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 […]
Author Archives: DP
Bus Pirate: Custom UART baud rates
Emil of Unwind.se wrote an article on how to use custom UART baudrates on a Bus Pirate: I made Bus Pirate-baud rate to help when setting custom UART baud rates on the #buspirate. Easier than binary downloads. Via Twitter. Get an assembled Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.
Apple lightning connector hacked
A teardown of the lightning connector by Ramtin Amin. Via Hacked Gadgets. Check out the video after the break.
App note: Demodulating communication signals of Qi-compliant low-power wireless charger using MC56F8006 DSC
Demodulating the Qi standard wireless power charger app note(PDF) using MC56F8006 digital signal controller from Freescale Semiconductor. Wireless power is becoming more and more popular today, through which a number of electronic items like mobiles, laptops, media players, can be charged without cords or wires. It is beginning to show great potential in the consumer […]
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: Low-power wireless charger transmitter design using MC56F8006 digital signal controller
An app note(PDF) from Freescale Semiconductor on 5-16V, free positioning multiple primary coils “Qi” compatible wireless power transmitter. Wireless power transmission system transfers electrical power from transmitter to receiver without any wire connection. Due to safety, freedom, reliable, convenient and long life, wireless charging is popular, and widely used in everything such as toothbrushes, LED […]
App note: Building a battery operated auto ranging DVM with the ICL7106
Intersil’s application note (PDF!) on building a battery operated auto ranging DVM with the ICL7106: This application note describes a technique for auto-ranging a battery operated DVM suitable for panel meter applications. Also, circuit ideas will be presented for conductance and resistance measurement, 9V battery and 5V supply operations, and current measurement.
App note: Infrared gesture sensing
An application note from Silicon Labs on Infrared gesture sensing (PDF!): Touchless user interfaces are an emerging trend in embedded electronics as product designers seek out innovative control methods and more intuitive ways for users to interact with electronics. Active infrared proximity motion sensing can solve this challenge. Silicon Labs Si114x proximity and ambient light sensor products […]
Stand-alone inductance meter update
An update on Lukas’ stand-alone inductance meter project we covered previously: From a high-level point of view the new software is very similar to the Arduino sketch I wrote for the Inductance Meter Shield. If you look a bit closer, you’ll notice some differences for several reasons: This project uses an entirely different microcontroller: A PIC 16F1932 instead of […]
Seeed Studio: Free shipping on this CNY holiday!
Free shipping on this CNY holiday at Seeed Studio: This is a notification that let you know we are going to Chinese New Year holiday soon. Yeah….Happy Chinese New Year! The holiday start on : 2/14/2015 ~ 2/25/2015 (UTC+8) 24/7 Online Store, if you place an order(Fusion service included) during the holidays, you can enjoy: 1) […]
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. The coupon code usually go to Facebook ‘Other’ Messages Folder . More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every […]
DirtyPCB Pico-Kubik quadruped robot
Pico-Kubik, the tinniest quadruped robot with Micropython on board by Radomir Dopieralski: This is the fourth quadruped that I’m building, after Kubik, µKubik, and Nano-Kubik. This one literally fits in the palm of your hand (you can see it next to a LEGO brick on the photo). It’s going to run on Micropython on a VoCore […]
PrintSnap instant camera
Ch00f wrote a post on his blog detailing his PrintSnap instant camera assembly: So the task was to produce a portable camera that can print images instantly using an optical module and a thermal printer. Of course, processing a decent image quickly requires far more processing power than what’s available in an 8-bit AVR, so […]
Avoccado° Nora, batch of PCB from DirtyPCBs
Natalie Kane writes: Nora is the most recent approach to cram up everything of the recent prototypes but use only 2 layers and populate all of the components on one side. Nora is the smallest board with a LiPo charger yet, measuring just 23.5 mm x 23.5 mm. Nora is the first version having the […]
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.
Designing and building a 2m low pass filter
Kenneth made a 2m low pass filter and wrote a post on his blog detailing its assembly: I’ve been playing with the DRA818V modules that have been making quite a stir in the amateur radio world at the moment. I haven’t gotten one on a spectrum analyzer yet, but I have reason to believe that it will […]
WiFi LED Light (ESP8266 + WS2812B + Lua)
Markus Gritsch shared his WiFi LED light project in the forum: I built a prototype for a WiFi controllable LED light, using the popular ESP8266 module running the NodeMCU firmware [1]. To allow controlling the WS2812B LEDs from Lua, I extended the firmware with a bit of C code Check out the video after the break.
Review and teardown of the Analog arts SL987 USB oscilloscope AWG pattern generator and Logic analyzer
Review and teardown of the Analog arts SL987 USB oscilloscope AWG pattern generator and logic analyzer by Shahriar of TheSignalPath: In this episode Shahriar takes a close look at the Analog Arts USB based mixed-domain instrument. The SL987 offers an oscilloscope, arbitrary waveform generator, FFT-based spectrum analyzer, pattern generator and logic analyzer in a compact form factor. […]
SL414 Vintage power amplifier IC
Dilshan Jayakody writes: SL414 is combined audio preamplifier and power amplifier IC manufactured by National semiconductors in early days. This amplifier is designed to operate in 10V to 20V range and deliver 3W (R.M.S) audio output power into 7.5Ω load. The frequency bandwidth of this IC is between 30Hz to 18kHz and with 8Ω load […]
Extracting firmware via JTAG never gets old
@joegrand tweeted, “Extracting firmware via JTAG never gets old. Thanks @dangerousproto and UrJTAG! ”