#3-axis accelerometer

[addohaislam2000]

3-axis accelerometer, Accelerometer sensor application, vibration sensors

LIS2MDL Series 3.6V 50 Hz High Performance 3-Axis Digital Magnetic Sensor-LGA-12

[dnny2nile]

https://www.futureelectronics.com/p/semiconductors--analog--sensors--accelerometers/lis2mdltr-stmicroelectronics-5090146

3-Axis Digital Magnetic Sensor, 3 axis accelerometers, Mems accelerometers

LIS2MDL Series 3.6V 50 Hz High Performance 3-Axis Digital Magnetic Sensor-LGA-12

[bizarremachinist]

Capstone #6: Solid

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CAD is nearly done, and the design is 95% there. There's still some improvements to be made. Big 'ol hand to our CAD team especially for bringing this to life. Lets explore under the cut

There's 2 main parts of this thing. The main body has the fans and wheels. The gantry on top does all the doodling. Let's pop the top off.

The cover and walls are purely aesthetic and keeps the dust out. Originally the cover is held on using snap buttons, but that's been changed to the tiniest magnets pocket change can buy. The base plate is made from thin wood, or we've been exploring carbon fiber (but that's proven to be mad expensive for basically no gain. Like 400+$ expensive).

The wheels are servos, the fans sit side by side and run off wall outlet power. (Try making these drone motors that normally run off batteries, and make them run off a wall outlet. Sounds easy right? Good luck. It's been a time doing it. They eat something like 12-16v at 40-60+ amps... *each*). It's got tiny nubs on the bottom to stabilize it, because with only 2 wheels, it's going to want to rock side to side. It'll have some distance sensors on the sides to find where it is on the wall, and an accelerometer to find how it's tilted. I'm personally a little worried the vibrations from the fans will make the accelerometer unreliable, but we'll find out about that later. The whole thing will be controlled by an Arduino Mega.

Smooving over to the gantry, both axis will be on rails purchased from Igus. The rails are made from hard anodized aluminum, while the carriages are made from diecast zinc and some slippery bearing plastic. It's then pulled around by timing belts and steppers. We modified both axis a tad by reducing the rail size to the smallest ones Igus offers, and giving the horizontal axis 2 rails for more stability (The bearing situation on the timing belts were improved too)

The printer head uses an electro-magnet to pull the pen down. There are guide pins with springs to, well, guide and spring return the head. There are also stop screws that set the maximum engagement and disengagement. (The travel distance is kinda exaggerated here tho. The actual travel distance will be as little as possible. Like 3-4mm)

All in all, the bot body is something like 300 x 500mm, 60mm thick (+ 55mm for the fan tails), with a print area of 150 x 150mm. We've tried to cut as much weight as possible, and are looking at about 1.2kg or a little lighter than a small toaster

As a bonus pic, here's an early concept. This one uses a lead screw for the X, and a shaft and timing belt for the Y. If you're wondering what stops the axis from pivoting, it would have been some gibs located behind both axis. Commonly used on dovetails, a gib is when you intentionally design in a large gap between your mating surfaces, and shove a thin plate in there with setscrews to take up the slack. Look at the ways of basically any milling machine or lathe, and chances are you'll see one!

[addohaislam2000]

3 Axis Digital Accelerometer, accelerometer wireless, Accelerometer pedometer

2 x 2 x 1 mm 12 Bit ±2g/4g/8g/16g I2C/SPI 3 Axis Digital Accelerometer - LGA-12

[americangeophysicalunion]

Gaging an Underwater Waterfall

Dear AGU,  

Ground water venting from sublacustrine karst sinkholes in the Laurentian Great Lakes has unique properties: high dissolved salt (including sulfate) from wafting through Paleozoic marine evaporites, low oxygen due to microbial respiration during the long sub-terranean transit, and a low and steady millennium-average aboveground temperature of ~9oC. At the Middle Island Sinkhole (Lake Huron), groundwater that is denser than the overlying lake water fills the bottom of a ~23 m deep, 10 m wide bowl-shaped nearshore sinkhole. It then spills over the bowl’s sill at ~14 m into the amphitheater-like wider lake floor that is at ~ 25 m – a vertical drop of ~9 m – as an underwater waterfall! Here, the high-sulfur, low-oxygen waterfall – whose flow rate is yet to be quantified – nurtures a dynamic photo- and chemosynthetic microbial mat world. 

