About the article

Simple AVR Programmer

for (almost) all AVR microcontrollers

Simple AVR Programmer
Thanks to their high performance, Flash program memory, integrated hardware functions and low power consumption, Atmel AVR microcontrollers are becoming increasingly popular, even in the semiprofessional area.The AVR series of microprocessors is based on Flash program memory and thus can be easily programmed using an SPI interface. The ability to reprogram the program memory (up to 1000 write cycles) makes these devices very attractive for use in the semi-professional area.The documents and tools that you need for programming these microcontrollers, such as an assembler and debugger, can be obtained free of charge from the Internet site www.atmel.com. These tools are for use with the Windows operating system (95/98/NT). You won’t find any development tools that run under MS-DOS here, which is a good reason for requiring the programmer and associated software to work under Windows.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1,R30-R35 = 10kOhm
R2,R3,R4,R7,R8,R10,R16 = 10Ohm
R5,R6,R9,R12,R15,R19-R22 = 100kOhm
R11 = 270kOhm
R13 = 12Ohm
R14 = 180kOhm
R17 = 220kOhm
R18 = 120kOhm
R23...R26 = 100Ohm
R27,R29 = 470Ohm
R28 = 4kOhm 7
C1,C3,C5,C7,C8,C10,C11 = 100nF
C2,C4,C6,C9 = 10µ F 16V radial
C12 = 1µ F 16V radial
C13,C14 = 22pF
D1-D4,D7,D9-D24 = BAT85
D5,D8 = zener diode 12V 500mW
D6 = zener diode 5V6 500mW
D25 = LED, red, high efficiency
T1 = BC557
T2 = BS170
IC1 = 74HC126
IC2 = TL082
IC3 = 20-way ZIF socket
IC4 = 40-way ZIF socket
IC5 = MAX666CPA or -EPA
JP1 = 3-way pinheader with jumper
K1 = 9-way sub-D plug (male), angled pins, PCB mount
K2 = 14-way boxheader
K3 = mains adaptor socket
X1 = 2.4576MHz quartz crystal
PCB, order code 010055-1
Disk, project software, order code 010055-11 or free download
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