Friday, July 1st, 2016

Harris has been working on his DIY smart glasses: The glasses themselves are based around an STM32F051K8 microcontroller (LQFP32 for easy soldering!). All the firmware is custom written though I got the LCD driver initialization codes from the BuyDisplay examples. The firmware is written using a somewhat “co-operative scheduling” with...

Tags: ,
Posted in DIY, hacks | 1 Comment »

AUX in Volvo HU-XXXX radio

Friday, June 3rd, 2016

Karl Hagström wrote an article detailing how he hacked the stereo (HU-650) in his Volvo V70 (2007) and added his own AUX input: Why, why, why isn't there an AUX input on my car stereo from 2007? Yes 2007 was before the big era of smartphones, but everyone owned a couple...

Tags: , ,
Posted in Arduino, hacks | No Comments »

Using Tronsmart Pavo M9 for HDMI input streaming

Friday, June 3rd, 2016

Danman wrote: Thanks to a tip of my reader, I found a relatively cheap (69Eur) Android box with HDMI input and record ability. I thought that it should be possible not only to record the HDMI input but also to stream it in realtime so I ordered one for experimenting....

Tags: , ,
Posted in Android, hacks | No Comments »

Butchered USB TTL serial adaptor

Tuesday, May 17th, 2016

Turning a USB to RS232 adaptor into a USB to TTL serial adaptor by Aaron Brady: I didn’t want to wait, so I had a look around what we had on hand. We did have a spare RS232 to USB adaptor. This one speaks the full ±15V, and I briefly considered...

Tags: ,
Posted in hacks | No Comments »

Hacking a UART where there never was before

Tuesday, April 26th, 2016

Thanks to Andrew for sharing – check out the full post on their blog, MOAM Industries. As part of a prototype developed 12 months ago I was tasked with reading measurements from a blood pressure cuff [sphygmomanometer] in real time. Not surprisingly there are no consumer level devices that have...

Tags: , ,
Posted in hacks | 1 Comment »

BeagleBone Black GPIO Benchmark

Tuesday, April 26th, 2016

Joonas Pihlajamaa from Code and Life writes, " I've previously made a GPIO benchmark of Raspberry Pi 1 and 2, and have always wanted to see how BeagleBone Black would stack against the Pis. I recently got one so the obvious thing to do was to see how fast the...

Tags: , ,
Posted in hacks, R-Pi | 4 Comments »

Bringing a vintage telegraph into the digital age

Thursday, April 7th, 2016

Kyle Gabriel writes: I recently inherited a key on board (KOB) telegraph that my late grandfather used to practice Morse code with when he was a kid (Figure 1). A little bit of curiosity of how it would work and a little bit of displeasure from seeing it sit and...

Tags: ,
Posted in hacks | No Comments »

Behringer v-tone GMX212 Hybrid tube amplifier mod

Monday, April 4th, 2016

Davide Gironi wrote a post on his blog showing how he modified the Behringer v-tone GMX212 Hybrid tube amplifier: For this project I've used 12AX7 vacuum tube. This tube is one of the most used for the guitar preamplification. So there are many resources available on web. The first problem i...

Tags: , ,
Posted in hacks | No Comments »

Hacking DTM0660L based multimeters

Saturday, March 26th, 2016

Kerry Wong writes: In my previous post, I did a review of the 6000 counts ennoLogic eM860T true RMS multimeter. This meter is based on a signal chip design using the versatile DTM0660L DMM chip. Besides the ennoLogic eM860T, several other multimeters such as UNI-T 139C, Velleman DV4100, Tekpower TP40...

Tags: ,
Posted in hacks | No Comments »

Ultimate geeky desk sockets

Wednesday, March 16th, 2016

Here's a geeky desk sockets project from Luke. He writes: I wanted a few more functions than just a desk USB Hub. Looking on the net i came across this youtube video . This was the type of thing i was looking for but it had far too many functions...

Tags: ,
Posted in hacks | 2 Comments »

STM32 FM song transmitter using tricky crystal feedback modulation

Monday, March 14th, 2016

Vinod writes, "This is an FM transmitter directly made from STM32F407 discovery. It transmits the wav file stored in internal flash via FM at 100MHz. The modulation over here is happening by a tricky feedback from the analog output of the same mcu to the crystal oscillator there by disturbing...

Tags: ,
Posted in hacks | 1 Comment »

Next Page »

Recent Comments

  • coppice: If all you have found so far is fake iphones, the next place you should visit is SEG in Hua Qiang Bei. Get out of...
  • Edward Cooper: Great article and good find on the markets! Any chance you can provide the locations of these places? I'm in Shenzhen at the moment and...
  • Dan: I'm up for one
  • TrickyNekro: Always in for another bunch! :-D
  • mol-1: Maybe this time !