Frank over at RaspberryAlphaOmega writes: After thinking about how to drive the MAX7219 LED array I built yesterday, it occurred to me that maybe this is an ideal time to get to the bottom of how to use the Bus Pirate board that I failed to use with a MCP3002 ADC chip. This time I was […]
Author Archives: DP
Executive Decision Maker Pro
Bertho shared his Executive Decision Maker Pro in the project log forum: Making decisions is a hard thing to do, so it seems to most of us. The creation of the original Executive Decision Maker has really relieved me of the most of the heavy duty mind-gymnastics and enabled exceptionally good results at incredible speed. It […]
Build an Arduino shield for Quadcopter – Arduino adapter
Oscar built his own Arduino shield for Quadcopter: I have been searching for ideas of making a Quadcopter Arduino flight controller Adapter to sit my Arduino nano board and the GY80, also have some header pins for motors and receiver to make the cabling tidy. There are a lot of Arduino shields people have designed for […]
USB Infrared Toy v2 back in stock
USB Infrared Toy v2 is back in stock at Seeed Studio. You can use it as a remote control with your computer, view infrared signals on a logic analyzer, capture and replay remote control buttons. You can get IR Toy v2 for $22.05, including world wide shipping.
Automated irrigation system using MSP430 and relay board
arduinoversusevil has posted details on automating irrigation system with the MSP430: It took about 3 hours to get most of the water out. Standing next to a noisy compressor, chooching a lever back and forth is no fun. This year, I got smrt. I dug through my junk bins and found a metric shit ton of timer […]
uCAN: A protocol stack for microcontroller networking
Nick Johnson over at Arachnid Labs writes: I’m working on an idea that I’ve been pondering over for a while: a simple, low cost option for networking low power microcontrollers for hobbyist projects, art installations, interactive exhibits, hackspaces, etc etc. There are a few options around, but nobody’s specified something to build an ecosystem around; radio […]
#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 […]
Open Source Nixie clock project
ezflyr shared us his Nixie clock in the project log forum: For anyone that’s interested, here is a picture of my Nixie Clock prototype! I had the hardwood base made out of Maple by a local cabinet shop for $30, and the Acrylic cover was sourced from a company that specializes in display cases for about $15. […]
Fan Controller free PCB build
Sandman333 built a free Fan Controller PCB. If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll send you a coupon code for the free PCB drawer.
NoLoop galvanic isolator
Bertho shared his NoLoop galvanic isolator in the project log forum: I had a problem some time ago with a nasty ground-loop and that cost me the USB port on my old laptop. It took me a while to realize what had happened and it was a generic problem we all run into more often than […]
Free PCB Sunday: Pick your PCB
We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service. This week two random commenters will […]
App note: Hardware security ICs offer large security returns at a low cost
An application note from Maxim: Hardware security ICs offer large security returns at a low cost In the face of security vulnerabilities in health and safety applications, governments and industry leaders have focused on security weaknesses in the design and protection of electronic devices. This article explains how using hardware security ICs dramatically reduces the risk […]
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 […]
OpenMV camera module
mux blogged about his open source camera project: This a quick update on my camera project (OpenMV)… I’ve finally received the long overdue PCBs today and assembled one. I haven’t written any code yet, but I’ve managed to get it into DFU mode and upload a blinky, it seems to be working fine so far, no […]
Control your Xbox 360 RF Module with an Attiny45
tin0 wrote a post on how to control your Xbox 360 RF Module with an Attiny45, we wrote about it previously: Buying an Arduino or an Raspberry Pi for using your freshly harvested Xbox 360 RF Module is somewhat pricy and overscaled for this job. There are very cheap Microcontrollers out there which can communicate with ~130 […]
DIY BatBox project
Bill Porter has written an article detailing the build of his BatBox project: I had some high energy density batteries lying around and a recent string of power outages have been leaving me in the dark more often than I care for. So in true hacker fashion, I built something: BatBox, just like in Minecraft. My real life version […]
NEC Protocol Infrared remote control with a microcontroller
Gaurav Chaudhary writes: This little project will demonstrate how you can build NEC protocol based Infrared Remote Control to use with various NEC Protocol IR receivers. actually there are lots of projects out there to accomplish this task but i have to write my own code because of too many requests on this IR(infrared) Remote […]
A simple brushless sensorless motor driver for AVR Atmega
Davide Gironi posted the brushless sensorless version of his sensored motor driver for AVR Atmega we posted previously: For this project, I’ve implemented a simple brushless sensoreless motor driver for AVR Atmega. The code i propose it’s not perfect, and can be improved, but for the needs i had it works. The motor can be controlled in speed […]
An isolated DAC using PWM output
Kerry Wong writes: Arduino‘s (ATmega328P) PWM outputs via analogWrite can be conveniently turned into analog voltage levels through the use of simple RC filters. Since the PWM outputs are not isolated, using them to drive other devices directly could be potentially dangerous. This is especially true if the target circuit uses a higher supply voltage. […]
Bluetooth shield for Arduino
Boris Landoni from Open Electronics writes about a new open source bluetooth shield for Arduino: Here’s an application to control the brightness of an RGB LED strip wirelessly (via Bluetooth) using a smartphone. The whole project is presented in a dedicated Bluetooth shield for Arduino and a RGB shield.