20 Results for "air quality"

Bat Sonar
Project by Filip Mulier
Bat like sonar sensor that can track multiple targets and estimate angle of arrival using chirps and cross correlation in near real time.
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Magnificent Moisture Management
Project by Michael Haas
I've got a balcony, tomatoes and a micro controller
- 31
- 7

Marauder's Map
Project by John Boyd
A real life player tracking system, that will give users access to a map of everyone else in the area.
- 521
- 66

New bird in town
Log from Hacking Nature’s Musicians
I've temporarily relocated the physical form of Hacking Nature's Musicians to the other-worldly environment of Tortuga Escondida (near Akumal, Mexico) for a one-month fellowship on los musicos de la selva. Thankfully, my supplies made it through...

What is Lora
Log from Jebel: Off Grid Communications
What is Lora: Lora is a proprietary system designed by Semtech. According to them: LoRa is a proprietary spread spectrum modulation scheme that is derivative of Chirp Spread Spectrum modulation (CSS) and which trades data rate for sensitivity within...

Pico LoRa Expansion is Finally Out! Supports 868MH
Details from Pico LoRa Expansion is Finally Out! Supports 868MH
After launch of Pico RP2040 Microcontroller there are several Pico Add-ons, HATs & Expansions arrived in the global market, But this time SB Components Launched First Ever LoRa™ Expansion for Pico. SB Components...

Capacitive Soil Moisture Sensor
Log from Sensors Based on the Padauk RFC Peripheral
One curious type of sensor that can be realized with simple means is a soil moisture sensor to monitor wether plants need to be watered. A simple way of achieving this is to measure the soil resistivity with two electrodes. Unfortunately that is not...

Sensors to consider!
Log from conscientious koala
To note with these gas sensors: we'd want a fan to get good ambient air flow into the enclosure containing the sensors! PM 2.5 Nova PM Sensor SDS011 (0.3 to 10μm) https://components101.com/sensors/nova-pm-sensor-sds011-pinout-features-working-applications-datasheet ...

LoRa
Hacker page by Christoph Tack
LoRa Why LoRa? Gray coding, data whitening, interleaving, forward error correcting is all done in the transceiver chip. CSS (Chirp Spread Spectrum) : Resilience to interferencePerformance at low powerResistance to multi-path fadingResistance to Doppler...

Audible Freq Sonar with the Stellaris Launchpad
Details from Audible Freq Sonar with the Stellaris Launchpad
Over the last year I've been working towards an underwater sonar system for ROVs and surface boats. In order to learn the basic signal processing required to detect the echoes, I initially got a simple sonar working in air with a desktop conferencing...

Smart Plant
Details from Smart Plant
Overview The Smart Plant was designed to be flashed with the ESPHome firmware, however it can be directly programmed through Arduino or ESP-IDF. And since the code is yours, so it's the data you gather, stream it to your Home Assistant server and automate...

Tools & Equipment
Log from Chicken Road Labs
Measuring Tools: Steel Ruler, 12″Folding Carpenters RuleMicrometerLong TapeSpring DividersInside & Outside calipersVernier Caliper (Digital and Analog) Layout and Marking Tools: CompassCombination ToolSliding T-bevelPunchesChalk LineAwl Squares: Carpenter's...

DIY Soil Moisture Sensor with E-Ink Display
Details from DIY Soil Moisture Sensor with E-Ink Display
Greetings to all! Today I want to tell you about one of my projects, this is a soil moisture sensor with a small screen on electronic ink, the sensor works on a battery, can send data over the air to some of the Smart Home systems. This project is a...

Phased array pulse design
Hacker page by null1
Continuous wave or CW First a couple of links to some background explanations: Link: Radar tutorial on CW Link: Radar tutorial on range resolution CW pulse CW pulse consist of a constant frequency and a duration (pulse length). Range resolution...

Designing and building add-ons
Log from MI/O
1. USB power supply and a reading light USB power supply add-on gerber rendering: I added two additional solder pads (power isolation jumper) to enable the power indicator LED. Some may need it, some not. Reading light add-on gerber rendering: The LED...

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