USB infrared receiver looks good sitting in your livingroom: "USB infrared receiver looks good sitting in your livingroom"
'via Blog this'
Jun 29, 2013
1,200 hours of work results in the smallest v12 engine
1,200 hours of work results in the smallest v12 engine: "1,200 hours of work results in the smallest v12 engine"
'via Blog this'
'via Blog this'
Letting Bluetooth take the wires out of your headphones
Letting Bluetooth take the wires out of your headphones: "Letting Bluetooth take the wires out of your headphones"
'via Blog this'
'via Blog this'
Add Wireless Charging to Your Smartphone
Add Wireless Charging to Your Smartphone: "Add Wireless Charging to Your Smartphone"
'via Blog this'
'via Blog this'
Inverter 12V DC til 230 Volt AC med arduino | TechMind beta
Inverter 12V DC til 230 Volt AC med arduino | TechMind beta: "Inverter 12V DC til 230 Volt AC med arduino"
'via Blog this'
'via Blog this'
Jun 28, 2013
Open source Programmable Logic Controller | Embedded projects from around the web
Open source Programmable Logic Controller | Embedded projects from around the web: "Open source Programmable Logic Controller"
'via Blog this'
'via Blog this'
Jun 26, 2013
Four Channel Arduino LCD Voltmeter
Four Channel Arduino LCD Voltmeter: "Analog channels A2 to A5 on an Arduino Uno are used to measure four different voltages. The measured voltages are displayed on a 16 character by 2 line LCD.
The four channel Arduino multimeter can measure four independent DC voltages that can each be in the range of 0 to 50V.
Voltages are displayed with one decimal place, e.g. 5.3V, 12.8V, etc.
This video shows the Arduino voltmeter being used to measure the voltage of four batteries. Each battery has a different voltage.
"
'via Blog this'
The four channel Arduino multimeter can measure four independent DC voltages that can each be in the range of 0 to 50V.
Voltages are displayed with one decimal place, e.g. 5.3V, 12.8V, etc.
This video shows the Arduino voltmeter being used to measure the voltage of four batteries. Each battery has a different voltage.
"
'via Blog this'
Jun 13, 2013
MCP23017 - i2c 16 input/output port expander ID: 732 - $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
MCP23017 - i2c 16 input/output port expander ID: 732 - $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits: "MCP23017 - i2c 16 input/output port expander "
'via Blog this'
'via Blog this'
Dual H-Bridge Motor Driver for DC or Steppers - 600mA - L293D ID: 807 - $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Dual H-Bridge Motor Driver for DC or Steppers - 600mA - L293D ID: 807 - $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits: "Dual H-Bridge Motor Driver for DC or Steppers - 600mA - L293D "
'via Blog this'
'via Blog this'
Peltier Thermo-Electric Cooler Module+Heatsink Assembly - 12V 5A ID: 1335 - $34.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Peltier Thermo-Electric Cooler Module+Heatsink Assembly - 12V 5A ID: 1335 - $34.95 : Adafruit Industries, Unique & fun DIY electronics and kits: "Peltier Thermo-Electric Cooler Module+Heatsink Assembly - 12V 5A -
ID: 1335
"
'via Blog this'
ID: 1335
"
'via Blog this'
Carambola2 portable Dropbox uploader
Carambola2 portable Dropbox uploader:
Saulius has been working on this project to use the Carambola2 dev board for portable Dropbox uploading. This eliminates the need for a PC, allowing pictures from a webcam be to uploaded directly using the dev board’s built-in WiFi.
You can read Saulius’ article on his blog at Lukse.lt.
Via the contact form.
Saulius has been working on this project to use the Carambola2 dev board for portable Dropbox uploading. This eliminates the need for a PC, allowing pictures from a webcam be to uploaded directly using the dev board’s built-in WiFi.
Sometimes it’s overkill to use computer with 200W power consumption for 24/7 to do small task like upload picture from webcam to Dropbox every minute. In this article I will describe how save a lot of Watts and to have Carambola on Cloud!
You can read Saulius’ article on his blog at Lukse.lt.
Via the contact form.
