Rescue your bricked AVR micro with the Rescue Shield, now back in stock!

Rescue Shield kits are (finally!) back in stock.

AVR HV Rescue Shield

The Rescue Shield is a 100% open source, Arduino-based high voltage mode fuse programmer for AVR microcontrollers.

It allows you bring  an otherwise “bricked” or misconfigured AVR back to life by editing the configuration fuses that control the operation of the RESET pin, the internal oscillator, and other features of the microcontroller. The Rescue Shield can talk to chips when ordinary ISP programmers can’t.

Follow this link to learn more and place an order.

Design and Construction of a 24 GHz Low Noise Amplifier

24GHz Low Noise Amplifier

 

Tony Long and I designed and built a 24 GHz low noise amplifier for our ECE192 undergraduate independent study project at UCSD.

The amplifier was designed with an early version of Agilent ADS, PCBs were fabricated on Rogers 5880 (Duroid), and we hand built several prototypes on K-connector fixtures that Tony designed. Measured results were consistent with our simulations.

Closeup of two stage LNA PCB

Tony and I won an award for this project at the Eureka! undergraduate research conference in June 2000.

I heard recently that this project is being used as an example of a good EE senior design project at other universities, so I dug up an original copy of the paper we submitted and posted a PDF here.

Upcoming events: OHS, TAPR DCC, NYMF

OSHW summit goodie bag
photo credit: adafruit

There are three major events of interest to open source hardware and makery folks this month:

I’ll be at OHS and TAPR, but have to skip the NY Maker Faire this year.  I imagine that far fewer folks from OHS will be attending NYMF now that those events are no longer co-located.

Sorry NYMF, but I can’t turn down an excuse to visit my friends in Harvard square.

Join the resistance.