PROGRAM AVR UNTUK MIKROKONTROLER

AVR PROGRAMMER FOR MICROCONTROLLER

This simple AVR Programmer will allow you to painlessly transfer hex programs to most ATMEL AVR microcontrollers without sacrificing your budget and time. It is more reliable than most other simple AVR programmers available out there and can be built in very short amount of time.

AVR programmer consists of in-circuit serial programmer (dongle) and small pcb with a DIP socket where you can fit your microcontroller and have it quickly programmed.

You may also use this programmer as a stand alone in-circuit serial programmer that can be used to conveniently program AVR microcontrollers without removing them from the target circuit.

Entire AVR programmer has been build with using common parts and fits in the case of the serial connector. The socket pcb has been created to fit a 28-DIP AVR ATmega8 microcontroller, but you can build a socket pcb for any other AVR microcontroller out there. This AVR programmer is compatible with a popular PonyProg software that shows you a status bar of the programming progress.

avr programmer

AVR In-Circuit Serial Programmer

avr programmer schematic

AVR Programmer's PCB (front) with 9-PIN female RS232 serial connector.

AVR Programmer's PCB (back)

Fitting AVR Programmer's PCB in RS232 serial case.

Finished AVR Programmer with standard 6-PIN ICSP connector.

AVR Socket PCB


Socket PCB has very minimal number of components and is used for programming your desired AVR microcontroller outside of your target circuit.

Socket PCB with 28-DIP AVR ATmega8 microcontroller.

There are two connections; ICSP that connects to AVR Programmer, and external +5V supply.

Socket PCB consists of the PCB, 28-DIP socket, 4MHz crystal resonator, or crystal with two 22pF decoupling capacitors, and two header connectors. Two-PIN connector supplies +5V voltage to the AVR microcontroller, and 6-PIN ICSP connects to AVR Programmer dongle.

Supplying microcontroller with external +5V voltage as opposed to taking it directly from computer's serial connection port ensures that the chip is receiving exactly +5V voltage and provides very reliable error free programming.

Socket PCB for 28-DIP AVR ATmega8 microcontroller.

+5V voltage supply for AVR chip may be provided from external power supply or even better - directly from USB connection.

VIA

Read More → PROGRAM AVR UNTUK MIKROKONTROLER

MIKROKONTROLER ATmega48/88/168 SKEMA

Skema Rangkaian Mikrokontroler ATmega48/88/168

ATmega48/88/168 Development Board

This is versatile development board for AVR microcontrollers ATmega48/88/168. It is good for testing and debugging embedded programs. It has many built-in peripheries connected to microcontroller so you can use them without soldering. ATmega microcontrollers are produced by ATMEL and they include a lot of features: I/O, Timers, PWM generators, ADC, RS232, TWI, SPI, Analog Comparator, Oscillator, EEPROM… These microcontrollers are very versatile, easy to program and easy to use. This is the reason why I like these microcontrollers and why I decided to make development board for them.

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The development board consists of:

1. ATmega AVR microcontroller in DIP28 package
The development board is designed to use ATmega48 with 4kB flash memory or ATmega88 (8kB), ATmega168 (16kB). New version of these microcontrollers ATmega48P/88P/168P and ATmega328P (with 32kB) are pin compatible with old version, so they can be used also.

External crystal X1 is placed in socket, so it is easy to change it or remove it. If internal oscillator is used then two PB6 and PB7 pins dedicated for crystal can be connected to the Port B connector.

Microcontroller can be reset by pressing reset button S1.

2. AVR Ports B, C, D headers
If built in peripheries are not used another device can be connected to the PORT B, C and D. Each port is connected to the 10-pin header. You could connect LCD display, Rotary Encoder, SD Card Reader, etc. with microcontroller. See my future posts.


3. 5V Power supply
Both AC and DC voltage can be plugged in, because of using rectifier bridge. Input voltage can be connected to 2.5mm power jack connector or screw terminal. Power can be switch on / off by SW1. Power supply voltage is stabilized by common IO 7805. When the power is switch on red LED6 is lighted.

4. 4x LEDs
Four green LEDs can be connected to the Port D shorting jumpers JMP6-9.


5. 4x Buttons
Four buttons are connected to the Port B.


6. Piezo
Piezo speaker can be connected to pin PB1 through JMP5.


7. ADC accessories
The microcontroller has built-in 10bits AD converter. On the board is LC filter for power supply of this ADC. You can use internal or external reference. The rotary trimming resistor R2 is connected to Aref input for playing with the external reference.


