Bus Pirate smart card shield by Yaehob: Tired of playing with wires, breadboard and so on to interface synchronous smart cards with bus pirate, I made a kind of shield. Thank you Arduino for teaching me this way of thinking :-) … Read more
Author Archives: DP
Every Friday we give away some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget … Read more
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. Hacker Camp Shenzhen volume 3: Reflow open for registration DIRTY TUESDAY: Chinese Shipping Apocalypse Hackers in Shenzhen: Trev from UK Bus Pirate v4 … Read more
In this video Stijn Kuipers demonstrates his Yellow-Panel microgameboy: The recent DirtyPCBs.com paneling experiment resulted in a nice new addition to our prototyping toolbox. The yellow panel contains: Wolfsom SMT microphone breakout with small amplifier QFN24-to-dip adapter Freescale K20 TFT backpack (enhanced … Read more
ajoyraman posted a tutorial on how to make a DIY USB-matchbox oscilloscope, an instructable here: In order to economize on the cost of an enclosure while still providing an aesthetic unit the Aj_Scope2 is enclosed in a large size cardboard … Read more
An audio power amplifier based on LM1876 from Electro Labs: We are building another enjoyable weekend DIY project. This is an audio power amplifier based on LM1876 which can deliver up to 20W per channel into 4 or 8 ohm load and … Read more
Davide Gironi writes: A Spark.io library to retrive RMS and Spl value from an audio input. This library reads data from an ADC pin and returns the RMS value of the input simply using RMS avarage. The root mean square … Read more
Chris Holden made a font library for a Nokia 5110 display using a PIC microcontroller and Oshonsoft. He writes: Having left the 1980′s behind, we decided to write our own “libraries” to write text onto the Nokia 5100 display, using a … Read more
Trev from the UK talks about his experience in Shenzhen, China. There’s more and more hackers visiting Shenzhen to check out the world’s largest electronics market and manufacturing ecosystem. This semi-regular series asks who they are and what they found.
Baoshi of DigitalMe wrote an article detailing his minimalism ATTiny2313 development board build: The AVR chip I’m talking about is Atmel ATTiny2313, in SOIC-20 package. To make the development board, I bought some 28 pin SOIC/SSOP to DIP adapters. These adaptors usually come in … Read more
A GSM remote control project designed by Vassilis Serasidis: Two years later I built another one remote control based on GSM module. I choose the GM-47 sony-ericsson module because it was very easy to handle it via AT commands. Moreover, … Read more
The Bus Pirate v4 Acrylic case kit v1 is back in stock at Seeed Studio. This fits the earlier Bus Pirate v4 models which comes in the non-Sick of Beige PCBs. You can get one for $3 at Seeed Studio.
Adam Wrobel and Michael Grisanti of Cornell University built this device that tracks sound impluses: The core of our system is hardware based analog circuit, which filters, amplifies, and processes the sounds obtained from the microphones. By utilizing hardware for this, … Read more
Hacker Camp Shenzhen volume 3: “Reflow” is on! Join us from Thursday December 4 to Saturday December 6, 2014 for fun, food and 3 solid days of market tours in Shenzhen China and beyond. Tickets are available now. Come to … Read more
Antscran over at the 430h forum posted a how-to on using an Android phone and voice commands to control a MSP430G2553: In this tutorial I will demonstrate a MSP430 voice control over Bluetooth, using a HC06 Bluetooth module. I will … Read more
Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters. Don’t forget there’s free PCBs three times a … Read more
Kerry Wong writes: For the build, I followed LT’s reference design detailed in the datasheet. For the output filtering, I used a 2.2K/10pF output RC filter to limit the output bandwidth to around 3 MHz. Since we are in the … Read more
Dilshan Jayakody writes: This article introduces high quality digitally controlled 2.1 channel analog audio power amplifier system. This project is mainly based on TDA7377 AF power amplifier and PIC18F452 8bit microcontroller. Basic features of this receiver are 2 × 6W … Read more
Victor8o5 posted detailed instructions of how to make this high voltage power supply. He writes: WARNING: Before you start making anything please take a moment and read this: This circuit is intended to be used for educational and experimental purposes (electrostatic … Read more
sparkybg writes, “HAKKO T12, JBC C210, JBC Microtweezer on my latest universal soldering controller” Via the project log forum.