I’ve always wondered if HAM radio would be an interesting hobby. Well if I got to design as many antenna launching devices as these guys it would be worth it. The pneumatic gun fires a tennis ball that trails a fishing line. Once the line is in the tree it can be used hoist the actual antenna. The site has plans for a large number of devices with different triggering mechanisms and sizes. Some are even small enough to fit in a ten gallon tub.
Continue reading “Pneumatic antenna launcher”
In last week’s installment, we showed how to get started with Csound. This week we take it to the next step by constructing a homemade MIDI controller circuit and use the new device to control Csound in real time.
What you will need:
a computer on which you have Csound up and running
a MIDI adapter for your computer (usb to midi adapters are the norm here)
a microcontroller / breadboard / microcontroller programmer (in this example we will show some BX24 sample code)
a MIDI female connector (either a cable or circuit board mount type, also known as 5 pin din)
a 2N2222 NPN transistor
some resistors (10Kohm and 220ohm)
some sort of sensor or button or potentiometer or any combination of the above
Continue reading “How-To Control Csound with a Custom Midi Controller: Hardware (2 of 2)”