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1  Using Arduino / Microcontrollers / Arduino and ATMEGA644 - DIP 40 PINS - 64k Flash on: February 22, 2012, 03:30:24 pm

I have a problem, lack of flash memory.
I can not use "Mega" the 2560, my project has to be DIP socket.

The processor ATMEGA644 is compatible?
What needs to change to be compatible?

http://www.farnell.com/datasheets/82623.pdf

Advantages:

DIP Easy to assemble, we can use sockets.
40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF
32 Programmable I/O Lines
64K Bytes of In-System Self-programmable Flash program memory.


Quote

Features
• High-performance, Low-power AVR® 8-bit Microcontroller
• Advanced RISC Architecture
– 131 Powerful Instructions – Most Single-clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 20 MIPS Throughput at 20 MHz
• High Endurance Non-volatile Memory segments
– 64K Bytes of In-System Self-programmable Flash program memory
– 2K Bytes EEPROM
– 4K Bytes Internal SRAM
– Write/Erase cyles: 10,000 Flash/100,000 EEPROM(1)(3)
– Data retention: 20 years at 85°C/100 years at 25°C(2)(3)
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
– Programming Lock for Software Security
• JTAG (IEEE std. 1149.1 Compliant) Interface
– Boundary-scan Capabilities According to the JTAG Standard
– Extensive On-chip Debug Support
– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features
– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture
Mode
– Real Time Counter with Separate Oscillator
– Six PWM Channels
– 8-channel, 10-bit ADC
Differential mode with selectable gain at 1x, 10x or 200x
– Byte-oriented Two-wire Serial Interface
– One Programmable Serial USART
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
– Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby
and Extended Standby
• I/O and Packages
– 32 Programmable I/O Lines
– 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF
• Speed Grades
– ATmega644V: 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V
– ATmega644: 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 - 5.5V
• Power Consumption at 1 MHz, 3V, 25°C
– Active: 240 μA @ 1.8V, 1MHz
– Power-down Mode: 0.1 μA @ 1.8V

2  Using Arduino / LEDs and Multiplexing / Re: Graphic LCD 12864 works on UNO? on: January 11, 2012, 07:23:06 am

Sorry all for this noob question, here is working!



This is the library: http://code.google.com/p/glcd-arduino/

Best regards!

3  Using Arduino / LEDs and Multiplexing / Graphic LCD 12864 works on UNO? on: January 10, 2012, 02:38:58 pm
I found that lib: http://arduino.cc/playground/Code/LCD12864

Works on UNO?

Best regards!
4  Community / Exhibition / Gallery / Re: ARDUINO EFI - 20x4 LCD boost by MAP sensor and PWM dutycycle. on: January 07, 2012, 01:27:22 pm
I do not think to invent the wheel again, this is just a prank. I have a MegaSquirt2 board here, but I would like to do something different.

This STM32F4 looks very interesting.

http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/DM00035129.pdf

Has a development board, cost very interesting.

http://www.st.com/internet/evalboard/product/252419.jsp

I like Arduino because is very easy to developing, do you know of any material, libraries, communities to development on this board?
5  Community / Exhibition / Gallery / ARDUINO EFI - 20x4 LCD boost by MAP sensor and PWM dutycycle. on: January 06, 2012, 11:22:49 am
I'm making a prank with an cheap Arduino made in China, I'm playing with this a few days.

The idea is:

- A 20x4 LCD providing information about Manometric Pressure in BAR.
- The sensor is a MAP MPX4250AP.
- Control the PWM timer registers dutycycle.

The concept is pulse a fuel injector by a PWM, changing the opening time by a duty cycle based by MAP pressure and VSS RPM sensor.
With this, we have a basic to control a fuel injection, I said "basic", to control a engine is necessary some more variables.

For those interested, my desire is to open an opensource project like a Megasquirt for Arduino, a very cheap and simple fuel injection

My channel: http://www.youtube.com/turbownz







Best regards!
6  Using Arduino / Project Guidance / Re: Two way bluetooth serial communication strategy on: January 03, 2012, 12:48:10 pm

Look my project, its a cheap US$ 6,00 Deal Extreme bluetooth module.



7  International / Portugues / Re: Modulo Bluetooth para arduino ( super compacto - super set de instruções AT) on: December 30, 2011, 02:21:22 pm
Estou usando um modulo exatamente igual, veio com outra versão de firmware. Dai eu troquei a flash para HC05 e meus problemas foram resolvidos.

Aqui um ótimo material que ensina a fazer o reflash e os comandos AT.

http://trainelectronics.com/Bluetooth/

http://byron76.blogspot.com/2011/09/hc05-firmware.html

http://club.dealextreme.com/forums/Forums.dx/threadid.940531

Fiz este teste no dia que o modulo chegou, foi quando descobri que vinha com firmware Linvor.





8  International / Portugues / Re: OFF TOPIC on: December 28, 2011, 01:26:55 pm
 smiley-mr-green
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