Proje Dosyası

Malzeme Listesi
IC1 PIC16F871 Microchip microcontroller
IC2 TC77 Microchip digital temperature sensor
LCD1 7-segment 3½ digit LCD
Q1 4MHz crystal
C1, C2 15pF ceramic capacitor
C3 100nF/6V ceramic capacitor
S1 ON/OFF switch
BAT1 CR2032 socket and Lithium battery
misc Printed Circuit Board (PCB), strip board or bread-board
housing for the electronics

Yardımcı Linkler

* Microchip TC77 temperature sensor
* Microchip PIC16F871
* 7-segment 3½ digit LCD

COL0 COL1 COL2 COL3
ROW0 1 2 3 A
ROW1 4 5 6 B
ROW2 7 8 9 C
ROW3 * 0 # D

Malzeme Listesi
IC1 PIC16F84-10 or
PIC16F84A – Microchip microcontroller, pre-programmed
IC2 78L05 or
7805 – 5V output voltage regulator
Q1 BC301 or similar npn bipolar transistor, Ic(min)=500 mA
D1 1N4001, 1N4004 or 1N4007 diode
LED1 any color LED or
3mm green LED
R1 1 kohm 1/4W resistor
R2 220 ohm 1/4W resistor
C1 22 pF ceramic capacitor
C2 22 pF ceramic capacitor
C3 100 nF ceramic capacitor
C4 100 nF ceramic capacitor
X1 10MHz or 4MHz crystal
BUZZER ceramic piezo sounder
(also called ‘piezo diaphragm’, ‘piezo audio transducer’, ‘piezo audio indicator’)
keypad 3×4 or 4×4 matrix keypad
K1 relay, see text for specifications
misc power supply with 8-30V DC output – suggested voltage is 12VDC
connectors for the power supply and the keypad
Printed Circuit Board (PCB), strip board or bread-board
flexible wires for connecting relay, LED, buzzer, power supply, keypad
housing for the electronics

Devrenin Baskı Devresi ve Malzeme Yerleşim Planı

ASM ve Hex Dosyası

Ayrıca Devreye Display Eklemek İsterseniz Aşağıdaki Devreyi Kullanabilirsiniz…

Malzeme Listesi
IC1 PIC16F627 or
PIC16F628 or
PIC16F627A or
PIC16F628A – Microchip microcontroller, pre-programmed
IC2 78L05 or
7805 – 5V output voltage regulator
Q1 BC301 or similar npn bipolar transistor, Ic(min)=500 mA
D1 1N4001, 1N4004 or 1N4007 diode
LED1 any color LED or
3mm green LED
R1 1 kohm 1/4W resistor
R2 220 ohm 1/4W resistor
C3 100 nF ceramic capacitor
C4 100 nF ceramic capacitor
BUZZER ceramic piezo sounder
(also called ‘piezo diaphragm’, ‘piezo audio transducer’, ‘piezo audio indicator’)
keypad 3×4 or 4×4 matrix keypad
K1 relay, see text for specifications
lcdif serial LCD interface: an HD44780-compatibe 2×16 char LCD and some more electronics
optional, see text
lcdconn 6-pin header for connecting the LCD interface
misc power supply with 8-30V DC output – suggested voltage is 12VDC
connectors for the power supply and the keypad
Printed Circuit Board (PCB), strip board or bread-board
flexible wires for connecting relay, LED, buzzer, power supply, keypad
housing for the electronics

Proje Dosyaları

After visiting some web pages about 2.4 GHz ISM band spectrum analyzers based on the CYWM6935 module, I tried to build my own analyzer, but with some improvements. The references I found on the net used the parallel port or a serial link to a host computer. I want the analyzer to be portable, and easy to transport, so I will use a microcontroller and a graphical LCD.

I had also some old Nokia phones, so maybe I can use phone plastic box and build in LCD to make my own portable analyzer, but… Does it can be done? Let’s see:

Microcontroller: The microcontroller would be an ATMega8 running at 3.3 volts because both the the LCD module and the CYWM6935 are 3.3 volts devices. The ATMega8 will do nicely the job even running with low internal clock rates, so I choose to run it at 4 MHz using the internal oscillator.

