🌬ventilates ❄️cools 🦠disinfects 💦no moisture
• fresh air supply
• disinfects the breathed air
• removes excess moisture and heat
• remains effective due to lower humidity
• your glasses do not mist up
• does not reduce performance as much as a regular veil in sports.
• thanks to the Czech Nano-Filter you are protected by 99,79%
ABOUT THIS MASK
The CoolerUV Mask is a smart respiratory mask with active heat and moisture removal and germicidal UV-C LED. This mask is driven by a microcontroller running a Circuit Python code which controls the inner climate by a temp. sensor, controlling the integrated fan and UV-C LED which disinfects the breathed air. The user can change the operating mode by itself by touching one of the integrated touch sensors. An integrated fan, controlled by a microcomputer with a temperature sensor, blows air into the space between the drapes. This ensures the supply of fresh air, which has been cleaned of by a germicidal UV-C LED from possible microbiological contamination. Excess-blown air escapes through the side gaps, removing heat and moisture from inside the drape. This helps maintain a more pleasant climate and, by reducing humidity, prolongs the effectiveness of the facemask. In addition, the inner filter layer is made of a Nano fabric (a Czech invention), which provides even more protection (for example when the battery is empty it still keeps protecting you). This filter can be replaced as needed, in case of dirt or sweating, and the filter is washable by 30°C in a common washing machine (like the rest of the mask, after removing the electronics). The rest of the drape remains intact. To disinfect the mask all the attached parts and electronics can be removed and placed in a cold disinfection bath (the electronics resist wetting, it works again after drying, but DO NOT SUBMERGE THE FAN) the rest of the mask can be normally washed in the washing machine by 30°C using a disinfectant detergent (eg for sportswear). Alternatively, the drape can be placed in a water UV bath or UV sterilizer for a few hours and then washed with regular laundry. The fan doesn’t need to be washed, just wipe off the dust, or you can place it in a UV-Sanitizer.
This mask is in the testing phase, by getting this mask you agree to become a tester. Therefore, this mask is not yet certified for medical use. Using this face mask is at your own risk. The certificate process is running, but the function of the mask is proved by a long-term test (running since June 2020) and some laboratory tests. If you decide to make the mask yourself, please contact us to provide feedback so that we can improve this product.
The O2 prototype is extended with some clever functions, such as LED light intensity control according to ambient light, germicidal UV LED control, as well as control measurement of body temperature on the wrist (in case of exceeding the limit temperature, an acoustic signal with red indicator diodes will sound). These functions require a higher class of Circuit Playground Express microcontroller.
Do you want this mask? You can find a step-by-step tutorial including the Code which is published for free. If you are not able to assemble this mask, contact me and I can send you an actual prototype of this mask – in this case, you pay only the hardware needed for the mask and the transportation costs.
Notice – because of Covid_19 and the Russia-Ukraine War, there are supply shortages for the hardware and currently, no microcontrollers can be ordered. I am sure, this will not last longer than a few weeks.
MODIFICATIONS
This mask is variable and can be modified in many ways. The basic mask is powered by a power bank connected by a 1.5m USB cable.
The extended model has a inner pocket for a 1500mAh battery with a charging module (latest model, testing since March 2022). Another tests are running with a Wireless charging module (so no cables are needed), and for super hot conditions an extension with a Peltier Module (model – Stay Cool by Peltier), which turns the mask into a Air Conditioned smart mask.
The newer masks with the Circuit Express Microcontroler have also some party modes (color reactive to musik), Bluetooth connectivity an color mood modes (for example light up your mask in the colors of Ukraine to show support against World War III).
Software description:
After switching on the power supply or switching the switch to the ON position, the software initialization (pin check, debug, setting A2 / A1 to false) starts, the indicator diode lights up and the fan spins. Initialization is indicated by the color transition of the system LED on the microcontroller. In the case of Circuit Express, a starting melody will sound. When the initialization is completed, the software sends a signal to stop the fan and the system LED lights up green. Then the system is in operation and the processor receives data from the temperature sensor. Depending on the temperature, it either switches on or leaves the fan off.
Pin A2 (A5 in the case of Circuit Express) is a touch pin and is used to manually start the fan operation. Touch activates, a longer touch (3sec.) Switches from manual to automatic mode again. In manual mode, the system LED lights up purple, together with the fan indicator LED.
Active operation. When the set upper value is exceeded (depending on the software version), the fan is activated, the fan indicator LED lights up and the system LED changes to purple.
Passive operation. When the set lower value is exceeded (depending on the software version), the fan deactivates, the indicator LED goes out and the system LED switches to green.
The UV-C LED is still in operation. Optionally, this LED can be connected to the fan data circuit. This will control the operation of the germicidal LED by operating the fan.
import time
import board
import touchio
import adafruit_dotstar
import microcontroller
microcontroller.cpu.temperature
# Red, green, blue, and simple mixes of 2 or 3.
# Add your own choices here.
COLORS = (
(0, 255, 0),
(0, 0, 255),
(255, 0, 0),
(0, 255, 255),
(255, 255, 0),
(255, 0, 255),
(255, 255, 255),
def on_temperature_condition_changed_hot_celsius():
pins.A1.digital_write(True)
pixel.set_color(0xff00ff)
input.on_temperature_condition_changed(TemperatureCondition.HOT,
38,
TemperatureUnit.CELSIUS,
on_temperature_condition_changed_hot_celsius)
def on_touch_d1_long_click():
pins.A1.digital_write(False)
pixel.set_color(0x00ff00)
input.touch_d0.on_event(ButtonEvent.LONG_CLICK, on_touch_d0_long_click)
def on_touch_d1_click():
pins.A1.digital_write(True)
pixel.set_color(0xff00ff)
input.touch_d0.on_event(ButtonEvent.CLICK, on_touch_d0_click)
def on_temperature_condition_changed_cold_celsius():
pins.A1.digital_write(False)
pixel.set_color(0x00ff00)
input.on_temperature_condition_changed(TemperatureCondition.COLD,
23,
TemperatureUnit.CELSIUS,
on_temperature_condition_changed_cold_celsius)
for index in range(256):
pixel.set_color(pixel.hsv(index, 255, 255))
pause(100)
pins.A1.digital_write(False)
pixel.set_color(0x00ff00)
input.onLightConditionChanged(LightCondition.Bright, function () {
light.setBrightness(210)
})
input.onLightConditionChanged(LightCondition.Dark, function () {
light.setBrightness(47)
})
music.setVolume(20)
music.powerUp.playUntilDone()
forever(function () {
if (input.temperature(TemperatureUnit.Celsius) > 40) {
light.showRing(
`blue black black black blue blue black black black blue`
)
} else if (false) {
} else {
pins.A1.digitalWrite(true)
}
if (input.temperature(TemperatureUnit.Celsius) <= 37) {
light.showRing(
`blue black black black green red black black black purple`
)
} else {
pins.A1.digitalWrite(false)
}
})
The very first prototype – the IONIC mask, an absolute fail 🙂
The O2 prototype using a mini PC fan
Some closer looks to the M0 microchip, the Nano UV-C LED, 3D Printed valves and other parts