8. Potentiometer
For simulation of varying ADC input voltage the rotary trimming resistor R1 can be connected to PC1 (ADC1) through JMP12.


10. Temperature sensors
If you want to play with temperature sensor, you can connect temperature sensor with either analog or PWM output. Temperature sensor with analog output can be connected to the PC0 (ADC0) through JMP10. Temperature sensor with PWM output can be connected to the PB0 through JMP11.


10. RS232 line
Standard serial interface is placed on the board. Level shifter MAX232 is used. MAX232 has two receiver and two transmitter lines. You can connect RXD and TXD of RS232 with RXD and TXD of microcontroller with help of config header. RTS and CTS of RS232 can be connected with PD6 and PD7 through JMP3 and JMP4. See config header part.


11. Config Header
Config header allows interconnect different I/O microcontroller pins with RS232 line or with screw terminal.


12. Srew terminals
Screw terminals allow easily connect wires to microcontroller. Through this terminal you compose for example frequency counter of voltmeter, etc. Ground and 5 Volts are also presented on screw terminal.


13. ISP
Development board includes serial port interface to allow direct in-system programming (ISP). Microcontroller can be programmed trough RS232 serial port by using program Pony Prog or Avrdude (ponyser). To avoid interference with RS232 signals, programmer can be disconnected using analog switches 4066. These switches can be closed manually by SW2 or automatically when the reset is active (using JMP13).


14. Mounting Holes
In each corner of PCB is placed one ø3.2mm mounting hole.

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And the result ...

Assembly diagram

Top Side

Bottom Side

LINKS:

Following web side inspired me to build the development board.

AVR Development and Application Boards

You can download this project including whole schematic, assembly diagram and PCB.

ATmegaa48 Development Board


Source

Read More → MIKROKONTROLER ATmega48/88/168 SKEMA

Simple Serial Programmer for AVR

This is a very simple and easy to build programmer for Atmel microcontrollers from AVR family. The microcontrollers must support serial programming. This programmer is connected to a PC through the RS232 serial interface and can be used with the PonyProg or Avrdude software programmer.

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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. The resistor R4 helps to close the transistor T1. The programmer has standard 10 pins header.

Schematic of the serial programmer


Assembly diagram

PCB (top side)

PCB (bottom side)


Panelization (When you need more pieces.)


Assembled PCB (top side)

Attention:
The transistor T1 should be in opposite position then is depicted in the assembly diagram.
Please check the position of Base-Colector-Emitor on your transistor.

I use this programmer for programming Attiny13, Attiny26, Attiny2313, Atmega48, Atmega88, Atmega168, Atmega16 and it works very well. I also use the programmer with desktop computer, laptop, with and wihout USB-to-RS232 adapter and it works in all cases.

Using PonnyProg2000:

When you want to program your microcontroller with the PonnyProg2000 you have to setup the program as you can see on the following picture. You have to select chosen COM port, where is connected your programmer.

Ponyprog I/O port setting

Using Avrdude:
When you want to program your microcontroller with Avrdude you have to select the keyword "ponyser" as a programmer type and appropriate COM port. I'm using this method to program my microcontroller directly from the Atmel AVRstudio when I'm debuging my application. I create a batch file with the command for the avrdude and I call the batch file directly from the tool bar. It is very fast and easy. Avrdude is also part of the WinAVR package.

Microcontroler programming by avrdude

Programming header reduction:
Sometimes you have to program microcontroller in a aplication where is only 6 pins header instead of 10 pins. I created small adapter for this purpose. The adapter has 10 pins header, 6 pins header and 6 pins header in one line. 6 pins header in line is useful when you want to bring the signals to the breadboard.

Schematic of the programming header reduction


Assembly diagram


PCB (bottom side)


Assembled PCB (top side)

With this equipment you should be able easily program your AVR microcontrollers. Good luck.

SOURCE

LINKS:
PonyProg2000

Download project including schematic, assembly diagram and PCB.

Read More → Simple Serial Programmer for AVR

Rangkaian Jam digital RTC Menggunakan Bascom 8051

RTC with Bascom 8051 Micro controller Circuit Scheme

Projects this time we use language BASIC for the programmer. In addition, we also introduced the real time clock the programmer on AT89C2051. If you are not patient to try to please tough first series of its image.

Read More → Rangkaian Jam digital RTC Menggunakan Bascom 8051