Universal microcontroller kit
Contents
1. gt 4 Instrumentation Through Innovation ATMEL 8051 controllers a AT89S51 b AT89S52 c AT89S55 ATMEL AVR controllers a AT90S8515 b ATMEGA8515 c ATMEGA161 d ATMEGA162 e AT90S8535 f ATMEGA8535 g ATMEGA163 h ATMEGA16 i ATMEGA32 MICROCHIP 16F877 Over 250 experiments IR communication RC5 Ethernet interface Fastrack GPS interface GSM interface RS232 amp RS485 Dallas 1Wire bus JIC SPI serial interface ADC DAC PWM Stepper DC amp servo control Alpha numeric amp Graphic LCDs Universal embedded microcontroller trainer kit Spectrochem Instruments Pvt Ltd Pm JK E A Sy igo c i A SE Cio Sp J H l2 gS 5 f f TAP A ih Ne iOS Z tthis Cp iT ra Bt E 5 Char zs TTT j The universal microcontroller kit supports multiple microcontroller families the specific microcontroller card only needs to be plugged in to the 64 pin EURO socket The AT89S51 amp ATMEGA8515 CPU card The STEPPER DC amp SERVO motor interface Page 2 User interface Alpha numeric graphic LCD 7 seg displays LED s RTC EEPROM iW Fi j p g P f f S AET id O aa n a a e A Eight 7 segment LED display Alphanumeric LCD interface is available in 4 bit mode amp 8 bit mode the board is fitted with a 16 X 2 LCD with backlight Two types of Graphic LCD s 128 X 64 are supported graph2. DAC can be built using PWM and a low pass filter All the necessary hardware including the buffer opamp is provided on board We also have included a voltage doubler using two opamps for boosting the PWM DAC output to 0 10V PWM can also be used to produce musical notes Spectrochem Instruments a A aa e SCI was incorporated in 1996 At SCI we design amp e d a a of Special accessories and instruments used in analytical mental endine a amp Bio Technology Lab amp Process automation Environ ngineering We have to our credit products which became import sub stitutes for a number of Accessories for ATOMIC ABSORPTION SPECTROME Pvt Ltd B 23 Huda Complex Saroornagar Hyderabad Andhra Pradesh 500 035 INDIA Phones 91 402 420 1570 74 Fax 91 402 420 1574 E mail spectro_hyd vsnl net We work with mo re than 80 microcontr i ollers across four famili microcontroller manufacturers such as amilies from leading 89SXX 8051 core Silicon labs ATMEL Phillips etc ATMEL AVR complete family from Tiny to Mega PIC 10F 12F 16F 18F amp DS PIC TI MSP430 Instrumentation Through Innovation Our 12 years experience in e trol Check out this course at our website www enggstudentprojects com Programming Building embedded applications choice of languages Building applications for embedded sys tems requires tools like assembler compiler debugger etc Embed
3. ded sys tems can be programmed using the micro specific assembler however this is quite tedious for product development where the code is quite large A number of high level languages are available for code development The com pilers come with an integrated develop ment environment IDE featuring com piler text editor simulator debugger amp programmer Popular High level language compilers a BASIC b C c FORTH d PASCAL e Ada For 8051 amp ATMEL AVR best BASIC com piler is BASCOM 8051 amp BASCOM AVR from MCS electronics holland Llly the best C compiler for 8051 is RIDE amp for AVR is CAVR For microchip PIC amp dSPIC PIC BASIC Pro from ME labs PROTON SUITE from Crown hill co UK MikroBASIC MIKROC amp MIKRO PAS CAL from mikroelektronika a b c Best C compiler for PIC is FED PIXE from Forest electronics d The tool chain preference differs from user to user We have put here the ones which a student or a beginner can afford amp at the same time is comfortable with the tools Also Most of the compiler manu facturers listed here give generous evaluation versions They are all reasonably priced amp afford able Good working examples are pro vided amp large user forum also exist We provide a two day training program for all education institutions buying at least 5 of our kits free of cost The kit is supported with a good use
4. ic LCD s require 8 bit interface amp also some additional lines All the nec essary hardware is provided on board for the three type of LCD sThe LED s are provided with current limiting resistor amp driving transistor Bipolar transistor array ULN2803 is used for driving the LED s The eight seven segment LED display is driven by just 3 I O lines using MAX7219 SPI bus interface Communication RC5 RS232 RS485 GPS Serial ETHERNET gateway RS485 serial interface RC5 is a television IR communication standard Developed by Phillips used in remote controls The ATTINY2313 con troller is programmed for both RC5 IR decoding as well as IR transmission Asynchronous communication standards like RS232 amp RS485 are provided on board with all the necessary hardware The GPS interface employs RS232 serial communication employing NMEA protocol for data display The communication between the GPS amp microcontroller should be at 4600 baud Similarly the GSM communication interface too employs the RS232 interface however here the GSM mod ule can support up to 115Kbps The protocol employed for interface is the GSM AT command set Though the AT com mand set is standardized some commands are specific to the GSM module being used RS232 communication can be implemented in full duplex mode or half duplex mode generally is always used in full duplex mode The limitation of RS232 communication is that the cable length must be lim