            To deepen our understanding of this underwater waterfall (other than the fun fact that divers could have fun sliding down the fall), we deployed 2 tilt-meters (Lowell Instruments TCM-1) equipped with a 3-axis accelerometer + magnetometer for continuously logging flow rate and direction: one at the edge of the sill and the other in the middle of the fall (inset) – already leaning in the direction of flow. Wonder what secrets the time-series data will reveal when we retrieve the tilt-meters next year: Is the flow steady or erratic? Do peak flows coincide with overland precipitation events? Are flow rate and mat growth in synch? How vulnerable are mat ecosystems to the vagaries of groundwater flux as the climate overhead changes?

— Phil Hartmeyer, NOAA-Ocean Exploration; Cassandra Sadler, Andi Yoxsimer, NOAA-Thunder Bay National Marine Sanctuary; Steve Ruberg, NOAA-Great Lakes Environmental Research Laboratory; Bopi Biddanda, GVSU-Annis Water Resources Institute, Michigan.

[stevebattle]

ATOM humanoid robot by Dan Mathias (2010), FutureBots, West Palm Beach, Florida. ATOM (Advanced Technology for Optimizing Motion) is handmade from aluminium, titanium & carbon fibre, and has over 49 degrees of freedom. Advanced humanoid features include articulated toe segments, and an articulated torso that contributes to standing and balance control. Sensors include a stereo vision system, the Microsoft Kinect depth sensor, a 3-axis gyroscope and accelerometer, a 6-axis foot sensor, and touch feedback in its independently articuated fingers. “It can be very friendly looking and, like humans, it will be able to respond with facial expressions. … ATOM was designed and built on a budget compared with the other great walking robots out there in the world. I was designer, builder and programmer for the project with some hand and body prototyping help from my brother, Jack, a machinist and graphic designer. … One of my main reasons for building ATOM, and many of my other robots is, to inspire a new generation of young engineering minds to design and build robots – and have fun.” – Dan Mathias interview with Tom Atwood, Leading Edge Robotic News (LERN), ROBOT magazine, March/April 2010.

[quartz-components]

GY-511 module includes a 3-axis accelerometer and a 3-axis magnetometer. This sensor can measure the linear acceleration at full scales of ± 2 g / ± 4 g / ± 8 g / ± 16 g and magnetic fields at full scales of ± 1.3 / ± 1.9 / ± 2.5 / ± 4.0 / ± 4.7 / ± 5.6 / ± 8.1 Gauss. When you place this module in a magnetic field, according to the Lorentz law, a current is induced in its microscopic coil. The compass module converts this current to the differential voltage for each coordinate direction by calculating these voltages, you can calculate the magnetic field in each direction and obtain the geographic position. It communicates using I2C communication protocol and the voltage level required to power this device is 3V-5V. You can use it in DIY GPS system, accelerometer data acquisition system to be used in Vehicles etc.

[howzitsa]

