Just like the garage computer explosion of the 70’s through the 80’s, which brought us such things as Apple, pong, Bill Gate’s hair, and the proliferation of personal computers, the maker movement is the new garage hardware explosion. Today, 135 million adults in the United States alone are involved in the maker movement.
Enthusiasts who want to build the products they want, from shortwave radios to personal computers, and to tweak products they’ve bought to make them even better, have long been a part of the electronics industry. By all measures, garage-style innovation remains alive and well today, as “makers” as they are called continue to turn out contemporary gadgets, including 3D printers, drones, and embedded electronics devices.
Making is about individual Do-It-Yourselfers being able to design and create with tools that were, as of a decade or two ago, only available to large, cash-rich corporations: CAD tools, CNC mills, 3D printers, low-quantity PCB manufacturing, open hardware such as Arduinos and similar inexpensive development boards – all items that have made it easier and relatively cheap to make whatever we imagine. For individuals, maker tools can change how someone views their home or their hobbies. The world is ours to make. Humans are genetically wired to be makers. The maker movement is simply the result of making powerful building and communication tools accessible to the masses. There are plenty of projects from makers that show good engineering: Take this Arduino board with tremendous potential, developed by a young maker, as example.
The maker movement is a catalyst to democratize entrepreneurship as these do-it-yourself electronics are proving to be hot sellers: In the past year, unit sales for 3D printing related products; Arduino units, parts and supplies; Raspberry Pi boards; drones and quadcopters; and robotics goods are all on a growth curve in terms of eBay sales. There are many Kickstarter maker projects going on. The Pebble E-Paper Watch raises $10 million. The LIFX smartphone-controlled LED bulb raises $1.3 million. What do these products have in common? They both secured funding through Kickstarter, a crowd-funding website that is changing the game for entrepreneurs. Both products were created by makers who seek to commercialize their inventions. These “startup makers” iterate on prototypes with high-end tools at professional makerspaces.
For companies to remain competitive, they need to embrace the maker movement or leave themselves open for disruption. Researchers found that 96 percent of business leaders believe new technologies have forever changed the rules of business by democratizing information and rewiring customer expectations. - You’ve got to figure out agile innovation. Maybe history is repeating itself as the types of products being sold reminded us of the computer tinkering that used to be happening in the 1970s to 1990s – similar in terms of demographics, tending to be young people, and low budget. Now the do-it-yourself category is deeply intertwined with the electronics industry. Open hardware is in the center in maker movement – we need open hardware designs! How can you publish your designs and still do business with it? Open source ecosystem markets behave differently and therefore require a very different playbook than traditional tech company: the differentiation is not in the technology you build; it is in the process and expertise that you slowly amass over an extended period of time.
By democratizing the product development process, helping these developments get to market, and transforming the way we educate the next generation of innovators, we will usher in the next industrial revolution. The world is ours to make. Earlier the PC created a new generation of software developers who could innovate in the digital world without the limitations of the physical world (virtually no marginal cost, software has become the great equalizer for innovation. Now advances in 3D printing and low-cost microcontrollers as well as the ubiquity of advanced sensors are enabling makers to bridge software with the physical world. Furthermore, the proliferation of wireless connectivity and cloud computing is helping makers contribute to the Internet of Things (IoT). We’re even beginning to see maker designs and devices entering those markets once thought to be off-limits, like medical.
Image source: The world is ours to make: The impact of the maker movement – EDN Magazine
In fact, many parents have engaged in the maker movement with their kids because they know that the education system is not adequately preparing their children for the 21st century. There is a strong movement to spread this DIY idea widely. The Maker Faire, which launched in the Bay Area in California in 2006, underlined the popularity of the movement by drawing a record 215,000 people combined in the Bay Area and New York events in 2014. There’s Maker Media, MakerCon, MakerShed, Make: magazine and 131 Maker Faire events that take place throughout the world. Now the founders of all these Makers want a way to connect what they refer to as the “maker movement” online. So Maker Media created a social network called MakerSpace, a Facebook-like social network that connects participants of Maker Faire in one online community. The new site will allow participants of the event to display their work online. There are many other similar sites that allow yout to present yout work fron Hackaday to your own blog. Today, 135 million adults in the United States alone are involved in the maker movement—although makers can be found everywhere in the world.
