ation's Electronic Lock Farnell Order code 120-108 Circuit D

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ation's Electronic Lock Farnell Order code 120-108 Circuit D

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ation's
Electronic Lock Farnell Order code 120-108
Circuit Diagram
BC237B
MCLR OSC1 OSC2
PASS FAIL
4.5V BATTERY
B0/INT A4/TMR0 PIC16F84
PROGRAM
100nF
100pF
BC237B
Board Layout Assembly Insert components shown, ensuring correnctly inserted. Check board solder bridges joints before applying power. Leds should inserted with longer lead symbol drawing. battery holder best inserted with pins passed through board, soldered then gently folded under board finally attached with doublesided supplied.
Connections customer circuit.
Operation Alarm modes operation program run. Initial coding achieved placing header link onto pins (U1). This will activate program mode. Remove link before digits entrered. digits required entered. This acheived depressing push buttons sequence, i.e. etc, combination wish. each digit entered, pass light will flash once. completion number, pass light will flash seconds. will move into sleep mode will woken button press. user enters correct digits, green light will stay seconds. incorrect code entered, light will illuminate. transistors used drive electronic locks alarms. change code, replace link header. Enter code. light will flash. (This indicates original code been removed). Enter code again. completion green light will flash. Remove link header. software self explanitory should difficult follow. Modifications code could change number codes, timeout delay lockout greater than preset consecutive errors.
Moving from here wish learn more about PIC, there number books subject which will assist. Beginners Guide Cookbook Cookbook Farnell order code AD31 Farnell order code DT76 Farnell order code VQ59
minimum hardware needed started Start Plus programmer (Farnell order code 704-740) which supplied with it's development environment MPLAB. From there could branch ICEPIC Circuit Emulator which speeds development time. software disk text format which printed from wordprocessor package EDIT.
Parts List should contain following items. there shortage, please contact your supplier first instance. Part Description Capacitor 100pF Capacitor 100nF Single header plug Miniature closed jump link Green Resistor Resistor Resistor Adhesive foam Push buttons BC237B Transitor mounted battery Diskette Printed circuit board Quantity Circuit reference -SW1 -IC1
Directive This product manufactured small quantities been tested compliance with EMI/EMC regulations (e.g., Europe, U.S). Bluebird Electronics does market recommend this product applications that would require documented compliance with such regulations. compliance required your application, must assume that this product does comply, unless your testing shows otherwise. installing using this product, accept responsibility consequences non-compliance with applicable standards. Bluebird Electronics responsible special, incidental, consequential damages resulting from breach warranty, under legal theory, including lost profits, downtime, goodwill, damage replacement equipment property, costs recovering, reprogramming, reproducing data associated with hardware software described herein.
Bluebird Electronics Suite Townsend Barn, Poulshot, Devizes. SN10 1380 1380 internet www.bluebird-electronics.co.uk email info@bluebird-electronics.co.uk 10/01

ation's Electronic Lock Farnell Order code 120-108 Circuit D

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