Mobile Arduino with Mobile.Processing
Using Mobile Processing and a Motorola cell phone to relay arduino data to and from a website.
http://www.eeweb.com/blog/circuit_projects/mobile-processing-based-on-arduino
Apr 17, 2013
Apr 13, 2013
Generating electricity from alcohol
Generating electricity from alcohol:
Here’s a thermoelectric generator which [x2Jiggy] built. The concept uses heat from a flame, biased against cooler temperatures produced by that huge heat sink making up the top portion of the build to produce electricity via the Peltier effect.
The build is passively cooled, using a sync assembly that takes advantage of heat pipes to help increase the heat dissipation. A nearly flat heat sink makes up the mounting surface for the hot side, which faces down toward a flame driving the generator. [x2Jiggy] started the project by using a can, wick, and olive oil as the heat source. He managed to get about 2V out of the system with this method. What you see here is the second version. It swaps out the olive oil lamp for an alcohol stove. The cans with holes punched in them act as a wind screen while also providing a stable base. This rendition produces about 3V, but it doesn’t sound like there are any precise measurements of what it can do under load.
Filed under: green hacks
Here’s a thermoelectric generator which [x2Jiggy] built. The concept uses heat from a flame, biased against cooler temperatures produced by that huge heat sink making up the top portion of the build to produce electricity via the Peltier effect.
The build is passively cooled, using a sync assembly that takes advantage of heat pipes to help increase the heat dissipation. A nearly flat heat sink makes up the mounting surface for the hot side, which faces down toward a flame driving the generator. [x2Jiggy] started the project by using a can, wick, and olive oil as the heat source. He managed to get about 2V out of the system with this method. What you see here is the second version. It swaps out the olive oil lamp for an alcohol stove. The cans with holes punched in them act as a wind screen while also providing a stable base. This rendition produces about 3V, but it doesn’t sound like there are any precise measurements of what it can do under load.
Filed under: green hacks
Apr 12, 2013
IP Camera Bluetooth Robot
IP Camera Bluetooth Robot:
Our friend Dave from Plastibots has just completed this great looking Bluetooth Robot that has an IP Camera on board. Dave wrote an Android application called BT Bot Control to allow you to drive your robot around using commands over Bluetooth using your Android phone. The video from the camera is sent back using Wifi. I can just imagine how much fun this would be with a squirt gun connected! Connect either a powerful solenoid or a servo to squirt the target when you have them in your sights. Might need some larger motors to get the speed you would need to quickly drive away before the person you squirted tosses the bot in the pool though.
Our friend Dave from Plastibots has just completed this great looking Bluetooth Robot that has an IP Camera on board. Dave wrote an Android application called BT Bot Control to allow you to drive your robot around using commands over Bluetooth using your Android phone. The video from the camera is sent back using Wifi. I can just imagine how much fun this would be with a squirt gun connected! Connect either a powerful solenoid or a servo to squirt the target when you have them in your sights. Might need some larger motors to get the speed you would need to quickly drive away before the person you squirted tosses the bot in the pool though.
Apr 7, 2013
Old Sony Ericsson phone as GSM shield, clock, display, keyboard, BT, audio, more - Arduino Forum
Old Sony Ericsson phone as GSM shield, clock, display, keyboard, BT, audio, more - Arduino Forum: Old Sony Ericsson phone as GSM shield, clock, display, keyboard, BT, audio, more
How to set up home data server using OpenWRT on Linksys WRT160NL router
How to set up home data server using OpenWRT on Linksys WRT160NL router: How to set up home data server using OpenWRT on Linksys WRT160NL router�
Every home needs a router. Why not to turn your router into a webcam and data server, for example, to monitor a baby.
Linksys router WRT160NL can be reprogrammed to use OpenWRT (that is a kind of Linux), to connect a hub, flash stick, webcam, sound card, one wire interface and arduino for relay control, one-wire temperature sensors. The router still preserves its function as a rooter. Power consumption is 5W with webcam. WRT160NL costs ca 60 EUR+ 30 EUR webcam. Here are links to example router webservers:
http://router5.site90.com/
http://router4.site40.net/
http://78.84.193.176/
http://87.226.78.126/salaspils/
Every home needs a router. Why not to turn your router into a webcam and data server, for example, to monitor a baby.