Huawei Watch Fit 2 Midnight Black 1.74-inch HUAWEI FullView Display | Bluetooth Calling | Durable Battery Life Dimensions: 46 × 33.5 × 10.8 mm *Product size, product weight, and related specifications are theoretical values only. Actual measurements between individual products may vary. All specifications are subject to the actual product. Wrist Size: Active Edition: 130 – 210 mm Classic Edition: 140 – 210 mm Weight: Active Edition: Approximately 26 g (strap excluded) Classic Edition: Approximately 30 g (strap excluded) *Product size, product weight, and related specifications are theoretical values only. Actual measurements between individual products may vary. All specifications are subject to the actual product. Display: Size: 1.74 inches AMOLED color screen Resolution: 336 × 480 pixels, PPI 336 Watch Case Active Edition Material Front case: polymer Rear Case: polymer Classic Edition Material Front case: aluminum Rear case: polymer Watch Strap Active Edition Midnight Black Silicone Strap Sakura Pink Silicone Strap Isle Blue Silicone Strap Classic Edition Nebula Gray Leather Strap Moon White Leather Strap Sensors 9-axis IMU sensor (Accelerometer sensor, Gyroscope sensor, Geomagnetic sensor) Optical heart rate sensor Button Full screen touch, side button Charging Port Magnetic charging thimble System Requirements Android 6.0 or later iOS 9.0 or later Waterproof Level 5 ATM water-resistant *Devices complying with the 5 ATM-rated water have a water resistance rating of 50 meters under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. However, they should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. For details of waterproof precautions, please refer to: https://consumer.huawei.com/za/support/how-to/newbie-guide/en-us00738723 Connectivity Active Edition NFC Not Supported Bluetooth 2.4 GHz, supports BT5.2 and BR+BLE Classic Edition NFC Supported Bluetooth 2.4 GHz, supports BT5.2 and BR+BLE Microphone: Supported Environment Ambient Operating Temperature: -10 ℃ – +45 ℃ Charging Charger Voltage and Current Requirements 5V/1A Battery Life Typical usage: 14 days Default settings are used, 30 minutes of Bluetooth calling per week, 30 minutes of audio playback per week, heart rate monitoring and sleep tracking are enabled, 30 minutes of exercise per week, message notification is enabled (50 SMS messages, 6 calls, and 3 alarms per day), and the screen is turned on 200 times per day. Heavy usage: 7 days Default settings are used, 30 minutes of Bluetooth calling per week, 30 minutes of audio playback per week, heart rate monitoring and HUAWEI TruSleep™ are enabled, 60 minutes of exercise per week, message notification is enabled (50 SMS messages, 6 calls, and 3 alarms per day), and the screen is turned on 500 times per day. *Based on results from HUAWEI lab tests. The actual usage may vary depending on product differences, user habits, and environment variables. Speaker: Supported In The Box Watch × 1 Charging Cradle (including the charging cable) �� 1 Quick Start Guide & Safety Information & Warranty Card × 1 *The preceding specifications are theoretical values based on product design. To provide accurate product information, specifications, and features, HUAWEI may make real-time adjustments to the preceding specifications, so that they match the product performance, specifications, indexes, and components of the actual product. Product information is subject to such changes and adjustments without notice.

[functional-movementpatterns]

Sure! Here's a human-like, engaging blog post on "Wearable Fitness Trackers", with headings, persuasive tone, and detailed information. Total character count: approx. 2400 characters.

Track Your Way to Better Health with Wearable Fitness Trackers

In today’s fast-paced world, staying on top of your health can feel like a challenge. But what if you had a personal health assistant on your wrist? That’s exactly what wearable fitness trackers offer — real-time, 24/7 monitoring to help you stay active, focused, and in control of your wellness journey.

Let’s break down the key components that make these gadgets more than just trendy accessories. Here's what powers your progress:

1. Accelerometer

The heart of movement tracking, the accelerometer detects motion and orientation in 3D space. It counts your steps, monitors your sleep cycles, and gauges overall activity levels. Most fitness trackers use a 3-axis accelerometer to provide accurate data throughout your day.

Dosage: Always on — you wear it, and it works in the background to collect and analyze your movement data.

2. Heart Rate Sensor

Using photoplethysmography (PPG) technology, this sensor measures your heart rate by shining a light into your skin to detect blood flow changes. It helps track your resting heart rate, workout intensity, and even stress levels.

Dosage: Continuously monitors at rest and during activity — with peaks during cardio workouts.

3. GPS Module

For those who love running or cycling outdoors, the GPS module tracks distance, speed, and routes in real-time. Whether you're mapping your morning jog or planning a hike, this feature keeps your performance stats accurate.

Dosage: Activated during outdoor activities — minimal battery usage when off.

4. Sleep Tracker

Sleep is a cornerstone of health. The sleep tracker combines accelerometer and heart rate data to analyze your sleep stages — light, deep, and REM. This helps you understand your sleep quality and make adjustments to improve rest and recovery.

Dosage: Works automatically during nighttime or sleep mode.

5. Blood Oxygen Sensor (SpO2)

The SpO2 sensor monitors your blood oxygen saturation — a vital sign of respiratory health. It’s especially useful during workouts or at high altitudes and can even help detect signs of sleep apnea.

Dosage: Spot checks or nightly tracking, depending on the model.

Why You Should Get One Today

Stay Motivated: Set goals, celebrate milestones, and compete with friends.

