A series of projects using commonly available microcontrollers and microprocessors.
Raspberry PI configured as portable Software Defined Radio system.
Interfacing micro computers with real world applications. Using the PI as UHF remote digital radio receiver.
Reliability and endurance testing 24/7.
Comparative testing between two different types.
Tuning the hardware for testing.
Main controller unit.
Also check out the ATTiny Morse Code callsign generator. It uses an eight pin Amitel low power AVR. It is so small it can be built into a microphone if required.
ATtiny morse code callsign generator schematic.
Video of the operational prototype
Going down to the core, the falconry telemetry transceiver. This is a full stack project, from hardware design, through firmware and software development. A very compact SMD smart falconry transmitter is about as small as I can go soldering these small components.
Pieces of the prototype puzzle for the proof of concept.
If you can see it, you can solder it. It is said.
Placing components on a micro PCB design.
The 'smart' part of the falconry telemetry transceiver.
Using an Arduino Nano with a passive infrared sensor to powerLED strips via a pulse width modulated field effect transistor. Slow fade in and automatically power off after 60 seconds. Also works great for staircases and ambient room lighting. The added benefit of PWM is that the LED strips consume a lot less power with nearly unnoticeable drop in light intensity. Adding a Light dependent resistor as sensor ensures it only activates at low light levels, like at night.
Smart ceiling lighting with RGB LED strips.
Smart under bed lighting using LDR, PIR and PWM driven LED strip.
Same technology for the staircase lighting.
Floor based decor LED lighting using PWN.
Arduino on euroboard with the passive infrared sensor, testing the 12 to 5 volt buck PSU..
Making multiple units as they are needed in more places in the home.
Power field effect transistor used to pulse the LED strip at low frequency.
Initial testing with a LED strip on the headboard only.
How the smart PWM LED lighting works
NOTE: During testing using variable pulse width modulation to turn the LEd strips on and off at frequency of 100Hz I noticed that at 80 percent duty cycle the power consumption dropped by 33% while the light intensity dropped by 5%. That is a major power saving! Tip for anyone running LEDs on DC, place a PWM running at a ratio of 80% on and 20% off and you will save a load on current used. An additional gain is that there is no heat generated, again a saving of waisted energy.
Convenient smart lighting that saves energy in more ways than one.