5. ited to 10 meters Moreover as per RS232 standard it is meant for communications between two devices RC5 IR RX amp TX Synchronous serial communication protocols like IIC SPI amp MICROWIRE reduce the PCB real estate thus saving power amp I O lines Universal embedded microcontroller trainer kit RTC DS1307 with Battery IIC EEPROM AT24C08 Conventionally it would have required at least 12 I O lines and BCD driver chips like CD4511 Real time clock DS1307 amp EEPROM AT24C08 share a common two wire interface IIC bus also called the TWI interface The SCL amp SDA lines are the only two lines required to complete the interface The RTC is also fitted with a 3V battery back up to maintain time even when the power is disconnected Up to eight same devices can exist on the IIC bus however many other different devices can also co exist GSM Ethernet amp Dallas 1Wire PJ ag 5 b y 3 Aa f zji ar 1 n i oe LL yo GSM interface FASTRAX GPS receiver Other television remote control stan dards are RC80 amp SONY SIRC these Signals also can be easily decoded We can program the TINY2313 chip for these standards if you desire only However in industrial systems data need to be transmitted over great distances typically up to even a kilometer It also is required to network many measurement amp control points The best interface for such systems is the RS485 mu
6. ivider Photo transistor or a tem perature probe with signal conditioner may be interfaced as experiments By interfacing relays or the SSR a complete control system too can be easily built Eight bit DAC 0808 with I to V Audio amplifier with LM386 seaeed ne j gs i bil bs 3 goonia Six 3ms S P D T Relays The board also features six fast acting 3ms S P D T relays amp a solid state Relay All the out put connections C N C amp N O are available for connections ULN2803 bipolar NPN transistor We also have affordable general purpose microcontroller experiment boards priced at Rs 3500 only array is used to drive these amp the buzzer The digital to analog converter is DAC0808 an eight bit single channel current output device The reference volt age amp 12V required to operate are also connected A I to V converter is also built using LF356 The eight bit interface is connected to a latch 74LS373 DAC are employed in feedback systems The ADC amp the DAC can be implemented in a simple total feedback control loop application Another example is in building a P I D controller PWM or pulse width modulation is avail able on the RISC CPU s such as AVR amp PIC Usually 10 bit PWM hardware is as sociated with one or two timers on the chip The PWM signal can be employed for efficient DC motor speed control It is also used in the Inverter technology to produce true sine wave output A
7. lti drop network It can transmit data over 4000 feet 1 3 Km approx multiple devices can be connected on just three conductors however RS485 is a half duplex system The RS232 serial ETHERNET gateway accepts data through the Rs232 serial interface it packets the data into a TCP IP stream amp transmits out to the LAN network The board supports DHCP or a configurable IP address Link status is also provided through four status LED s Dallas 1Wire network requires only a single line for data inter change the same line that powers the system also carries the data the other line is common ground This interface was devel oped by Dallas semiconductors for popular iButton interface Spectrochem Instruments Pvt Ltd Page 3 Motor control Uni polar Bi polar steppers DC motors SERVO s amp buzzer Uni polar stepper motor drive Motor control amp interface is available on our multi motor inter face card The uni polar stepper motor interface employs four discreet NPN darlington transistors with protection diode cir cuitry Four bits of microcontroller are required for stepper mo tor interface The stepper is usually driven in a two phase exci tation full step mode for good torque characteristics A eight wire unipolar motor can also be configured as bi polar drive Bipolar drive offers typically 60 better torque than uni Bi polar stepper motor driver j Noa L293 DC motor driver Hobby DC servo motor dri
8. r s manual which is well illustrated amp introduces the interface standards in simple amp lucid man ner PA Madhav Tenneti Managing Director
9. ver G la a 5 Sf 2 t x ko 5 D x HOF we St gt hel PS ure r an we YS J A 4 8N0I Piezo Buzzer polar drives Here the driver is implemented using L297 amp L298 H Bridge driver In bi polar drive mode the motor drive voltage is typically double of uni polar operation The DC motor control is possible through PWM amp L293 H Bridge driver bi directional DC motor control is also possible PWM can either be implemented using software routines or employing on chip hardware DC servo motors are used in RC hobby circuits for navigation Analog ADC DAC PWM PWM DAC Audio Amplifier IR reflectance probe ee Jc man CTT Eight bit ADC 0808 mi ee s J f i amp 7 r ah i Ls 4 Bs a FANS 6 PPA a as raat yi F hl K ie o ay Hir TCRT9000 is an IR trans reflectance sensor It contains an IR emitter amp a detector in the same package The sensor can be used in proximity detector applications It can also be used in pro jects like line follower robot The Analog to Digital converter provided here is the parallel interface type ADC0808 This is an eight bit device with eight channels Eight data lines amp three control lines are required to interface this chip Also a clock source is required a 555 timer is employed here for providing the required clock All the eight analog inputs are available through a screw wago connector A volt age d
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