Live Healthier: Monitor your progress and adapt your habits accordingly.

Peace of Mind: Track vitals that help detect early signs of stress, fatigue, or illness.

Final Thoughts

A wearable fitness tracker is more than a gadget — it’s your smart, silent coach. Whether you're a beginner trying to walk more or a fitness enthusiast aiming to optimize performance, there's a tracker for you.

Invest in your health — strap on a tracker and let every step count. 🏃‍♂️💓⌚

Want help choosing the right tracker? Drop a comment below or contact us — we’re happy to guide you!

"Want to stay informed? Visit our website for the latest news and updates on this subject."

[christanworkshop]

Building Custom HomeKit Devices

Have you ever caught yourself thinking, “I wish there was a HomeKit device that could do this…”? Yeah, same here. For me, it was wishing my washer-dryer could send a notification when the laundry’s done. See, it’s out in the yard—so if you’re chilling in the living room with the TV on, you’d never hear the washing machine’s faint beep of completion.

Luckily, I had a few ESP32s and sensors collecting dust in a drawer, so I thought: Why not build one myself? With a little help from AI, of course. I’ve been bouncing between Gemini 2.5 Pro, Grok, and ChatGPT, and they’ve been surprisingly great sidekicks. Sure, I could’ve sat down and studied all the libraries and frameworks properly—it might’ve taken me a couple of days tops (I’ve been around the programming and electronics block a few times). But thanks to AI, I hacked together a working prototype in just a few hours.

Now, this isn’t a tutorial—that’s coming soon once I’ve fine-tuned everything and properly tested my DIY HomeKit setup. This is more of a quick peek behind the curtain. A little show and tell.

For the build, I used an ESP32-S3 WROOM-1 (N16R8) and an MPU6050 3-axis accelerometer. Total cost? Around 7 bucks. Hooking up the sensor via I2C was simple enough. When any of the AIs got confused or hit a wall, I just tag-teamed between them until I got what I needed.

And here’s the result after just a few hours of tinkering—Apple’s Home app picked up my custom HomeKit device without a hitch. The best part? Seeing “ChrisTan Workshop” proudly listed as the manufacturer. Cracked me up. Nothing like a bit of DIY flair baked right into the Home app!

Here’s a quick rundown of how the magic works: the MPU6050 accelerometer monitors for vibrations. If it detects continuous movement for more than 20 seconds, we assume the washing machine is doing its thing and mark it as “running.” Once it stays still for over 3 minutes, we take that as a sign that the laundry’s done. These timings—and a few other parameters—are all configurable. I’m still fine-tuning them to match the quirks of my Electrolux washer dryer.

One of the trickier parts (and where all the AIs struggled a bit) was figuring out how to send a proper HomeKit notification. After some back-and-forth, we found a clever workaround: register the device as a doorbell. That way, when the laundry finishes, my HomePod mini chimes and a notification pops up like someone’s at the door. Not exactly elegant, but hey—it works! I just wish HomeKit gave us more flexibility with custom notifications, but I get it… Apple’s probably trying to prevent spammy alerts from rogue accessories.

That’s it for now. Eventually, I want to make this whole thing easily user-configurable—no coding required. But for the moment, a few parts are still hard-coded under the hood.

[lansitec]

LoRaWAN Smart Card Badges Tracker | Construction Worker Tracking

Achieve seamless personnel and asset tracking with the Lansitec Badge Tracker. Combining GNSS, Bluetooth 5.0, and LoRaWAN technology, this sleek device provides accurate real-time positioning both indoors and outdoors—perfect for managing workforce, visitors, and critical assets across large facilities. The built-in 3-axis accelerometer intelligently detects movement or falls, conserving battery when the device is idle and alerting you to unauthorized or emergency situations. With a maximum of five months standby time and no additional network fees, the Badge Tracker offers a cost-effective, high-precision solution for securing sensitive areas, optimizing resource usage, and improving operational workflows.

