Home Boards The RKAT40c Compact Project PCB for 40 pin Atmegas

The RKAT40c Compact Project PCB for 40 pin Atmegas

This next board combines an Atmega chip which you have to supply and a easy to build minimal system board with parts.

The board is easy to assemble as it features only through hole parts and no smd parts



  • Software is downloaded from a PC into the microcontroller from an Atmel AVR programmer or a FTDI USB cable
  • The clock reference can be either a ceramic resonator or crystal oscillator
  • All input and output pins are available via pin headers – you need to supply your own
  • Power supplied via either a DC socket or there is a 2 way header, the maximum input voltage is 5.5V DC max
  • Power can also be supplied from the FTDI cable connection, there is a 2 way header plug to select USB power
  • Power switch and LED power indicator


There are 2 methods of programming using this board

1) Software can be downloaded using a USB FTDI cable that connects from one of your PC USB port and to header J3.
2) Using an AVR programmer or equivalent, connect this to the ICSP 2×3 way header.

I soldered the resistors first, then the capacitors, switch, led, headers and then the socket

I have used an Atmega16 and an ATmega32 with this board


rkat40c schematic

rkat40c schematic


Rk Education RKAT40c mcc Compact Project PCB : from Amazon UK – £5.99


You can get the board for only £3.99 from Rkeducation directly in the UK

Rkeducation link
RKAT40c MCC Component List and Instructions
RKAT40 Component List and Instructions

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