7,076 Comments
Tomi Engdahl says:
https://hackaday.io/project/185040-8mm-film-scanner-v2
Tomi Engdahl says:
Cistercian wooden keyboard
Wooden keypad with cypher numerals.
https://hackaday.io/project/185247-cistercian-wooden-keyboard
Tomi Engdahl says:
Janktop IV
https://hackaday.io/project/185269-janktop-iv
An Open-source MINI-ITX laptop with full desktop GPU, CPU motherboard and RAM, as well as softline watercooling.
Tomi Engdahl says:
3D Print Finishing By Spraying Glazing Putty
https://hackaday.com/2022/05/10/3d-print-finishing-by-spraying-glazing-putty/
Tomi Engdahl says:
https://hackaday.com/2022/05/10/theory-practice-and-ducted-fans/
Tomi Engdahl says:
https://hackaday.com/2022/05/11/pitch-sequencer-turns-tascam-tape-deck-into-instrument/
The cool thing about magnetic tape is that by varying the speed at which you play it back, you can vary the pitch of the output. [Issac] decided to take advantage of this, executing a fancy digitally-controlled pitch mod on his Tascam Porta 02 tape deck.
The build uses a Raspberry Pi Pico, which employs PWM to control the speed of the tape drive’s motor. This is achieved with the use of an NPN transistor driven by the PWM output of the Pico. This allows accurate control of motor speed, and thus pitch.
https://www.instructables.com/Pitch-Sequencer-for-Tascam-Porta-02-PWM-Microcontr/
Tomi Engdahl says:
https://hackaday.com/2022/05/11/easy-network-config-for-iot-devices-with-rgbeacon/
Tomi Engdahl says:
https://hackaday.com/2022/05/11/hackaday-prize-2022-vintagephone-links-the-past-to-the-present-and-future/
Tomi Engdahl says:
https://hackaday.com/2022/05/11/caulking-gun-becomes-useful-press-tool-for-fuel-line-fittings/
Tomi Engdahl says:
https://hackaday.com/2022/05/11/summers-coming-let-mowerino-cut-your-grass/
Tomi Engdahl says:
Moss Microbial Fuel Cell
Harvesting electricity with the help of moss dwelling microorganisms!
https://hackaday.io/project/185108-moss-microbial-fuel-cell
Tomi Engdahl says:
https://hackaday.com/2022/05/12/making-a-concrete-pinhole-camera/
Tomi Engdahl says:
How to Make a Concrete Camera
https://www.instructables.com/How-to-make-a-Concrete-Camera/
Tomi Engdahl says:
Hackaday Prize 2022: Salvaged Pumps And Hoses Make A Neat Vacuum Pickup Tool
https://hackaday.com/2022/05/12/hackaday-prize-2022-salvaged-pumps-and-hoses-make-a-neat-vacuum-pickup-tool/
Anyone who’s ever assembled a PCB full of tiny SMD parts will have found that tweezers are not always the best tool when it comes to accurate positioning. Thin, flat components like microcontrollers can be awkward to pick up securely, while small resistors and capacitors have a tendency of snapping out of your tweezers’ grip and flying off into the sunset (or your carpet). Vacuum pickup tools can be a great help, but the most convenient models, with an electric air pump and a foot switch, can be a bit expensive. [sjm4306] shows that it doesn’t have to be that way: he built his “VacPen” mostly from reused components.
At the heart of the project is a little vacuum pump with a pen-like device hooked up to it through a flexible hose.
VacPen
https://hackaday.io/project/185300-vacpen
A DIY Vacuum Tweezer/Pickup Tool to help with manually picking up and placing tiny components
Tomi Engdahl says:
How The Roland 808 Cowbell Worked
https://hackaday.com/2022/05/12/how-the-roland-808-cowbell-worked/
Every generation has an instrument which defines its sound, and for those whose formative musical years lie in the 1980s, a very strong contender to the crown is the Roland TR-808 percussion synthesizer. Its sounds can be recognized across a slew of hits from that era and every decade since, and though the original instrument wasn’t a commercial success it remains accessible through sample packs, emulations, and clones. The 808 was an all-analogue device that didn’t use samples, thus [Mark Longstaff-Tyrrell] has been able to reproduce its distinctive cowbell sound with reference to some of the original circuitry.
http://www.frisnit.com/roland-tr-808-cowbell-rebuild/
Tomi Engdahl says:
https://muovia.com/kayttokohde/raataloidyt-tuotteet/
Tomi Engdahl says:
https://www.gyproc.fi/asentaminen/huolto-ja-kunnossapito/kipsilevyn-reikien-paikkaus
https://m.youtube.com/watch?v=lXJNspmfe2g
Tomi Engdahl says:
Tensegrity Explained
https://www.youtube.com/watch?v=0onncd0_0-o
Tensegrity (or tensional integrity, or floating compression) is really counterintuitive. These bizarre structures can be explained quite nicely with a 2D version (you know I love to explain things with a 2D versions!).
