hms made a simple recycled Bus Pirate case from a mint candy container: Bus pirate v3.6 “sweet case”. Just have to drill some holes for the connectors. Via Twitter.
Author Archives: DP
Nomech mini, a 4×4 capacitive touch button grid
Kasbah posted an update on his Nomech mini project we covered we previously: So after some wrangling with the code I got the charging and discharging of the sampling capacitor working. CH1 is the slope pin which is used for discharging the sample capacitor (and then measuring the time it takes to discharge ). These […]
App note: BLDC control with Hall effect sensors.
Here is an application note from Atmel based on sensor driven BLDC control implemented on AVR microcontrollers. This application note describes the control of a BLDC motor with Hall effect position sensors. The implementation includes both direction and open loop speed control.
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: Data encryption routines for PIC24 and dsPIC devices
Here’s an app note from Microchip describing how to implement data encryption routines on PIC24 and dsPIC microcontrollers and digital signal processors. This application note discusses the implementation of two of these for PIC24 and dsPIC devices: Triple Data Encryption Standard (TDES) and Advanced Encryption Standard (AES). Source code for this application note is available […]
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.
Interleaving ADC’s to increase sampling bandwidth
Drone writes: Here are a series of short but informative posts by Jonathan Harris of ADI about interleaving ADC’s to increase sampling bandwidth: Interleaved ADCs: The Basics More Thoughts on Interleaved ADCs Interleaving Spurs: Offset Mismatches Via the contact form.
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 July 12, 2013
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. 0.65mm pitch xQFP breakout boards and Bus Pirate v3.6 Sick of Beige v1 acrylic case v1, and USB IR Toy v2 are back in stock Check out Stuff4Pi’s ConvertPi, Asgard’s update on his power charger and supply regulator project, Mats’ PAW project the Hello-ot […]
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 […]
GPS clock prototyping, part I
Kevin Rye has been working on his GPS clock project and wrote a detailed explanation on his blog describing the build: The great thing about setting the time and date via GPS is that I won’t have to put any buttons on the clock. It’ll set itself, and appear to be completely autonomous. By removing the buttons […]
OpenReflex, the open source 3D Printed Camera
Bozardeux wrote this Instructable detailing his OpenReflex, the open source 3D Printed Camera: The OpenReflex is an Open-Source analog camera with a mirror viewfinder and an awesome finger activated mechanic shutter (running ~ 1/60°s). What’s more, it is compatible with any photographic lens. All the pieces are easily printable on any recent RepRap-like ABS 3D-printer […]
Wireless power and charging test and some reverse engineering
Dimitar Kolev writes: I test both, just with one LED for now (like 15mA) – they was working quite OK for distances up to 1-2cm, just some paper and thin air between TX and RX coils. With appropriate ferite it seems distance and coupling can be even better. Just to fire further my interest, chip […]
Dot-Matrix MSP430 alarm clock
Markus Gritsch shows off his Dot-Matrix MSP430 alarm clock. Via the project log forum.
Talking Electronics Frequency Counter
John Boxall over at Tronixstuff has a detailed review of Talking Electronics’ Frequency Counter: The counter works by using a multi-vibrator using a CD4047 to generate a square-wave at 50, 500 and 5 kHz, and the three trimpots are adjusted to calibrate the output. The incoming pulses to measure are fed to the 4026 decade counter/divider ICs. Three of […]
Autonomous printing with your RepRap
Autonomous printing with your RepRap: One of the main characteristics of 3D printers is their printing slowness: even if of 3Drag mechanic parts are able to exceed the speed of 100 mm per second in printing, an object still requires tens of minutes if not hours to be completed. In fact, as you have a […]
TL-WR702N as Arduino shield
Dirk has written an article detailing how to make a simple Arduino wireless shield using the TL-WR702N wifi router: There’s always the need for cheaper Arduino equipment and there’s always the need for wireless activities in your project. But an Arduino wireless shield costs much. Everyone of us has got an ethernet shield. They are […]
PCB a Week 15: Twittorama
Mats continues his challenge of designing one PCB every week. In week 15 he came up with 14 segment display- Twittorama: Displaying tweets isn’t anything new, but most I’ve seen have a small display and scrolls the tweets. I want the full 140 characters to be visible simultaneously. So I put 10 of the displays (20 […]
Minimal ECG using an Arduino and Xoscillo
Raul from Coding Laboratory has designed a DIY ECG project using an Arduino and Xoscillo: To display the wave I am using XOSCILLO, a very cool and open source tool (which I wrote :P) that converts your Arduino into an oscilloscope.
#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 […]