Closeup of the intruder alarm circuit board, with AVR ATtiny2313 microcontroller.
Stripboard inside of the intruder alarm system controller
Closeup of the stripboard and AVR ATtiny2313 microcontroller.
Closeup of the AVR ATtiny2313 microcontroller and stripboard.
Inside intruder alarm, all components installed.
Circuit board fitted inside box, AVR ATtiny2313 shown.
Wiring and connecting the circuit board inside the intruder alarm.
Schematic drawing for intruder alarm; with AVR ATtiny2313.
It's always handy to have a few spare AVR microcontrollers.
Atmel AVR AT90S8515, ATmega8, ATtiny2313 and ATtiny15 microcontrollers.
Schematic drawing for the sound alarm controller; with AVR ATtiny2313. LEDs not included.
Schematic drawing for warning strobe light controller; with ATtiny2313.
Schematic drawing for home power consumption measuring unit; with AVR ATtiny2313 and MAX232.
Schematic drawing for the emergency strobe light module; with AVR ATtiny2313.
Schematic drawing for the security keypad module; with AVR ATtiny2313.
Circuit board in keypad module; containing ATtiny2313 microcontroller.
Showing the circuit board in keypad module with ATtiny2313 microcontroller.
Cabling between the microcontroller circuit board, keypad, connector and LEDs in keypad module.
Assembly finished; showing the inside of the keypad module. ATtiny2313 connected to the keypad.
A close look at the circuit board for the keypad, with ATtiny2313 microcontroller.
An inside look of the keypad module during assembly.
Circuit board in the emergency strobe, with ATtiny2313 and a couple of optocouplers.
Close up of the electronics in the emergency strobe, showing ATtiny2313, optocoupler, etc.
Inside the emergency strobe, circuit board connected to LEDs, switches and connectors.
Emergency strobe circuit board wired to LEDs, switches, connectors.
Circuit board is wired and mounted to the case lid on emergency strobe.
Lid on emergency strobe open, showing circuit board, wiring, LEDs, etc.
Inside the emergency strobe, the electronics on the left and LEDs on the right.
Schematic drawing showing a AVR ATtiny2313 with external crystal oscillator.
Schematic diagram of an AVR ATtiny2313 with 7 inputs and 8 outputs.
An inside view after everything has been fitted, ATtiny2313 microcontroller, voltage regulator and power transistors visible.
Circuit board in the warning strobe module. Everything connected.
Installing the circuit board and doing some final testing on the warning strobe controller.
Last check inside the unit before closing the lid, MAX232, ATtiny2313 and voltage regulator visible.
Inside of the module during assembly, ATtiny2313 microcontroller and voltage regulator installed.
A overview of the insides of the alarm disabling unit #2. Voltage regulator has heat-sink.
Schematic drawing for alarm disabling unit #2; with AVR ATtiny2313.
Some final testing of the circuit board before installing it in the box.
Schematic drawing for alarm disabling unit #1; with AVR ATtiny2313.
Circuit board with AVR ATTiny2313 ready to be installed in emergency strobe.
Electronics, computers, tech and other geeky stuff by Thomas Jensen aka Hebron
Content licensed under CC BY-SA 4.0.
Made in Norway
Deployed: 13 hours ago