I found out after uploading that the Lego model is the creation of a YouTuber! Check out their channel: https://youtube.com/c/JKBrickworksVideo
Tomi Engdahl says:
PuppyPi Quadruped Robot
A quadrupted robot with first person vision powered by RasperryPi 4B
https://hackaday.io/project/181861-puppypi-quadruped-robot
Developed our own gait algorithm after taking examples from MIT and Stand Ford open source
8 coreless pwm servos enable 35cm/s ultimate speed
RasperryPi 4B and HD camera for AI recognition: Gestures, Colors, Faces, Voice and etc,
Galvanized grey aluminium alloy body
We developed robots in many shapes but dog, or quadruped robot. Dogs bring unique spiritual companionship to humans. Though easy to build a moderate structure, gait analysis and interact methods are big challenges. We want it vivid, physically and mentally.
8 coreless pwm motors may not make it that flexible as the one which has 12 or more. But it’s a start and we are quite surprised by PuppyPi’s speed and balance performance after we optimize our own gait algorithm again and again.
Wild angle HD camera for first person vision. Interaction requires gathering information, process information and respond. Real-time picture identification rely on both hardware and software training. Luckily we have accumulated a wealth of experience.
Tomi Engdahl says:
https://hackaday.com/2022/05/13/absolute-encoder-teardown/
https://www.sensortips.com/frequently-asked-question-faq/teardown-inside-an-industrial-absolute-encoder-faq/
Tomi Engdahl says:
https://hackaday.com/2022/05/13/round-lcds-put-to-work-in-rack-mount-gauge-cluster/
https://hackaday.com/2022/05/13/big-audio-visualizer-pumps-with-the-music/
Tomi Engdahl says:
Printable Fix For Time Card Clock Has Owner Seeing Red Again
https://hackaday.com/2022/05/14/printable-fix-for-time-card-clock-has-owner-seeing-red-again/
Tomi Engdahl says:
Who Is Thinking About Open Source Firmware?
https://hackaday.com/2022/05/14/who-is-thinking-about-open-source-firmware/
Yesterday, we ran a post on NVIDIA’s announcement of open-source drivers for some of its most recent video cards. And Hackaday being huge proponents of open-source software and hardware, you’d think we’d be pouring the champagne. But it’s trickier than that.
Part of the reason that they are able to publish a completely new, open-source driver is that the secrets that they’d like to keep have moved into the firmware. So is the system as a whole more or less open? Yeah, maybe both.
Tomi Engdahl says:
TapType: AI-Assisted Hand Motion Tracking Using Only Accelerometers
https://hackaday.com/2022/05/14/taptype-ai-assisted-hand-motion-tracking-using-only-accelerometers/
Tomi Engdahl says:
Balloon Guitar Is An Absolute Gas, Helium Or Not
https://hackaday.com/2022/05/14/balloon-guitar-is-an-absolute-gas-helium-or-not/
Guitars are most typically built out of wood. Whether it’s an acoustic guitar with a big open cavity, or a solid-body electric, there’s generally a whole lot of wood used in the construction. However, [Mattias Krantz] shows us that alternative construction methods are entirely possible, by building his own balloon guitar.
The balloon guitar still has a neck, bridge, and strings just like any other. However, in place of the resonant cavity of an acoustic guitar, there is provision to install a large balloon instead. It’s actually quite interesting to watch — with the balloon installed, the guitar delivers much more volume than when played without a resonant cavity at all.
I put Helium in my Guitar and now it’s a Ukulele?
https://www.youtube.com/watch?v=515eUjWlBgI
Tomi Engdahl says:
Running ARM Chips On Algae Power
https://hackaday.com/2022/05/14/running-arm-chips-on-algae-power/
Tomi Engdahl says:
Upcycling A Flat Bed Scanner
https://hackaday.com/2022/05/15/upcycling-a-flat-bed-scanner/
[Piffpaffpoltrie] had a 20-year-old Acer flatbed scanner that they just couldn’t justify keeping. But it does seem a shame to throw away a working piece of gear. Instead, the old scanner became a light table. We’ll admit, as projects go, it isn’t the most technically sophisticated thing we’ve ever seen, but we do think it is a worthy way to upcycle something that would otherwise be filling up a landfill.