For More visit our site:

[nursingwriter]

¶ … Childhood Trauma and Risk for Chronic Fatigue Syndrome: Association with Neuroendocrine Dysfunction." Heim, C., Nater, U.M., Maloney, E., Boneva, R., Jones, J.F., & Reeves, W.C. What did the researchers want the study to determine? The researchers wanted to determine if there was a correlation between childhood trauma and the eventual development of chronic fatigue syndrome (CFS) by examining neuroscience and looking for evidence related to the pathophysiology of the disease. Health Outcome of Interest: What health condition did the researchers study? The researchers studied chronic fatigue syndrome. Exposure(s) of Interest: What factors did the researchers investigate to determine an association with the outcome listed above? There may be more than one. Researchers looked at patients with childhood trauma and those with CFS. They looked at the neuroendocrine system including the hypothalamic-pituitary-adrenal axis and other neurodendocrine dysfunctions. 5. Participants: Whom did the researchers study? How many? 113 patients with CFS and 124 control patients were surveyed from a population of 19,381 Georgian resident adults. 6. Study design: What type of epidemiological study design -- observational or experimental -- does the study describe? Why? This was an experimental study in that measurements of saliva were taken but also observational based upon the surveys returned by the patients. 7. Type(s)/Method(s) of Data Collection: What type(s) or method(s) were used to collect the data for the study? (E.g. questionnaire, medical records) The study was a survey where participants either with or without CFS were questioned about their current lives as well as past traumas they experienced. This was coupled with examination of the individuals' endocrine systems including taking samples of salvia and testing for cortisol. 8. Results/Main Findings of Study: What were the results of the study? What were the conclusions of the researchers? Researchers found that those with CFS largely reported having experienced childhood trauma. At the same time, children with concurrent trauma were found to be more likely to develop the condition due to developmental issues relating to the endocrine system. Article 2 "Effect of Impact Exercise on Bone Metabolism." Vainionpaa, A., Korpelainen, R., Vaananen, H., Haapalahti, J., Jamsa, T., & Leppaluoto, J. 2. Research Question: What did the researchers want the study to determine? The researchers wanted to investigate what were the long-term effects of high-impact exercise in patients with bone turnover and calciotropic hormones. 3. Health Outcome of Interest: What health condition did the researchers study? The patients investigated were dealing with bone metabolism related to being premenopausal. 4. Exposure(s) of Interest: What factors did the researchers investigate to determine an association with the outcome listed above? There may be more than one. Factors investigated in the research were turnover markers PINP or TRACP5b. They also looked at low scrum basal PTH levels during and after high-impact exercise. 5. Participants: Whom did the researchers study? How many? The researchers used 120 women who were randomly assigned to either an exercise group or a control group. 6. Study design: What type of epidemiological study design -- observational or experimental -- does the study describe? Why? The study was largely observational because the researchers used data gathered from meters including examination of the bone markers and calciotropic hormones. 7. Type(s)/Method(s) of Data Collection: What type(s) or method(s) were used to collect the data for the study? (E.g. questionnaire, medical records) The researchers used an accelerometer to measure the daily impact and ensure a mean was found. From there, researchers looked at bone turnover markers at the start of the experiment, at the 6-month mark and then at the end of the year-long study. 8. Results/Main Findings of Study: What were the results of the study? What were the conclusions of the researchers? Researchers were unable to determine if there was any effect on treatment of patients in the bone turnover markers tested. There was a noted difference in scrum basal PTH levels which leads researchers to conclude that continuous body training will achieve the best bone benefits. Works Cited Heim, C., Nater, U.M., Maloney, E., Boneva, R., Jones, J.F., & Reeves, W.C. (2009). Childhood trauma and risk for chronic fatigue syndrome: association with neuroendocrine dysfunction. Archives of General Psychiatry. 66(1), 72-80. Retrieved from http://proquest.umi.com.ezp.waldenulibrary.org/pqdweb?index=1&did=1638100591&SrchMode=1&sid=1&Fmt=3&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1259947230&clientId=70192 Vainionpaa, A., Korpelainen, R., Vaananen, H., Haapalahti, J., Jamsa, T., & Leppaluoto, J. (2009). Effect of impact exercise on bone metabolism. Osteoporosis International, 20(10), 1725 -- 1733. Retrieved from: http://proquest.umi.com.ezp.waldenulibrary.org/pqdweb?did=1853287521&sid=15&Fmt=6&clientId=70192&RQT=309&VName=PQD Read the full article

[addohaislam2000]

Wireless accelerometer, USB accelerometer, Accelerometer sensor application

LIS2MDL Series 3.6V 50 Hz High Performance 3-Axis Digital Magnetic Sensor-LGA-12

[the-hiking-camp]

How to Choose the Right Pedometer for Seniors

As we age, maintaining an active lifestyle becomes increasingly important. A pedometer can be an excellent tool for seniors to track their daily steps, encourage movement, and monitor their fitness goals. However, selecting the right pedometer requires careful consideration of features that cater specifically to senior users. Below, we explore the key factors to consider when choosing the best pedometer for seniors.