NEW PRODUCTS – Keyfob 2-Button and Single Button RF Remote Controls – 315MHz
NEW PRODUCTS – Keyfob 2-Button and Single Button RF Remote Controls – 315MHz:
NEW PRODUCTS – Keyfob 2-Button and Single Button RF Remote Controls – 315MHz – These keyfob remotes go with our three basic 315MHz RF receiver modules. They will work with all of them, sending out one or two commands that match up with either the last two of four outputs or, the first output on the receiver. They’re small and light weight and will work up to 50-100 meters away depending on line-of-sight and obstructions. Since these are just transmitters, if you have multiple receivers, it will turn all of them on and off at the same time (there is no sub-addressing).
A matching RF receiver is not included, you’ll need to purchase one in addition!
In stock and shipping now!
NEW PRODUCTS – Keyfob 2-Button and Single Button RF Remote Controls – 315MHz – These keyfob remotes go with our three basic 315MHz RF receiver modules. They will work with all of them, sending out one or two commands that match up with either the last two of four outputs or, the first output on the receiver. They’re small and light weight and will work up to 50-100 meters away depending on line-of-sight and obstructions. Since these are just transmitters, if you have multiple receivers, it will turn all of them on and off at the same time (there is no sub-addressing).
A matching RF receiver is not included, you’ll need to purchase one in addition!
In stock and shipping now!
Logging a Flight Path With an Adafruit Ultimate GPS Module
Logging a Flight Path With an Adafruit Ultimate GPS Module:
We carry a few different GPS modules here in the Adafruit shop, but none that satisfied our every desire – that’s why we designed this little GPS breakout board. We believe this is the Ultimate GPS module, so we named it that. It’s got everything you want and more
In Stock and Shipping Now!
Window seat on the flight meant I got to try my adafruit serial GPS unit and log the whole flight as gpx. twitter.com/technomancy/st…
— Phil Hagelberg (@technomancy) June 1, 2013
We carry a few different GPS modules here in the Adafruit shop, but none that satisfied our every desire – that’s why we designed this little GPS breakout board. We believe this is the Ultimate GPS module, so we named it that. It’s got everything you want and more
In Stock and Shipping Now!
IN STOCK – BeagleBone Black
IN STOCK – BeagleBone Black:
IN STOCK – BeagleBone Black. If you liked the BeagleBone, you will love the next gen BeagleBone Black! With a blistering 1GHz processor, 512MB onboard DDR3 RAM, built in 2GB storage with pre-installed Linux operating system (no microSD card required!), and best of all, the addition of a MicroHDMI connector for audio/video output. This is a ultra-powered embedded computer that can fit in a mint tin. Note: As of June 4, 2013, 1pm ET Adafruit is shipping Rev A5B.
Comes with a mini B cable for powering it up ASAP. No microSD card is included as the BBB now has onboard flash storage.
We’ll be filling in with more information on supported accessories as we test them for compatibility. For now we suggest picking up a 5V 2A power supply and a micro-HDMI cable. If you want to use it ‘head-less’, a USB console cable is suggested as the ‘Black does not have an onboard USB-to-Serial converter like the original BeagleBone
If you need a nice display to go along with your ‘Bone, Check out our fine selection of HDMI displays, we’ve tested all of them with the Beagle Bone Black
In stock and shipping now!
IN STOCK – BeagleBone Black. If you liked the BeagleBone, you will love the next gen BeagleBone Black! With a blistering 1GHz processor, 512MB onboard DDR3 RAM, built in 2GB storage with pre-installed Linux operating system (no microSD card required!), and best of all, the addition of a MicroHDMI connector for audio/video output. This is a ultra-powered embedded computer that can fit in a mint tin. Note: As of June 4, 2013, 1pm ET Adafruit is shipping Rev A5B.
Comes with a mini B cable for powering it up ASAP. No microSD card is included as the BBB now has onboard flash storage.
We’ll be filling in with more information on supported accessories as we test them for compatibility. For now we suggest picking up a 5V 2A power supply and a micro-HDMI cable. If you want to use it ‘head-less’, a USB console cable is suggested as the ‘Black does not have an onboard USB-to-Serial converter like the original BeagleBone
If you need a nice display to go along with your ‘Bone, Check out our fine selection of HDMI displays, we’ve tested all of them with the Beagle Bone Black
In stock and shipping now!
.:NEW PRODUCT - MicroSD Breakout Board:.
.:NEW PRODUCT - MicroSD Breakout Board:.:
Need to store a lot of data? This breakout board will let you add a micro SD card to your next project giving you up to 2Gb of storage. So be it temperature readings for six years or pulse lengths for seven the choice is yours.