The scanner was old enough to have a CCFL light source inside. However, it was too small, so it came out along with many other components that may yet find use in another project. If you didn’t know , scanners are good sources for small stepper motors, straight rods, and first-surface mirrors.
The Metamorphosis of an Old Flat Bed Scanner
https://www.instructables.com/The-Metamorphosis-of-an-Old-Flat-Bed-Scanner/
Tomi Engdahl says:
https://hackaday.com/2022/05/15/e-paper-clock-displays-things-in-a-battery-friendly-manner/
Tomi Engdahl says:
Vicious Little Desktop Shredder Pulverizes Plastic Waste
https://hackaday.com/2022/05/15/vicious-little-desktop-shredder-pulverizes-plastic-waste/
We’ve all likely seen video of the enormous industrial shredders that eat engine blocks for lunch and spit out a stream of fine metal chips. The raw power of these metal-munching monsters is truly fearsome, and they appear to be the inspiration for SHREDII, the miniature plastic shredder for at-home recycling of plastic waste.
The fact that SHREDII isn’t all that large doesn’t make it any less dangerous, at least to things smaller and softer than engine blocks, like say fingers. The core of the shredder is a hexagonal axle carrying multiple laser-cut, sheet steel blades. The rotating blades are spaced out along the axle so they nest between a bed of stationary blades; rotating the common axle produces the shearing and cutting action needed to shred plastic.
DIY Shredder Recycles 3D Printed Waste Into Plastic Injection Pellets
https://www.youtube.com/watch?v=qoxxyttw3HQ
Tomi Engdahl says:
https://hackaday.com/2022/05/15/light-whiskers-from-soap-bubbles-is-real-science/
Tomi Engdahl says:
https://hackaday.com/2022/05/15/3d-printing-hack-leverages-vase-mode-structurally/
Tomi Engdahl says:
https://hackaday.com/2022/05/14/attack-of-the-magnetic-slime-robots/
Tomi Engdahl says:
https://hackaday.com/2022/05/15/hackaday-links-may-15-2022/
Another one from the “Why didn’t I think of that?” files — contactless haptic feedback using the mouth is now a thing. This comes from the Future Interfaces Group at Carnegie-Mellon and is intended to provide an alternative to what ends up being about the only practical haptic device for VR and AR applications — vibrations from off-balance motors. Instead, this uses an array of ultrasonic transducers positioned on a VR visor and directed at the user’s mouth. By properly driving the array, pressure waves can be directed at the lips, teeth, and tongue of the wearer, providing feedback for in-world events. The mock game demonstrated in the video below is a little creepy — not sure how many people enjoyed the feeling of cobwebs brushing against the face or the splatter of spider guts in the mouth. Still, it’s a pretty cool idea, and we’d like to see how far it can go.
https://www.figlab.com/research/2022/mouth-haptics
Tomi Engdahl says:
100V to 18V Brushless Rotary Hammer Drill Conversion | BOSCH PBH 160R
https://www.youtube.com/watch?v=wk49StdTXvU
This video will show you step by step the process of converting a rotary hammer drill from AC100V to DC18V power tools. The original tool is designed for AC 100V power source. The problem with this power tool is that the switch is broken. It’s hard to find that part in our country. One more thing is the power source, I need to use a 220V to 110V converter to run this tool. Cordless is easier than corded power tools, which is why I decided to convert this tool to a cordless power tool.
Components list
* DC Brushless 18V
-DC 12V: no-load current 1.55A no-load speed 12500 rpm
-DC 18V: no-load current 2.25A no-load speed 18800 rpm
-DC 21V: no-load current 2.75A no-load speed 22000 rpm
* Makita 18 Battery
* Makita battery adapter
Tomi Engdahl says:
Easy Drywall Tricks to Fix Any Mistake
https://www.youtube.com/watch?v=BUcT5LHmA7w
Uncommon Tricks to Fish Wire Through Walls and Ceilings Quickly | How To
https://www.youtube.com/watch?v=rQWTiD2LOjI
Tomi Engdahl says:
You Only NEED 2 POWER TOOLS!! (Here’s What They Are…2 MOST IMPORTANT Power Tools)
https://www.youtube.com/watch?v=g4qnbxy8Oys
Viewers always want to know which power tools I think they should absolutely have. DIYers are overwhelmed with power tool choices! But, if you’re a DIYer, I really think YOU ONLY NEED 2 POWER TOOLS! That’s what we’re talking about in this episode of The Honest Carpenter.
