Several people asked me how you connect an ISP programmer to an ATMega8. It never occured to me that this could be a problem for anyone. But anyway, here is a schematic.
Over time, I will write a tutorial on how to program AVR controllers.
Please note that the header shows Atmel's standard pinout for the 10-pin ISP header. Most programmers use that same pinout. But to be safe you should check your ISP programmer's manual.
I hope this is useful for someone!
10 April 2013
2 April 2013
The transistor as current source
In part 3 of this tutorial we looked briefly at several current sources, which contain integrated circuits. In this part, we will look in more detail at a simple current source built from a transistor, a zener diode and two resistors.