LCD: The LCD would be the one from the phone, in this case a Nokia 3410. The LCD uses a PCD8544, so it must be easy to work with it. There are many code around to use this kind of LCD controllers

Battery: This phones can use two kind of batteries: Li-ion and Ni-Mh, but both types are equivalent from the equipment’s point of view. Useful voltage range is 4.2 down to 3.6 volts. My first idea was to use a voltage regulator to 3.3 volts, but I didn´t find a suitable one, so I choose to put a single 1N4004 diode between the battery and the circuit. The useful range (4.2 town to 3.6 volts) minus the 0.6 volts drop out at the diode will be seen as 3.6 down to 3.0 volts at the circuit supply. The LCD and CYWM6935 module can work from 2.7 up to 3.6 volts, so everything must work safely.
The prototype

I mounted a prototype to test module and microntroller functions when I found my first problem. According to the info on Internet, Nokia’s 3410 LCD uses a PCD8544 controller, the same as the Nokia 3310 LCD, so both LCD can be driven with the same firmware. Yes and no. Both LCD use the same PCD8544 instructions set, but screen resolutions are different. Original Nokia 3310 LCD is 84 x 48 pixels, but Nokia’s 3410 LCD is 96 x 65 pixels, so LCD routines must be rewritten to use the new resolution.

After rewriting the routines, you must expect a working LCD, isn’t it? Not again. The Nokia 3410 LCD have a visible resolution of 96 x 65 pixels, but the real resolution inside the LCD controller is 102 x 72 pixels, so you must to have this in mind while writing your code.

İngilizce Siteden Alıntıdır. İngilizcesi olanlar için Süper Proje…

Proje Kaynak Sayfası

Açıklamalar
Cıvıl cıvıl bir kanarya bir elektronik versiyonu. alarm, ses efektleri jeneratör ya da belki bir yedek kapı zili olarak kullanılabilir.

Örnek Zil Sesi Dinlemek İçin TIKLAYIN

Devreyi 1.5 voltluk pil gerektiren yerlerde rahatlıkla kullanabilirsiniz.

Sevgililer Günü (14 Şubat 2010) itibariyle başlayacak ve 1 Mart 2010 tarihine kadar sürecek olan 7’den 7’ye Bedava Kampanyası’nda, Türk Telekom hattı olan herkese akşam 19.00’dan sabah 07.00’ye kadar yapılacak olan şehiriçi ve şehirlerarası yönündeki aramalar bedava olacak.

Şubat Kampanyası’na ilişkin olarak görüşlerini dile getiren Türk Telekom Satış Başkanı Aydın Çamlıbel, şunları söyledi: “Bayram ve yılbaşı döneminde ikişer günle başladığımız, yarıyıl tatili döneminde de 1 hafta uyguladığımız bedava dakika sunan kampanyalarımız, müşterilerimiz tarafından yoğun ilgi gördü. Yarıyıl kampanyası döneminde konuşma trafiğimizin akşam 19.00 sabah 07.00 saatleri arasında 2 katına çıktığını ve tüm gün trafiğimizde de %24 artış olduğunu gözlemledik. Aynı zamanda kullanıcılardan çok olumlu geri dönüşler aldık. Bu doğrultuda 7’den 7’ye Bedava Kampanyası’nı düzenleyerek müşterilerimizin daha uzun bir dönemde bedava görüşme yapabilmesinin önünü açtık. Müşterilerimizin hayatına değer katan kampanyalar düzenlemeye devam edeceğiz.”

Tüm bireysel müşterilerin faydalanabilecekleri ve iki hafta boyunca devam edecek olan kampanya için herhangi bir başvuru ya da taahhüt gerekmiyor. Bu kampanyada 3 bin dakikalık adil kullanım limiti uygulanıyor.