Tomi Engdahl says:
I Built a See Through Wall to REALLY Test StudFinders
https://www.youtube.com/watch?v=aQPD0Kp96Dc
We tested a bunch of stud finders to see which ones perform best on all types of walls with all types of wires, studs and pipes behind the wall
Tomi Engdahl says:
How To MOD / HACK Change ANY Switch Mode Power Supply Output Voltage. An SMPS Tutorial Guide.
https://www.youtube.com/watch?v=77EoJz7YjwY
Damn I need a 14V Power pack (wall wart) for this Samsung Monitor, but I only have 12V Supplies! Learn how to change the output voltage on any switch mode power supply.
IMPORTANT:
1. Do NOT try to increase the output voltage above the maximum rating of the output capacitors (probably 16V on a 12V supply and 10V on a 5V supply). The maximum voltage will be marked on the output capacitors so have a look.
2. Make sure you change the label on the PSU to state the new voltage output – because, believe me, you will forget that you modified it
00:00:00 Chapter 1 – Intro
00:00:44 Chapter 2 – The Problem
00:01:13 Chapter 3 – The Guinea Pig
00:02:55 Chapter 4 : DANGER!! DANGER!! HIGH VOLTAGE
00:04:21 Chapter 5 – How The Circuit Works
00:12:08 Chapter 6 – The Solution
Tomi Engdahl says:
How I MAKE a PREMIUM Pallet GUITAR
https://www.youtube.com/watch?v=C825cMYBm6k
In this new video I am going to create a premium guitar with recycled material, 2 pallets and some olive wood scraps. It’s going to be a PRSish guitar.
In this video you can see the entire process of building the guitar, from start to finish, with very detailed shots.
I hope you enjoy it.
Tomi Engdahl says:
The Hair Dryer Monitor Fix
https://hackaday.com/2022/05/16/the-hair-dryer-monitor-fix/
[Johnny] had a monitor that he was particularly fond of. The whole monitor appeared dead, and he decided to open it up and find out what could be wrong. He wound up fixing it — sort of — using a hairdryer. While we think his explanation of the problem is unlikely, we hate to armchair quarterback, and we applaud that he opened it up and got it working.
When something is dead, it is always a good idea to check the power and power supply, but that didn’t pan out in this case. In fact, the power supply board inside had what looked like reasonable voltage values throughout. The problem had to be something more subtle.
There was a time when it was easy to work on consumer gear and it was relatively easy to get the schematics. These days everything is tiny, hard to replace if you can find the replacements, and service documentation is rare. But you can still get lucky sometimes. You just have to try.
https://johnnys.news/2022/05/How-i-fixed-my-broken-monitor-with-a-hair-dryer
Tomi Engdahl says:
Gaming Mouse Becomes Digital Camera
https://hackaday.com/2022/05/16/gaming-mouse-becomes-digital-camera/
Ever since the world decided to transition from mechanical ball mice to optical mice, we have been blessed with computer pointing devices that don’t need regular cleaning and have much better performance than their ancestors. They do this by using what is essentially a tiny digital camera to monitor changes in motion. As we’ve seen before, it is possible to convert this mechanism into an actual camera, but until now we haven’t seen something like this on a high-performance mouse designed for FPS gaming.
For this project [Ankit] is disassembling the Logitech G402, a popular gaming mouse with up to 4000 dpi. Normally this is processed internally in the mouse to translate movement into cursor motion, but this mouse conveniently has a familiar STM32 processor with an SPI interface already broken out on the PCB that could be quickly connected to in order to gather image data. [Ankit] created a custom USB vendor-specific endpoint and wrote a Linux kernel module to parse the data into a custom GUI program that can display the image captured by the mouse sensor on-screen.
Hacking Logitech G402 Mouse to make a Camera!
https://qcentlabs.com/posts/g402_hack/
Tomi Engdahl says:
https://qcentlabs.com/posts/mimxrt1010/
Tomi Engdahl says:
Mikä tahansa vaihde 5 sekunnissa! Hieno DIY-idea!
https://www.youtube.com/watch?v=TXl9yUAiQ8g
Tomi Engdahl says:
Minamil: a minimal CNC mill. And friends.
https://hackaday.io/project/174370-minamil-a-minimal-cnc-mill-and-friends
Each axis: ̶$̶5̶ ̶$̶8̶ $10 motor+lead screw, 3x LM6UU, 3x 6mm x 100mm rod, 1/8in hardboard, PC case screws
Developing a cheap small 3-axis CNC mill for $̶1̶0̶$15/axis.
