#Ponyprog usb to serial serial#

The Zener diodes D1, D2 with the resistors R1, R2 reduce the voltage from the ouput pins DTR, RTS on the serial port to around 5V which is suitable for microcontroller (MOSI, SCK). The programmer is quite simple and it is based on the SI-Prog from the author of PonyProg software. Here you can find schematic, board layout and component layout of the my ' AVR ISP programmer'. This AVR programmer is compatible with a popular PonyProg software that shows you a status bar of the programming progress.It can be built in very short amount of time.It is in-system programmer so can be used to conveniently program AVR microcontrollers without removing them from the target circuit.This AVR programmer is very cheap due to only few common parts are used.This simple AVR Programmer will allow you to painlessly transfer hex programs to most ATMEL AVR microcontrollers without sacrificing your budget and time.So ISP allows programming of a AVR microcontroller in circuit, avoiding the need to constantly take it in and out of the programmer and the subsequent bending of pins. A socket programmer provides a way to connect just a bare AVR microcontroller to the programmer and ISP programmers however connect to the AVR microcontroller while it is connected to the target circuit. On the AVR microcontroller side there are two possibilities to program the AVR microcontroller, socket and in-circuit. This AVR programmer is called 'AVR ISP (In System Programmer) programmer'. Being a electronics hobbyist I believe in DIY (do it yourself) so here I glad to tell you that my programmer can be built easily in very short amount of time and since there are only few parts, it is very cheap.

There are many kinds of AVR programmers in market, most of these use the parallel port, a serial port (COM port), or the USB but they are very costly and hobbyist like me can not buy such a costly programmer so i decided to make a cheap AVR programmer.

Ponyprog usb to serial