More Details (HERE)
Need to store a lot of data? This breakout board will let you add a micro SD card to your next project giving you up to 2Gb of storage. So be it temperature readings for six years or pulse lengths for seven the choice is yours.
Features:
- Uses only 3 or 4 digital pins for upto 2Gb of storage
- Onboard 5v – 3v level shifting means no need to worry about hurting your SD card
- 0.1" pin spacing means it's breadboard compatible.
More Details (HERE)
.:NEW PRODUCT - Motion Detector (PIR):.
.:NEW PRODUCT - Motion Detector (PIR):.:
Interested in sensing movement? This PIR (Passive Infra-red) motion detector is the answer. Simply supply it with power then it will toggle the signal pin when motion is detected. Use it to log movement, play a sound, or as part of a diy alarm system the possibilities are endless.
More Details (HERE)
Interested in sensing movement? This PIR (Passive Infra-red) motion detector is the answer. Simply supply it with power then it will toggle the signal pin when motion is detected. Use it to log movement, play a sound, or as part of a diy alarm system the possibilities are endless.
Features:
- Easy to implement (only 3 wires)
- Large sensing range. (~5m)
.:NEW PRODUCT - Pressure, Temperature & Altitude Sensor (BMP085):.
.:NEW PRODUCT - Pressure, Temperature & Altitude Sensor (BMP085):.:
A great low cost barometric pressure sensor. Use it to monitor weather changes, or altitude (as pressure varies with altitude). It also includes an on board temperature sensor helping make it a great sensor for overall environmental monitoring.
More Details (HERE)
A great low cost barometric pressure sensor. Use it to monitor weather changes, or altitude (as pressure varies with altitude). It also includes an on board temperature sensor helping make it a great sensor for overall environmental monitoring.
Features:
- Three in one sensor (pressure, altitude temperature)
- On board support circutry means wiring is easy (only 4 wires)
- Great included library (means using it is super simple)
NEW PRODUCT – GA1A12S202 Log-scale Analog Light Sensor
NEW PRODUCT – GA1A12S202 Log-scale Analog Light Sensor:
NEW PRODUCT – GA1A12S202 Log-scale Analog Light Sensor. Upgrade a project that uses a photocell with the GA1A12S202 analog light sensor. Like a CdS photo-cell, the sensor does not require a microcontroller, the analog voltage output increases with the amount of light shining on the sensor face. This sensor has a lot of improvements that make it better for nearly any project.
The biggest improvement over plain photocells is a true log-lin relationship with light levels. Most light sensors have a linear relationship with light levels, which means that they’re not very sensitive to changes in darkened areas and ‘max’ out very easily when there’s a lot of light. Sometimes you can tweak a resistor to make them better in dark or bright light but its hard to get good performance at both ends. This sensor is logarithmic over a large dynamic range of 3 to 55,000 Lux, so it has a lot of sensitivity at low light levels but is also nearly impossible to “max out” so you can use it indoors or outdoors without changing code or calibration. Since the sensor is fabricated on a chip, there are also fewer manufacturing variations, so you won’t have to calibrate the sensor from one board to another.
Using the sensor is easy as pie: connect the Vin to 2.3-6VDC, Gnd to ground and measure the analog output on OUT. It will range up to 3V (at extremely bright outdoor sunlight). On an Arduino, just use analogRead() with the OUT pin connected to an analog pin. For more information including graphs, power consumption, etc check out the datasheet in the Tech Details tab. On this breakout we placed a 68KΩ resistor from OUT to ground to turn the current into a voltage.
GA1A1S202WP Datasheet
NEW PRODUCT – GA1A12S202 Log-scale Analog Light Sensor. Upgrade a project that uses a photocell with the GA1A12S202 analog light sensor. Like a CdS photo-cell, the sensor does not require a microcontroller, the analog voltage output increases with the amount of light shining on the sensor face. This sensor has a lot of improvements that make it better for nearly any project.