Powered by:
$̶5̶̶ $̶8̶ $10 motor+lead screw CH-SM1545 (price rising – hello supply risk)
Linear bearing cost minimum at 6mm (smaller costs more)
1/8in hardboard is practically free per small area
#6-32 x 1/4in computer case screws are practically free
3x 6mm x 100mm rods per axis can be $1 each or 6mm rod is common in printers etc.
It’s working.
Older version:
Minamil: a minimal CNC mill – HaDPrize 2021
https://hackaday.io/project/181173-minamil-a-minimal-cnc-mill-hadprize-2021
Minamil: a minimal 3-axis CNC mill that works. Build from laser-cut hardboard with a screwdriver (mostly). Mill fine-pitch PCBs.
A capable cheap compact 3-axis CNC mill for ~$15/axis.
Designed for building your own from ready-to-assemble parts & few simple tools. Structural parts laser cut from 1/8″ (3mm) hardboard/HDF. No fabrication needed for working parts – only make a rough, loosely dimensioned frame from available material. Footprint can be smaller than a sheet of paper.
Mill 3D parts from real materials and PCBs with fine-pitch features down to limit of cutter size+runout.
Z axis clamp holds your general-purpose rotary tool.
Tomi Engdahl says:
VacPen
https://hackaday.io/project/185300-vacpen
A DIY Vacuum Tweezer/Pickup Tool to help with manually picking up and placing tiny components
I’ve been getting into designing tiny boards with smaller and smaller components that are tightly packed together so here’s a tool I’ve designed to help me manipulate those minuscule micros and transfer those tiny transistors!
Tomi Engdahl says:
3D printing in wood
Using wood waste to create 3D prints
https://hackaday.io/project/185329-3d-printing-in-wood
This project aims to take wood flour (and other ground hard organics such as nut shells) and turn this into usable products through 3D binder jet printing. The final goal is to create useful products with as much renewable and bio-degradable content as possible.
The project makes use of binder jetting 3D printing (also called 3DP), which prints parts layer by layer in powder. Every layer an inkjet printhead is used to locally bind the powder into the part. The printer used for most testing is: https://hackaday.io/project/86954-oasis-3dp
Tomi Engdahl says:
Transparent Framedeck Is Clearly Capable
https://hackaday.com/2022/05/17/transparent-framedeck-is-clearly-capable/
When the universe tells you to build a cyberdeck, then build a cyberdeck you must. The lucky [Richard Sutherland] got an email from user-serviceable laptop purveyors Framework about the availability of their main board for use as a single-board computer. They agreed to send him a laptop and some extra modules as long as he promised to build something awesome with it. There was just one fabulous caveat: whatever design he came up with had to be released to the public.
[Richard] took this capable board with four USB ports and built an all-in-one that pays homage to the slab-style computers like the TRS-80 Model 100, which [Richard] really wanted as a kid. It looks lovely in layered acrylic and brass, and even though we pretty much always think that see-through is the best design choice you can make, transparency really works here. Tucked into those layers is a custom 36-key split running on an Elite-C microcontroller with Gazzew Boba U4 Silent-but-tactile switches, and a trackball in between. Be sure to take the build tour and check out all the process pictures.
https://github.com/brickbots/framedeck/
Tomi Engdahl says:
Nanovolt Meter Requires Careful Design For Accuracy’s Sake
https://hackaday.com/2022/05/17/nanovolt-meter-requires-careful-design-for-accuracys-sake/
Tomi Engdahl says:
https://hackaday.com/2022/05/18/sunrise-keyboard-looks-the-part/
Tomi Engdahl says:
ESP Soil Moisture Sensor
ESP8266 based soil moisture sensor Wi-Fi enabled.
https://hackaday.io/project/12843-esp-soil-moisture-sensor
ESP8266 based soil moisture sensor Wi-Fi enabled. Also provide ambient temperature and humidity sensor.
At the sensor’s heart is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3.3V logic. This microcontroller contains a Tensilica chip core as well as a full WiFi stack. You can program the microcontroller using the Arduino IDE for an easy-to-run Internet of Things core. You can use ESP8266 flasher that an upload code at a blistering 115200 baud for fast development time. It also has auto-reset so no noodling with pins and reset button pressings.
The sensor can upload sensor datas to remote server. We provided example code for uploading to thingspeak.