Category Archives: sensor

Flexible PCB Contest Round Up

The 2019 Hackaday Prize, which was announced last week, is very much on everyone’s mind, so much so that we’ve already gotten a great response with a lot of really promising early entries. As much as we love that, the Prize isn’t the only show in town, and we’d be …read more

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Posted in actuator, coils, contests, digikey, flex board, Flexible PCB Contest, Kapton, osh park, POV, sensor, wearable | Leave a comment

Flex PCBs Make Force-Mapping Pressure Sensor for Amputee

What prosthetic limbs can do these days is nothing short of miraculous, and can change the life of an amputee in so many ways. But no matter what advanced sensors and actuators are added to the prosthetic, it has to interface with the wearer’s body, and that can lead to …read more

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Posted in amputee, contests, flexible circuit board, matrix, misc hacks, multiplexer, pic, piezoresistive, prosthetic, sensor, shift register, transducer, velostat | Leave a comment

Make a Non-Contact Voltage Probe

You’ve probably seen probes that detect live wires in, for example, home wiring, without having to actually probe the wire. These are sometimes used to test strings of Christmas lights, too. We’ve even seen the sensors built into a voltmeter. [Crazy Couple] has a few do-it-yourself versions that can do …read more

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Posted in non-contact voltage, sensor, tool hacks, voltage sensor | Leave a comment

Sensor-Laden Pigeons Gather Data For Urban Weather Modeling

When it comes to gathering environmental data in real-world settings, urban environments have to be the most challenging. Every city has nooks and crannies that create their own microenvironments, and placing enough sensors to get a decent picture of what’s going on in all of them is a tough job. …read more

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Posted in climate, data, drone, logger, misc hacks, pigeon, science, sensor, UAS, urban, weather | Leave a comment

New Part Day : A sensor chip for 3D color X-Ray imaging

We all know CERN as that cool place where physicists play with massive, superconducting rings to smash atoms and subatomic particles to uncover secrets of matter in the Universe. To achieve this aim, they need to do a ton of research in other areas, such as development of special particle detectors.

While such developments are essential to the core research needs of the Centre, they also lead to spinoff applications for the benefit of society at large. One such outcome has been the Medipix Collaborations – a family of read-out chips for particle imaging and detection that can count single …read more

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Posted in counter, detector, gamma ray, gamma ray detector, Hackaday Columns, hardware, New Part Day, photon, sensor, x-ray, x-ray imaging | Leave a comment

Three-Conductor Pivot for E-Textiles is Better Than Wires

Pivots for e-textiles can seem like a trivial problem. After all, wires and fabrics bend and flex just fine. However, things that are worn on a body can have trickier needs. Snap connectors are the usual way to get both an electrical connection and a pivot point, but they provide only a single conductor. When [KOBAKANT] had a need for a pivoting connection with three electrical conductors, they came up with a design that did exactly that by using a flexible circuit board integrated to a single button snap.

This interesting design is part of a solution to a specific …read more

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Posted in copper tape, diy, e-textile, flexible PCB, hall effect, Kapton, pivot, sensor, textile, wearable, wearable hacks | Leave a comment

Color Sensor Demystified

When [millerman4487] bought a TCS230-based color sensor, he was expecting a bit more documentation. Since he didn’t get it, he did a little research and some experimentation and wrote it up to help the rest of us.

The TCS3200 uses an 8×8 array of photodiodes. The 64 diodes come in four groups of 16. One group has a blue filter, one has green and the other has a red filter. The final set of diodes has no filter at all. You can select which group of diodes is active at any given time.

Sixteen photodiodes have blue filters, 16 photodiodes …read more

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Posted in arduino, Arduino Hacks, color, photodiode, sensor | Leave a comment

Howto: Docker, Databases, and Dashboards to Deal with Your Data

So you just got something like an Arduino or Raspberry Pi kit with a few sensors. Setting up temperature or motion sensors is easy enough. But what are you going to do with all that data? It’s going to need storage, analysis, and summarization before it’s actually useful to anyone. You need a dashboard!

But even before displaying the data, you’re going to need to store it somewhere, and that means a database. You could just send all of your data off into the cloud and hope that the company that provides you the service has a good business model …read more

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Posted in analysis, dashboard, docker, grafana, IoT, Raspberry Pi, sensor | Leave a comment

Hacking The ZH03B Laser Particle Sensor

Laser particle detectors are a high-tech way for quantifying whats floating around in the air. With a fan, a laser, and a sensitive photodetector, they can measure smoke and other particulates in real-time. Surprisingly, they are also fairly cheap, going for less than $20 USD on some import sites. They just need a bit of encouragement to do our bidding.

[Dave Thompson] picked up a ZH03B recently and wanted to get it working with his favorite sensor platform, Mycodo. With a sprinkling of hardware and software, he was able to get these cheap laser particle sensors working on his Raspberry …read more

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Posted in CP2102, environmental monitoring, green hacks, laser hacks, Mycodo, particulates, parts, pollution, sensor | Leave a comment

Low-Quality Capacitors Turned Into High-Quality Temperature Sensors

When life hands you a bunch of crummy capacitors, what do you do? Make a whole bunch of temperature sensors, apparently.

The less-than-stellar caps in question came to [pyromaniac303] by way of one of those all-in-one assortment kits we so love to buy. Stocked with capacitors of many values, kits like these are great to have around, especially when they’ve got high-quality components in them. But not all ceramic caps are created equal, and [pyromaniac303] was determined not to let the lesser-quality units go to waste. A quick look at the data sheets revealed that the caps with the Y5V …read more

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Posted in capacitor, ceramic, dielectric, misc hacks, rc, sensor, temperature, temperature coefficient, Y5V | Leave a comment