1. Ease of Use: Simple Interface and Large Display

Seniors often prefer user-friendly devices with large, easy-to-read displays. When choosing a pedometer, look for:

Big, bold numbers that are easy to see.

Minimal buttons to avoid confusion.

Simple setup without the need for a smartphone or complex syncing.

A clear, backlit screen can also be beneficial, especially for users with vision impairments.

2. Accuracy: Reliable Step Counting

The primary function of a pedometer is to count steps accurately. Look for devices that use advanced sensors, such as tri-axis accelerometers, which provide more precise readings than older mechanical pedometers. Features to consider include:

Automatic stride length adjustment.

Error correction technology to minimize miscounts.

Ability to distinguish between real steps and accidental movements.

3. Wearability: Comfortable and Convenient Design

Seniors should choose a pedometer that is comfortable to wear and does not interfere with their daily activities. Common options include:

Clip-on pedometers, which attach to clothing and are easy to access.

Wrist-worn pedometers, which function similarly to fitness bands and provide additional comfort.

Pendant-style devices, ideal for those who prefer not to wear a wristband.

Ensure that the device is lightweight and has a durable build.

4. Battery Life: Long-Lasting and Low Maintenance

A pedometer with a long battery life minimizes the hassle of frequent charging. Consider:

Replaceable coin-cell batteries, which can last several months.

Rechargeable options with extended battery life of at least a week per charge.

Energy-efficient displays that extend battery duration.

5. Additional Health Tracking Features

Many modern pedometers offer extra health-related functions beneficial for seniors, such as:

Heart rate monitoring to keep track of cardiovascular health.

Calorie tracking to assist in weight management.

Distance measurement to provide insights into daily movement patterns.

Sedentary reminders to encourage regular activity throughout the day.

6. Connectivity: Syncing and Data Storage

Some seniors may prefer a pedometer that syncs with a smartphone app for detailed insights. Others might opt for a standalone device. Features to consider include:

Bluetooth connectivity for syncing with mobile devices.

Memory storage to track steps over several days.

Offline usability, ensuring that the device functions independently without needing a connection.

7. Durability: Strong Build and Water Resistance

A pedometer should be sturdy enough to withstand daily wear and tear. Consider devices that are:

Shock-resistant to survive accidental drops.

Water-resistant or splash-proof to handle exposure to sweat or light rain.

8. Price and Value for Money

Seniors should look for pedometers that offer the best balance between affordability and features. While basic models may be available for under $20, advanced options with additional tracking capabilities can range from $50 to $100.

9. Customer Reviews and Brand Reputation

When purchasing a pedometer, it is important to check:

User reviews, particularly from other seniors.

Brand reputation and customer service support.

Warranty policies, ensuring protection against defects.

Top Recommended Pedometers for Seniors

Here are some highly-rated pedometers that cater to the needs of seniors:

Omron HJ-321 Tri-Axis Pedometer — Offers precise step counting with an easy-to-read display.

Fitbit Inspire 2 — Provides step tracking, heart rate monitoring, and smartphone syncing.

3DFitBud Simple Step Counter — A no-frills, easy-to-use pedometer ideal for seniors.

OZO Fitness SC 3D Pedometer — Features a compact design with a large screen and reliable accuracy.

Realalt 3DTriSport Walking Pedometer — Supports multiple tracking metrics with excellent battery life.

Final Thoughts

Choosing the right pedometer for seniors involves considering ease of use, accuracy, wearability, battery life, and additional health features. Whether you prefer a simple step counter or a feature-rich tracker, there are plenty of options to fit your needs. Prioritize comfort, durability, and ease of reading to ensure a positive experience.