krishi shows how-to use the Arduino as an HID MIDI device. Via the contact form.
Author Archives: Ian
Tektronix oscilloscope contest videos
Tektronix, the oscilloscope manufacturer, is having a video contest. There are a bunch of different projects, including an entry from the popular EEVblog. Vote for your favorite o-scope hacks here. Thanks Charlie! Via the contact form.
International Traffic in Arms Regulations for hackers
NBitWonder writes: I was exploring building a project the other day, when I came up with some questions about the legal basis for doing so. With that in mind I did some research, and wrote up a legal tutorial for US makers on International Traffic in Arms Regulations (ITAR). The tutorial is supposed to give […]
Arduino Dynamic DNS updater
Boris shared his Arduino DDNS (Dynamic DNS): …This device captures the IP address of your network and it publish on site DynDNS.com. All without PC. It allow a remote access to your LAN even if the IP address of the connections changes. If you don’t want to use the software provided by DynDNS, and then […]
NEW PROTOTYPE: Bus Blaster v2
It’s finally here! The Bus Blaster v2 JTAG debugger is now in stock and shipping at Seeed Studio. Read the full hardware design article There’s a ton of JTAG debuggers out there, what makes the Bus Blaster v2 so special? V2 has a reprogrammable logic chip (CPLD) that sits between the FT2232H USB chip and […]
Stellaris LM3S8971 development board
PowerUserEx designed a Stellaris LM3S8971 development board. Eagle files are available. Via the forum.
STATUS UPDATE: PIC LCD backpack
We’re trying a new Monday post with status updates on new projects currently in production. This will cover project development, and gritty details like last minutes changes and production problems. This is a USB and serial backpack for simple HD44780 character LCD screens. It has a few nice features that set it apart from the […]
DSO nano signal generator repair
Georg blew out the signal generator on his DSO nano portable oscilloscope. He brought it back to life with a new buffer chip, his repair guide might save your nano too: Spotting the chip on the board is very easy. It’s in an SMD package but fortunately a rather large type. So, although I have […]
Bosch Sensortec BMP085 pressure sensor tests
In a comment on our STMicroelectronics MEMS pressure sensor post, jbeale offers his tests of the Bosch Sensortec BMP085 pressure sensor: The Bosch Sensortec BMP085 is slightly larger (5×5 mm) and has been out for some time. In its highest sensitivity mode it offers 0.01 hPa resolution and 0.03 hPa noise level. (Note: 1 millibar […]
NXP Cortex-MO marketing fail
A few weeks ago NXP sent us a survey and offered a free LPCXpresso board for completing it. We filled out the survey and expected a dev-board or breakout board, and a CD with datasheets, compilers, etc. Something like the STM8/32, MSP430 LaunchPad, and other simple boards other manufacturers have been giving away. Today we […]
Free PCB Sunday: Logic Shrimp logic analyzer
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 we’re giving away two […]
App note: DC voltage controls PWM dimming of high-brightness LEDs
An app note on a LED-driver circuit: This LED-driver circuit includes a hysteretic controller U1 (MAX16820), related power components, and a control circuit based on the quad op amp U2 (LMX324). U1 drives five HB LEDs from a 24V source, using only inductor L1, MOSFET Q1, and catch diode D1. Thanks rsdio!
LM0901a1411090451C polis operational amplifier
Akos tips us to the LM0901a1411090451C polis operational amplifier: The LM0901A1141090451C is a macropower, low performance, degraded circuit operational amplifier designed to have a no load power dissipation of less than 0.553W at Vs = ±1pV and less than 200W at Vs = ±2pV. Open loop gain is greater than 0.001k and input bias current […]
14bit 125MSPS low-power ADC
MichaelZ tipped us to the ADS9412x a 14-/12-Bit, 65/125MSPS, ultralow-power analog to digital converter: • Ultralow Power with 1.8V Single Supply: – 103mW Total Power at 65MSPS – 153mW Total Power at 125MSPS • Programmable Gain up to 6dB for SNR/SFDR Trade-Off • DC Offset Correction • Differential input voltage range 2 VPP Thanks McZ!
USB IR Toy v1 back in stock, again
The USB IR Toy is back in stock at Seeed Studio again. Seeed is working really hard to update and stock the last batch of IR Toy v1. A few more trickled in today. This batch has a background story. We were arranging v2, which is still over a month away and will be a […]
An ad in 2600:The Hacker Quarterly
Special thanks to the machinegeek for arranging our first ad in the infamous 2600: The Hacker Quarterly. This ad is in the issue that hits newsstands tomorrow. We’re in great company. Notice the TV-B-Gone ad in the lower right.
Week in (p)review: April 08, 2011
Don’t forget to share your current project in the comments or the forum. Everyone who posts a project log this week gets a free PCB! Here’s a summary of major developments over the last week: Logic Shrimp logic analyzer was released flubberlab is diagramming the advanced triggers in the new Logic Sniffer Demon core in […]
Logic Sniffer 16-bit input buffer
Logic Sniffer 16-bit input buffer is back in stock at Seeed Studio. The Open Logic Sniffer buffer wing in stock and shipping now for $15.
Tutorials for KiCad
KiCad is an open source PCB layout program. It’s not as well loved as Eagle, but there’s no restrictions on board size. Curiousinventor’s KiCad tutorial covers many of the common issues new users will encounter. Thanks Kelvin! Via the tips line.
DIY MSP430 3p4w clock
simpleavr shared the 3p4w clock, another MSP430 alarm clock: this is a simple clock project based on ti MSP430G2231. this comes included in the $4.30 TI Launchpad package. the project objective is to create a working clock with minimal components. Via the project log forum.