The second type of optical sensor, here’s Vishay app note on how do they operate and their considerations when using one of these on your projects. These sensors integrate an infrared emitter and photo detector in a single package. The most common types of optical sensors are transmissive and reflective sensors. Both types detect the […]
Author Archives: DP
App note: Application of optical sensors – Transmissive
Optical sensor basics and its considering factors of these type of contactless switches, learn more from Vishay’s app note on transmissive optical sensor. These sensors integrate an infrared emitter and photo detector in a single package. The most common types of optical sensors are transmissive and reflective sensors. Both types detect the presence of an […]
Microchip TQFP-100 breakout board PCB build
Samual posted picture of his Microchip TQFP-100 breakout board PCB build in the forum.
Sick of Beige basic case v1 (DP6037) back in stock
Sick Of Beige basic case v1 (DP6037) is back in stock at Seeed Studio. A clear laser-cut acrylic project case kit that fits DP6037 PCBs (60mmx37mm). Sick of Beige v1 DP6037 project case is available at Seeed for $3.
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 December 06, 2013
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. Bus Pirate Demo board free PCB build Sick of Beige basic case v1 (DP5031) and Sick of Beige basic case v1 (DP6037) are back in stock Check out Tom’s relay control board on DP5031 PCB in the project log forum Coming […]
Telepresence robot using Microchip PIC16F1829 and Atmel AVR ATmega168 I2C smart DC motor controller microcontroller – Part 2
Ronald of ermicroblog writes: The I2C (read as I square C) smart DC motor controller is designed using the Atmel 8-bit AVR Atmega168 microcontroller and configured to act as the I2C slave device where it could be controlled by other microcontroller or microprocessor through the I2C SDA (serial data) and SCL (serial clock) interface. In the first […]
Sick of Beige basic case v1 (DP5031) back in stock
Sick Of Beige basic case v1 (DP5031) is back in stock at Seeed Studio. A clear laser-cut acrylic project case kit that fits DP5031 PCBs (50mmx31mm) Sick of Beige v1 DP5031 project case is available at Seeed for $3.
DIY custom LCD
This video by Ben Krasnow discusses how to make your own custom LCD.
Ultrasonic range finder with haptic feedback called The Bat Hat
An ultrasonic range-finder with haptic feedback called The Bat Hat by Jeff Buswell, Clifford Chou and Andrew Knauss from Cornell University, built as a final project: For our ECE 4760 final project, we designed and implemented an ultrasonic range-finding hat that uses haptic feedback to alert its wearer about obstacles in his or her path. The hat is […]
A digitally controlled dual tracking power supply — II
Kerry D. Wong writes: In my previous post, I showed my design of a dual tracking ±30V linear power supply. My goal was to use the transformer (28V+28V, center tapped) from an old Deltron W127G open-frame power supply and build a lab supply that can be digitally adjusted in both constant voltage and constant current […]
Turnigy 9X review – 9 Channel RC transmitter
Oscar Liang did a review of the Turnigy 9X RC transmitter: The Turnigy 9X is one of the best RC transmitters out there at the moment for it’s price. For $60, you’ll get a 9 channel transmitter (8 usable), a receiver and a bind plug, but with no battery. I have been using this transmitter for over […]
GIVEAWAY: The Whistled, a sound controlled relay
Mathieu Stephan over at Limpkin wants to giveaway three whistled platforms (assembled PCB). The whistled allows you to control one device by simply whistling two musical notes. He’ll give these away to 3 random commenters, just leave a comment on this post. For more information visit the project’s site -Limpkin. It’s also up on Tindie.
An AVR Atmega based PID magnetic levitator
In this video Davide Gironi demonstrates his AVR Atmega based magnetic levitator: This is a magnetic levitator implemented using Atmega8 microcontroller. Magnetic levitation is a method by which an object is suspended with no support other than magnetic fields.
SLENDUINO development board based on PIC12F683
Here’s a SLENDUINO development board based on PIC12F683 by C/D: The idea of this project was born from the necessity of create projects focused to mobile; therefore PIC12F683-I/SN was almost immediately our first choice for the features of this microcontroller. Files available on Github.
#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 […]
TI Ez430 Chronos watch – Getting started on custom firmwares
TI Ez430 Chronos watch – Getting started on custom firmwares: Elpaso, from the 43oh Forums has written a nice tutorial on how to get started on the Ez430 Chronos watch with what is out there currently. He covers the watch, the control center, wireless updates and custom firmwares. Via 43oh.
Relay control board on DP5031 PCB
Tom writes: Here’s a breakout board for those Songle SRD series relays that are so cheap on Ebay. It fits nicely on the Dangerous Prototypes standard PCB size DP5031. Electromechanical relays are generally employ small signals to switch much higher voltages and currents. As a result, a nice big gap is required to insulate between […]
Bus Pirate Demo board free PCB build
David tweeted picture of his Bus Pirate Demo board v5c free PCB build: 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.
YALEDD! 16×16 LED display
Andrew Rossignol has written an article detailing his YALEDD – 16×16 LED display project: The class was instructed to choose a simple circuit such as an LED flasher or a simple sequential state machine composed of discrete logic, capture the schematic, layout the PCB and have it made by the end of the term. I decided that […]