General purpose for all cannon models.
Goto Ebay and get a cheap chinese made camera shutter release.
The one I ordered was entitled “Shutter Release Cable for Canon EOS 5D 40D 30D 20D”
Once this comes in, cut off the end, you need the connector to connect to the higher end cannon models, but electrically they all work [...]
I was programming the arduino and ran into a limitation regarding the memory inside the device. The 328 chip only has 2KB of RAM for data strings. And if you lose power that memory goes away. It has 1KB of eeprom that is retained between reboots, which is only a day or two of data [...]
Lets build an alarm clock.
It has to be better than a regular alarm clocks in several ways. The first thing is that the alarm should only sound on work days. It should not go off on weekdays nor on days on an exception list, these are holidays, no work.
It should slowly begin making chirping noises [...]