This is a very simple and easy to build programmer for Atmel microcontrollers from AVR family. The microcontrollers must support serial programming.

1. Ponyprog Usb Charger
2. Ponyprog Serial Interface

This programmer is connected to a PC through the RS232 serial interface and can be used with the PonyProg or Avrdude software programmer.Description of the serial programmer:The programmer is quite simple and it is based on the SI-Prog from the author of PonyProg software. The Zener diodes D2, D3 with the resistors R2, R3 reduce the voltage from the ouput pins DTR, RTS on the serial port to around 5V which is suitable for microcontroller (MOSI, SCK). MISO signal is connected directly to the input CTS pin. The Zener diode D1 with the resistor R1 drive the NPN transistor T1, which controls RESET signal.

The AVR microcontrollers are in reset when the signal has low level. The resistor R5 works as a pull-up for reset signal.

Ponyprog Usb Charger

The resistor R4 helps to close the transistor T1. The programmer has standard 10 pins header. Said.Hello MiroslavThanks for sharing this very simple ISP programmer.You write that it can be used with a USB-RS232 adapter.

I bought a USB-RS232/TTL adapter based on a CP2102 chip. This adapter gives all the signals of the RS232 at a TTL level as well as +5V and +3.3V.I connected it according to your schematic, of course removing the resistors and Zener diodes limiting the voltage. Unfortunately, I was unable to connect to the atmega neither with Ponyprog2000 neither with avrdude, although your programmer works fine with the ordinary serial port (COM1) of the PC, thus without the adapter.It would be great if you could help using this cheap adapter with your programmer, permitting people to start working with a very low budget.Anyway, many thanks for your work. Said.why this man has stopped giving the support and giving answers to the questions of a lot of persons???

Ponyprog Serial Interface

Since long time!!this is just a wastage of internet pages n time n network space that people make something and then make it wrong and show their dumbness!!read all the comments very carefully and you will never find the answer of the question people ask almost 20 times that we get an error - 'unknown device or device missing'. 'device not find code (-24)' why this person say theM to send the email? And WHY NOT POSTING HERE IN THE PLACE ITSELF??? BE AWARE THIS IS A SCAM.!! OF MAKING PEOPLE FOOL AND WASTING THEIR TIME! THIS IS A SOCIAL CRIME!!SHAME ON YOU WHO MADE THIS!!