The Logic Sniffer is back in stock at Seeed Studio. The Open Bench Logic Sniffer is an open source logic analyzer. It’s designed to support the SUMP logic analyzer software at the lowest possible cost. Get a Logic Sniffer for $50, with free worldwide shipping.
Author Archives: DP
Bitx20 V3 “Dead bug style” new bandpass filter
A Bitx20 band pass filter from Pa1ed: the bandwith of my bandpass filter in the Bitx 20 was very small.Only 100KHz or so.I found this filter on the internet,and after I,ve build the filter I found out that this was the filter used in the Bitx20A from Hendricks QRP kits.Because I wanted to use the […]
BlinkyTile: Build your own dynamic light sculptures
Matt Mets, our hacker friend, has announced that the BlinkyTile is now being offered on Kickstarter! He writes, “BlinkyTile is a system of LED lights on pentagonal tiles for creating dynamic light sculptures in any shape you can imagine!”
Measure brightness in Lux using BH1750 sensor on Spark core
Davide Gironi writes: A Spark.io library for the BH1750FVI IC. The BH1750 IC is a light intensity sensor module with built-in a 16 bit AD converter generating digital signal. With the BH1750 Light Sensor intensity can be directly measured by the luxmeter, without needing to make calculations. This library provides function to measure lux through […]
Vodka vending machine
Ben Armstrong made this cool Vodka vending machine project: Designed to dispense alcoholic beverages in night clubs this project was design and built by myself and another team mate. Arduino hardware was used to program the device which include a stepper motor, an infra red sensor, two solenoid valves, an LCD screen, buttons and a […]
PiGateway upgraded to MightyBoost
Felix of LowPowerLab writes: Enter MightyBoost – a multi purpose PSU that can supply the power a Pi needs, and also be controllable by a Moteino (including wirelessly controllable if needed) such that it would duplicate the functionality of ATXRaspi. And most importantly to be able to run it on battery backup in case power […]
#FreePCB via Twitter to 2 random RTs
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 every week: Hate Twitter and Facebook? Free PCB Sunday is the classic PCB giveaway. Catch […]
DIY small bench power supply
newtonn2 posted detailed instructions of how to make this DIY small bench power supply that can adjust with precision current or voltage: After making my Mini Adjustable Power Supply I was very happy with it, but I was missing a more accurate control of the voltage and current. So I decided to make this slightly […]
Frequency counter with PIC16F628A
xristost blogged about the frequency counter module he made: First of all, I wanted a PIC microcontroller to do the whole job without any additional ICs. Also, I wanted to use the familiar 16F628A, but because one of the portA pins (RA5) can be used only as input, I was short of outputs to do the job. […]
APA102 aka “Superled”
cpldcpu writes: I contrast to the very timing-sensitive one-wire protocol of the WS2812, the APA102 uses a standard two wire SPI protocol – one clock line and one data line. Each LED has two inputs and two outputs which can be daisy chained. At the first sight this may seem wasteful, but it has the […]
Motor controllers for cheap robots
An instructables on motor controllers for cheap robots by JayWeeks Almost every robot needs to power a motor of some sort or another. Problem is that motors take quite a lot of power, compared to what most microcontrollers operate with. To solve this problem, robots use what is called a motor controller, which usually amounts […]
DIY RFID card lock system
Shawn McCombs blogged about his DIY Arduino RFID card door lock system 100 cards build. Via Hacked Gadgets. Check out the video after the break.
Kicad converter for TM-240A Pick-and-Place machines
Kicad converter for TM-240A Pick-and-Place machines by Wayne and Layne: The Pick-and-Place machine needs to know where to place each part, and we have created some software to help convert the PCB design data from our favorite ECAD tool, KiCad, into the proper file format needed for these PnP machines. The documentation for this software is […]
On Arduino due PWM frequency
Kerry D. Wong writes: I just got myself a couple of Arduino Due boards. While they were released almost two years ago, I have not really got a chance to look at these until quite recently. Arduino Due is based on Atmel’s ATSAM3x8E 32-bit ARM Cortext-M3 processor. The processor core runs at 84 MHz, which […]
App note: Free-fall sensing for drop-force modeling using a Kionix MEMS tri-axis accelerometer
Here’s another app note (PDF) from Kionix on their tri-axis accelerometer applications. An earlier set-up was used in the application note’s experiment. This application note describes how to use a Kionix MEMS tri-axis accelerometer as a free-fall sensor for drop force modeling applications. Required theory, equations, and sample event signatures are provided with this note […]
App note: Interfacing the KXP94 or KXR94 tri-axis accelerometer with the Texas Instruments MSP430F149 microprocessor to measure tilt and other motions
Capture motions with Kionix’ Tri-Axis Accelerometers and a TI’s MSP430F149. App note here (PDF) Kionix linear accelerometers function on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. A signal-conditioning CMOS technology ASIC detects and transforms changes in capacitance into an analog output voltage which is […]
Cylon.js, a JavaScript robotics framework using Node.js
Team Cylon.js has just released full support for the Intel Edison in Cylon.js their open source robotics & IoT framework: Cylon.js is a JavaScript framework for robotics and physical computing built on top of Node.js. It provides a simple, but powerful way to create solutions that incorporate multiple, different hardware devices concurrently. You can find more […]
Wireless LED driver with PCA9634
Ondřej Karas of DoItWireless writes, “If You are interested in LED driving through RF, this article would be interesting for you. I tested own PCA9634 breakout board for this chip and wrote simple low level driver for IQRF TR-52D module. Next week, I am going to publish PC application for comfortable operation with that.”
Free PCB coupon via Facebook to 2 random commenters
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 there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get […]
Week in (p)review September 19, 2014
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. ATX Breakout Board bench-top power supply build DIY cases for his Bus Pirate v3.6 and Bus Blaster Check out Scasagrande’s gamecube controller to N64 adapter in the project log forum Coming up: Free PCBs via Facebook on Friday App […]