The biggest improvement over plain photocells is a true log-lin relationship with light levels. Most light sensors have a linear relationship with light levels, which means that they’re not very sensitive to changes in darkened areas and ‘max’ out very easily when there’s a lot of light. Sometimes you can tweak a resistor to make them better in dark or bright light but its hard to get good performance at both ends. This sensor is logarithmic over a large dynamic range of 3 to 55,000 Lux, so it has a lot of sensitivity at low light levels but is also nearly impossible to “max out” so you can use it indoors or outdoors without changing code or calibration. Since the sensor is fabricated on a chip, there are also fewer manufacturing variations, so you won’t have to calibrate the sensor from one board to another.
Using the sensor is easy as pie: connect the Vin to 2.3-6VDC, Gnd to ground and measure the analog output on OUT. It will range up to 3V (at extremely bright outdoor sunlight). On an Arduino, just use analogRead() with the OUT pin connected to an analog pin. For more information including graphs, power consumption, etc check out the datasheet in the Tech Details tab. On this breakout we placed a 68KΩ resistor from OUT to ground to turn the current into a voltage.
GA1A1S202WP Datasheet
- Power with 2.3-6V
- Onboard 68K load resistor for max 3V analog output
- 0.2 grams
- 0.4″ x 0.5″ x 0.06″ (10mm x 13mm x 1.5mm)
- 0.1″ (2.5mm) mounting hole
Embedded solution for uploading webcam pictures to the cloud
Embedded solution for uploading webcam pictures to the cloud:
We have friends watch the cats when we go out-of-town. But we always leave a server running with a webcam (motion activated using the Linux “motion” software) so we can check in on them ourselves. But this project may inspire a change. It leverages the features of a Carambola2 to capture images and upload them to Dropbox.
In the picture above the green PCB is a development board for the tiny yellow PCB which is the actual Carambola2. It is soldered on the dev board using the same technique as those HC-05 Bluetooth modules. That shielded board includes a Qualcomm SoC running Linux and a WiFi radio. The dev board feeds it power and allows it connect to the USB webcam.
There’s a bit of command line kung-fu to get everything running but it shouldn’t be out of reach for beginners. Linux veterans will know that taking snapshots from a webcam at regular intervals is a simple task. Uploading to a secure cloud storage site is not. A Bash script handles the heavy lifting. It’s using the Dropbox Application API so this will not violate their TOS and you don’t have to figure out your own method of authenticating from the command line.
Filed under: digital cameras hacks, linux hacks
We have friends watch the cats when we go out-of-town. But we always leave a server running with a webcam (motion activated using the Linux “motion” software) so we can check in on them ourselves. But this project may inspire a change. It leverages the features of a Carambola2 to capture images and upload them to Dropbox.
In the picture above the green PCB is a development board for the tiny yellow PCB which is the actual Carambola2. It is soldered on the dev board using the same technique as those HC-05 Bluetooth modules. That shielded board includes a Qualcomm SoC running Linux and a WiFi radio. The dev board feeds it power and allows it connect to the USB webcam.
There’s a bit of command line kung-fu to get everything running but it shouldn’t be out of reach for beginners. Linux veterans will know that taking snapshots from a webcam at regular intervals is a simple task. Uploading to a secure cloud storage site is not. A Bash script handles the heavy lifting. It’s using the Dropbox Application API so this will not violate their TOS and you don’t have to figure out your own method of authenticating from the command line.
Filed under: digital cameras hacks, linux hacks
Open source PLC
Open source PLC:
In industrial applications, controlling relays, servos, solenoids, and the like isn’t just a matter of wiring in an Arduino and plugging in some code. No, for reliable operation you’ll need a PLC – a programmable logic controller – to automate all your hardware. PLCs are usually pretty expensive pieces of hardware, which led [Warwick] to come up with his own. He built two versions, one large and one small that can handle just about any task thrown at them.
Both devices are powered by an ATMEL SAM7S ARM chip running at 48 MHz. The smaller of the two devices has 10 digital inputs, 4 analog inputs, and 8 digital outputs able to sink 200 mA each. The larger PLC has 22 digital ins, 6 analog ins, and 16 digital outputs. Both of these devices have a ton of connectivity with USB, RS-232 and RS-485 ports
Below you can see the large PLC being used as a barcode scanner and as a strange device using compressed air to levitate a ping-pong ball. There’s also a demo of the smaller PLC lighting up some LEDs.
Filed under: hardware
In industrial applications, controlling relays, servos, solenoids, and the like isn’t just a matter of wiring in an Arduino and plugging in some code. No, for reliable operation you’ll need a PLC – a programmable logic controller – to automate all your hardware. PLCs are usually pretty expensive pieces of hardware, which led [Warwick] to come up with his own. He built two versions, one large and one small that can handle just about any task thrown at them.