Linksys router WRT160NL can be reprogrammed to use OpenWRT (that is a kind of Linux), to connect a hub, flash stick, webcam, sound card, one wire interface and arduino for relay control, one-wire temperature sensors. The router still preserves its function as a rooter. Power consumption is 5W with webcam. WRT160NL costs ca 60 EUR+ 30 EUR webcam. Here are links to example router webservers:
http://router5.site90.com/
http://router4.site40.net/
http://78.84.193.176/
http://87.226.78.126/salaspils/
Smart home automation webserver on OpenWRT router WR703N interfaced to Arduino, compared to Raspberry Pi and Ubuntu
Smart home automation webserver on OpenWRT router WR703N interfaced to Arduino, compared to Raspberry Pi and Ubuntu: Smart home automation webserver on OpenWRT router WR703N interfaced to Arduino, compared to Raspberry Pi and Ubuntu
SMS controlled Wireless Irrigation System
Getting the Materials: SMS controlled Wireless Irrigation System
Stealing cars and ringing doorbells with radio
Stealing cars and ringing doorbells with radio:
The cheap software defined radio platforms that can be built out of a USB TV tuner aren’t getting much love on the Hackaday tip line of late. Thankfully, [Adam] sent in a great guide to cracking sub-GHz wireless protocols wide open, and ringing doorbells, opening cars, and potentially setting houses on fire in the process.
The first wireless hack [Adam] managed to whip up is figuring out how a wireless doorbell transmitter communicates with its receiver. [Adam] connected a FUNcube software defined radio dongle (although any one of the many USB TV tuner dongles we’ve seen would also work) and used GNU Radio to send the radio signals received to a WAV file. When looking at this audio file in Audacity, [Adam] saw the tell-tale signs of digital data, leaving with a string of 1s and 0s that would trigger his wireless doorbell.
The FUNcube dongle doesn’t have the ability to transmit, though, so [Adam] needed a more capable software defined radio to emulate the inner workings of a doorbell transmitter. He found one in the Ettus Research USRP, a software designed radio that’s doing a good job of keeping [Balint], Hackaday SDR extraordinaire, very busy. By sending the data [Adam] decoded with the FUNcube dongle over the USRP, he was able to trigger his wireless doorbell using nothing but a few hundred dollars of radio equipment and software ingenuity.
Doorbells are a low-stakes game, so [Adam] decided to step things up a little and unlock his son’s car by capturing and replaying the signals from a key fob remote. Modern cars use a rolling code for their keyless entry, so that entire endeavour is just a party trick. Other RF-enabled appliances, such as a remote-controlled mains outlet, are a much larger threat to home and office security, but still one [Adam] managed to crack wide open.
Filed under: radio hacks, security hacks
The cheap software defined radio platforms that can be built out of a USB TV tuner aren’t getting much love on the Hackaday tip line of late. Thankfully, [Adam] sent in a great guide to cracking sub-GHz wireless protocols wide open, and ringing doorbells, opening cars, and potentially setting houses on fire in the process.
The first wireless hack [Adam] managed to whip up is figuring out how a wireless doorbell transmitter communicates with its receiver. [Adam] connected a FUNcube software defined radio dongle (although any one of the many USB TV tuner dongles we’ve seen would also work) and used GNU Radio to send the radio signals received to a WAV file. When looking at this audio file in Audacity, [Adam] saw the tell-tale signs of digital data, leaving with a string of 1s and 0s that would trigger his wireless doorbell.
The FUNcube dongle doesn’t have the ability to transmit, though, so [Adam] needed a more capable software defined radio to emulate the inner workings of a doorbell transmitter. He found one in the Ettus Research USRP, a software designed radio that’s doing a good job of keeping [Balint], Hackaday SDR extraordinaire, very busy. By sending the data [Adam] decoded with the FUNcube dongle over the USRP, he was able to trigger his wireless doorbell using nothing but a few hundred dollars of radio equipment and software ingenuity.
Doorbells are a low-stakes game, so [Adam] decided to step things up a little and unlock his son’s car by capturing and replaying the signals from a key fob remote. Modern cars use a rolling code for their keyless entry, so that entire endeavour is just a party trick. Other RF-enabled appliances, such as a remote-controlled mains outlet, are a much larger threat to home and office security, but still one [Adam] managed to crack wide open.
Filed under: radio hacks, security hacks
Adding fireplace control to your home automation
Adding fireplace control to your home automation:
[James] has an admirable home automation system which he’s been working on for years. It does things like monitor the state of the garage door, control the lights, and it even notifies him of a power failure. One thing that wasn’t on the system yet are the fireplaces he has in his home. The hardware you see above is how he patched into the fireplace remote control system in order to automate them.
The remote control uses RF to communicate with a base station. Unlike controlling home theater components which use IR, this makes it a bit more difficult to patch into. Sure, we’d love to see some reverse engineering of the protocol so that a simple radio module could be used, but [James] chose the route which would mean the least amount of hacking on his part. He soldered wires onto the PCB for the buttons and connected to them using reed relays. These let the Arduino simulate button presses.
With the rig connected to the home network he has a lot of options. The system can sense if the house is occupied. If it determines that no one is home it will switch off the fireplaces. [James] also mentions the ability to monitor for carbon monoxide or house fires, switching off the gas fireplaces in either case.
