Tom posted an update on his Magic Mote wireless sensor we covered previously: Here is Version 2 of the Magic Mote PCB. The tactile switch is more accessible at the side of the board, the programming/serial header is now IDC6 compatible, and there is improved isolation of the ground plane under the watch crystal.
Author Archives: DP
GTP USB lite SMD board
Here’s a PIC programer SMD board for the GTP USB lite pic programmer by cmardone: I created a pic programer smd board for the gtp usb lite pic programmer. Was made using EagleCADSOFT 5.0 2 layer board 0603 footprint for most smd components !! uses a 18F2550 SMD chip from microchip has a mini-A USB connector schematic […]
Yet another BeagleBone proto cape
piranha32 writes: After seeing t0mpr1c3’s proto cape, I thought it would be worth to share my cape prototyping board, designed a while ago for BB White. It has space for EEPROM chip, so it can be used also for testing prototypes of capes which will later will go into production. To make life easier, the […]
Building a breakout board for a TI TMP708
Carl from Hackshed.co.uk writes: Steve recently ordered several Texas Instruments TMP708 temperature switches. What he failed to realise however, is that the chips come in an SOT package which is tiny. After laughing at him for quite a while, I offered to build him a breakout board for the chips. Here are the steps I took […]
Bus Pirate v3.6 Sick of Beige v1 acrylic case v1 back in stock
Bus Pirate v3.6 Sick of Beige acrylic case v1 is back in stock at Seeed Studio. Version 1 of the basic case is simple, cheap, easy to assemble, and fits our Sick of Beige standard PCB sizes. Check out our tutorial on how to customize Sick of Beige cases. Get Bus Pirate v3.6 acrylic case […]
#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 […]
LED ring based illumination for American optical microscopes
TomKeddie writes: Based on a recommendation in these forums I bought an American Optical 570 stereo microscope on ebay some time back. I added the illumination shown below, I thought it might be useful to others. I cut 3 pieces from a right angle piece of aluminium section, coated them in heatshrink, attached them to […]
Proto Cape for BeagleBone
Tom shared his prototyping cape for the BeagleBone/Black in the project log forum: I spun a prototyping cape for the BeagleBone/Black. The design is derived from the LGX Proto Cape created by Alexander Hiam for LGX / Logic Supply and released under Creative Commons Attribution 3.0 Unported License. I removed the SMD component footprints, which seemed […]
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.
MCU controlled spot welder
Hercules Trapierakis over at Electronics-Lab writes: “This project is a controller for a dual pulse spot welder that has some nice features that are controlled using a LCD interface.” I always wanted a spot welder, so I decided to built one. I wanted to build a capacitance discharge one but I couldnt afford for the capacitors […]
Unbricking a TP-Link TL-WA801ND v2
TasksOfOhm has posted a tutorial on how to unbrick TP-Link TL-WA801ND v2: Experimenting with embedded devices is fun but things not always work as expected. Sometimes you just flash the wrong firmware. So did I. After having done so I furthermore realized that the bootloader in my TL-WA801ND v2.1 was the current one and therefore contains a […]
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: Interfacing FT2232H hi-speed devices to SPI bus
Simplify USB to SPI connectivity by using this app note from FTDI. The FT2232H and FT4232H are the FTDI’s first USB 2.0 Hi-Speed (480Mbits/s) USB to UART/FIFO ICs. They also have the capability of being configured in a variety of serial interfaces using the internal MPSSE (Multi-Protocol Synchronous Serial Engine). This application note introduces the […]
App note: Interfacing FT2232H hi-speed devices to I2C bus
Simplify USB to I2C connectivity by using this app note from FTDI. The FT2232H and FT4232H are the FTDI’s first USB 2.0 Hi-Speed (480Mbits/s) USB to UART/FIFO ICs. They also have the capability of being configured in a variety of serial interfaces using the internal MPSSE (Multi-Protocol Synchronous Serial Engine). This application note illustrates how […]
App note: A complete low-cost design and analysis for single and multi-phase AC induction motors using an 8-Bit PIC16 microcontroller
Here’s an application note (PDF!) from Microchip on driving a single and multi-phase AC induction motor (ACIM) using the PIC16F1509 microcontroller: This document provides a detailed analysis of driving a single and multi-phase AC induction motor (ACIM) using the PIC16F1509 microcontroller. Laboratory data is presented alongside the simulated data in an extensive reasoning of the entire design. The purpose […]
Single-lever and ultimatic adapter
Sverre Holm writes: Here’s an adapter that emulates both a single-lever paddle mode and the ultimatic mode. It is meant to go between a dual-lever paddle and an iambic keyer. The adapter has been implemented in an AVR Butterfly in C and it is compatible with Morse keyers such as the one in the Elecraft […]
Single chip provides 3D images inside the heart and blood vessels
Researchers at the Georgia Institute of Technology have developed a new medical imaging technology that provides 3D imaging from inside the heart and blood vessels: The device integrates ultrasound transducers with processing electronics on a single 1.4 millimeter silicon chip. On-chip processing of signals allows data from more than a hundred elements on the device to be […]
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 February 21, 2014
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. Hacker Camp Shenzhen 2014 registration Bus Pirate v4 Acrylic case kit v1 back in stock Turning your Flash Destroyer into a clock Check out joeforker’s ATtiny LED driver for an RC car and phalox’ own version of 1D pong […]
Inductive loop vehicle detector v2.1
Trax of Elektronika.ba has written an article detailing his inductive loop detector that uses PIC microcontroller and Colpitts oscillator with a large coil buried in pavement to detect vehicles: Inductive Loop Detector works by detecting an inductance change in wire loop (coil) that is buried in road. It does that by measuring the frequency of the internal […]