Both devices are powered by an ATMEL SAM7S ARM chip running at 48 MHz. The smaller of the two devices has 10 digital inputs, 4 analog inputs, and 8 digital outputs able to sink 200 mA each. The larger PLC has 22 digital ins, 6 analog ins, and 16 digital outputs. Both of these devices have a ton of connectivity with USB, RS-232 and RS-485 ports
Below you can see the large PLC being used as a barcode scanner and as a strange device using compressed air to levitate a ping-pong ball. There’s also a demo of the smaller PLC lighting up some LEDs.
Filed under: hardware
Jun 10, 2013
How to interface 8 LCD displays and 24 leds with only two wires
How to interface 8 LCD displays and 24 leds with only two wires:
Jesus Echavarria @ jechavarria.com writes:
Jesus Echavarria @ jechavarria.com writes:
A couple of weeks ago, I just post a review of my MCP23017 breakout board. As the board configuration allows to connect up to 8 of these boards, I decided to do it and see that it really works. My goal is interface 8 LCD displays with two wires: SDA and SCL from an I2C bus. With direct IO`s of a microcontroller, you need at least 48 lines to control all the displays. With this option (and a little of software, of course), you can do this with only two lines.How to interface 8 LCD displays and 24 leds with only two wires - [Link]
Jun 8, 2013
Read Analog Voltages with an Arduino and display them on an LCD
Read Analog Voltages with an Arduino and display them on an LCD:
This project demonstrates how to use a voltage divider to read in analog voltages with an Arduino. Since we are using a voltage divider the voltage that the chip sees is within it’s range even though in this case the voltage measured can be up to 50 volts. The Arduino then calculates the actual 4 analog volages and outputs them on an LCD. Have a look at the code provided to implement this in your next project.
Via: Electronics Lab
This project demonstrates how to use a voltage divider to read in analog voltages with an Arduino. Since we are using a voltage divider the voltage that the chip sees is within it’s range even though in this case the voltage measured can be up to 50 volts. The Arduino then calculates the actual 4 analog volages and outputs them on an LCD. Have a look at the code provided to implement this in your next project.
Via: Electronics Lab
Jun 7, 2013
Jun 4, 2013
How to use Chrome’s serial API to talk with Arduino
How to use Chrome’s serial API to talk with Arduino:
Adobe’s evangelist Renaun, created a video to explain how to use Chrome’s serial API to talk with an Arduino board as well as receive data from it. You just need to run this sketch file on your board and then run the code in Chrome. Watch the video below to hear Renaun commenting the code!
Adobe’s evangelist Renaun, created a video to explain how to use Chrome’s serial API to talk with an Arduino board as well as receive data from it. You just need to run this sketch file on your board and then run the code in Chrome. Watch the video below to hear Renaun commenting the code!
Jun 3, 2013
Wireless monitoring
Wireless monitoring:
Brohogan presents this post explaining the process for building a solar powered wireless radiation monitor:
Brohogan presents this post explaining the process for building a solar powered wireless radiation monitor:
This project measures the background radiation outside the house, and transmits it to a display station inside the house. The outside sensing unit is solar powered (but it doesn’t have to be), and should have a range of at least 50m. The display station inside the house continuously displays the current background, and logs it to an SD card (along with date / time, temperature and other data). Daily high counts and other information are also displayed.
Carambola2 portable Dropbox uploader
Carambola2 portable Dropbox uploader:
Saulius has been working on this project to use the Carambola2 dev board for portable Dropbox uploading. This eliminates the need for a PC, allowing pictures from a webcam be to uploaded directly using the dev board’s built-in WiFi.
You can read Saulius’ article on his blog at Lukse.lt.
Via the contact form.
Saulius has been working on this project to use the Carambola2 dev board for portable Dropbox uploading. This eliminates the need for a PC, allowing pictures from a webcam be to uploaded directly using the dev board’s built-in WiFi.
Sometimes it’s overkill to use computer with 200W power consumption for 24/7 to do small task like upload picture from webcam to Dropbox every minute. In this article I will describe how save a lot of Watts and to have Carambola on Cloud!
You can read Saulius’ article on his blog at Lukse.lt.
Via the contact form.
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