Filed under: home hacks
[James] has an admirable home automation system which he’s been working on for years. It does things like monitor the state of the garage door, control the lights, and it even notifies him of a power failure. One thing that wasn’t on the system yet are the fireplaces he has in his home. The hardware you see above is how he patched into the fireplace remote control system in order to automate them.
The remote control uses RF to communicate with a base station. Unlike controlling home theater components which use IR, this makes it a bit more difficult to patch into. Sure, we’d love to see some reverse engineering of the protocol so that a simple radio module could be used, but [James] chose the route which would mean the least amount of hacking on his part. He soldered wires onto the PCB for the buttons and connected to them using reed relays. These let the Arduino simulate button presses.
With the rig connected to the home network he has a lot of options. The system can sense if the house is occupied. If it determines that no one is home it will switch off the fireplaces. [James] also mentions the ability to monitor for carbon monoxide or house fires, switching off the gas fireplaces in either case.
Filed under: home hacks
DIY Arduino Pro Mini quadcopter
DIY Arduino Pro Mini quadcopter:
[execUc] took a stock V929 quadcopter and started making some crafty customizations. The main change – the control electronics were replaced by an Arduino Pro Mini (16Mhz model). He soldered all the modules on a prototyping board and, although admittedly a bit heavy, the little guy takes flight with no problem.
Among other details, an HMC5883L (magnetometer) and MPU6050 (accelerometer / gyroscope) are used as sensors. A LiPo 7.4V battery pack supplies the power. The brushed motors are controlled by pulse-width modulation from SI2302 MOSFET with added diodes. He plans to swap out the micro-controller for an ARM7 stm32F103 for extra computing power, and needs to play with the PID values to correct a slight problem he seems to be having when rotating.
Check out a test flight video after the break. [execUc] has a thorough list of all the alterations he made in the video description, so be sure to read it.
[via Hacked Gadgets]
Filed under: arduino hacks, drone hacks, toy hacks
[execUc] took a stock V929 quadcopter and started making some crafty customizations. The main change – the control electronics were replaced by an Arduino Pro Mini (16Mhz model). He soldered all the modules on a prototyping board and, although admittedly a bit heavy, the little guy takes flight with no problem.
Among other details, an HMC5883L (magnetometer) and MPU6050 (accelerometer / gyroscope) are used as sensors. A LiPo 7.4V battery pack supplies the power. The brushed motors are controlled by pulse-width modulation from SI2302 MOSFET with added diodes. He plans to swap out the micro-controller for an ARM7 stm32F103 for extra computing power, and needs to play with the PID values to correct a slight problem he seems to be having when rotating.
Check out a test flight video after the break. [execUc] has a thorough list of all the alterations he made in the video description, so be sure to read it.
[via Hacked Gadgets]
Filed under: arduino hacks, drone hacks, toy hacks
Python script migrates from dying Google Reader to Evernote
Python script migrates from dying Google Reader to Evernote:
We’re sure you’ve heard by now that Google has decided to close its RSS feed aggregator service called Google Reader. We’ve got to remember to get our list of thousands of great hacking blog feeds off of there before it’s gone. But just preserving the list is rather easy. [Paul Kerchen] has a bit different problem. He’s got hundreds of articles starred and he wants to preserve a way to find those pages again. His solution was to write his own Python script to migrate starred Google Reader articles over to Evernote.
We’re not here to promote the Evernote service. But just so we’re on the same page, it’s an archiving system that lets you save things like webpages and text documents for access on a wide range of different platforms. So all that really needs to happen is for [Paul] to get the list of links from his starred articles folder formatted for import on Evernote. It starts by using Google Takeout to download an archive of his account data. Within this dump is a JSON formatted file called ‘starred.json’. His script parses the data and imports each article into Evernote. There’s even rate limiting to manage the daily import maximum of free accounts.
Filed under: internet hacks
We’re sure you’ve heard by now that Google has decided to close its RSS feed aggregator service called Google Reader. We’ve got to remember to get our list of thousands of great hacking blog feeds off of there before it’s gone. But just preserving the list is rather easy. [Paul Kerchen] has a bit different problem. He’s got hundreds of articles starred and he wants to preserve a way to find those pages again. His solution was to write his own Python script to migrate starred Google Reader articles over to Evernote.
We’re not here to promote the Evernote service. But just so we’re on the same page, it’s an archiving system that lets you save things like webpages and text documents for access on a wide range of different platforms. So all that really needs to happen is for [Paul] to get the list of links from his starred articles folder formatted for import on Evernote. It starts by using Google Takeout to download an archive of his account data. Within this dump is a JSON formatted file called ‘starred.json’. His script parses the data and imports each article into Evernote. There’s even rate limiting to manage the daily import maximum of free accounts.
Filed under: internet hacks
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