I have always had problems with OpenOCD, mainly due to bad documentation out of sync with the code. I got a new evaluation board for the LM3S2965 processor (EK-LM3S2965) last week and gave OpenOCD a new try, and lo, this has become quite simple. Continue reading ‘Stellaris Cortex and OpenOCD’
Archive for the 'Hardware' Category
I was involved with the development of a 5 kW hydro-electric power generator in 1985. It has now run for 25 years and I publish this description of the plant to celebrate. Continue reading ‘A small DIY hydro-electric power generator’
I have produced the control system for several pipe organs using electro-magnetic solenoids for the stop actions. I just finished a new one where we use pneumatic cylinders to provide force. A pneumatic system can actually work without producing much noise if set up correctly. So we are very happy with this new organ in St. Johannes church, Stavanger, Norway. Continue reading ‘Pneumatic organ control’
When starting out as an engineer, building electronic circuits of many kinds, my mentor advised me to always leave a copy of the schematics within the box. This is a wise proposition, the schematics in the box will probably be up to date and readily available. On the other hand, external documentation may be displaced and even lost during a period of time. This is equivalent to program documentation: Comments within the source file are easier to keep up to date than some external documentation, like flow sheets.
Now I use a board with a micro controller which flash memory is much larger than what I need for the application. So why not use that spare flash to embed some docs? Continue reading ‘Store docs in the microcontroller’s flash’
An open hardware project involving a PCB with an AT91SAM7X128 processor with galvanically isolated CAN bus and power running off 24V DC. All documentation needed for production (schematics, board layout, gerber files) is included in this tar-archive. You are free to use and produce this hardware, see the included license file. This project is also registered with Harkopen.
My graphic card felt hot to the touch, it needed some cooling. This is not an advanced card, so there is no on card fan. Continue reading ‘A fan for my graphic card’
This PC is built into a very simple case: a ring binder. The PC is anembedded controller – not used by humans but independently doing its specialunsupervised job. In this case it wakes up once a day, takes a picturewith a USB camera, stores it and then powers off again. Continue reading ‘The ring binder PC’