The AVR AT90S8515 is to long that wires have to cross over it on the stripboard to get to the other side.
Aug 31 2017
The stripboard is cut to fit the box, and held in place in the grooves on the sides.
Crystal oscillator with ceramic capacitors on board for module heartbeat monitor.
Trimmer for LCD contrast adjustment on module heartbeat monitor.
Pull-up resistors for all 15 heartbeat signal inputs on the module heartbeat monitor board.
AVR AT90S8515 microcontroller on circuit board for module heartbeat monitor.
Inside the module heart beat monitor box.
Added three additional outputs, transistors in separate box.
Inside the car lights controller module.
Voltage regulator with heat sink on car lights controller circuit board.
4 channel PC817 optocoupler on car lights controller circuit board.
AVR ATtiny2313 microcontroller on car lights controller circuit board.
Inside the car lights controller, with additional output transistors in a separate box.
Buzzer on stripboard inside the rack status panel body.
Aug 30 2017
Power transistors on stripboard in junction box.
Apr 18 2006
Stripboard connected; 12V in, 5V out to Rpi. Darlington and pull-ups to the Rpi GPIO pins.
Aug 5 2017
Stripboard with voltage step-down, Darlington driver and pull-ups mounted in the box.
Testing a GPIO input on the Raspberry Pi Zero, 10k pull-up to 3.3V
Testing with Raspberry Pi Zero GPIO output connected to a Darlington driver, success again!
Aug 3 2017
Trying to power the Raspberry Pi Zero with the buck step-down converter, success!
Mounted the buck step-down converter and verifying the voltage levels.
Backside of the fireman alarm circuit board, started soldering components.
Aug 2 2017
Started soldering components to the fireman alarm circuit board, buck converter to the left.
Wiring to the push-buttons and LEDs on the electronic switch module.
Aug 1 2017
Power from the power jack goes through a diode and fuse before reaching the voltage regulator.
Closeup of the AVR ATtiny2313 in electronic switch module.
Inside the electronic switch module.
Inside the warning lights controller, with wires connected to pin headers.
Relay and diode soldered to stripboard inside a simple relay box.
LM35 temperature sensor on stripboard with capacitors to reduce signal noise.
Apr 12 2009
Extending the car lights controller with additional outputs.
May 19 2009
Circuit board for car lights controller, with AVR ATtiny2313 microcontroller and optocoupler.
Mar 4 2008
Working on the circuit board for the heartbeat monitor module.
Dec 30 2006
Started work on the circuit board for the heartbeat monitor module.
Inside mute and light controller for the rack box project.
Sep 17 2015
AVR ATtiny2313 microcontroller in mute and light controller.
Transistors with base resistors for the digital outputs.
AVR ATtiny2313 microcontroller and crystal on stripboard for mute and light controller.
Backside of the stripboard for mute and light controller.
Apr 20 2006
Testing the mute and light controller I/Os.
Soldering and threading wires to the stripboard.
May 6 2006
Fitted stripboard for the mute and light controller in its enclosure.
Inside the stack lights controller module.
Sep 18 2015
Stripboard with AVR microcontroller inside the stack lights controller.
Stripboard with transistors for outputs, inside the stack lights controller.
Stripboards with AVR microcontroller, resistors and transistors inside the stack lights controller.
Stripboards with AVR microcontroller and transistors inside the stack lights controller.
Inside the stack lights controller, with power transistors.
Apr 12 2006
Stripboard with AVR inside the lights controller module.
Transistors with base resistors on lights controller module board.
AVR Attiny2313 microcontroller and quartz crystal oscillator inside the lights controller module.
AVR Attiny2313 microcontroller inside the lights controller module.
Installing the lights controller in the rack box project.
May 24 2006
Inside of the monitoring module, the small card is a new input board as the first one I made didn't work.
Circuit board with AVR AT90S2313 microcontroller and crystal oscillator.
Circuit boards inside the monitoring module.
Transistors on a stripboard inside the monitoring module.
A small board with two optocouplers inside the monitoring module.
Circuit board with AVR AT90S2313 microcontroller in monitoring module.
Power board with fuses and voltage regulator in the monitoring module.
Electronics, computers, tech and other geeky stuff by Thomas Jensen aka Hebron
Content licensed under CC BY-SA 4.0.
Made in Norway
Deployed: 1 month ago