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  • Organic Carrot & Ginger Sauerkraut

    I'm looking for a fool-proof fermenting gadget.. do you have any thoughts/experience on either the "Easy Fermenter" lids or the 'Kraut Source' vs the Pickle Pipe? Also, is there a way for the first-timer to know if the batch is contaminated? Even sterilizing/pressure-cooking the jars, I've read that a batch may go bad!

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  • Arduino Smartphone Coms/Serial Monitor Via Bluetooth HC-05, HC-06

    I have an old Microchip RN240M bluetooth (slave) that I'd love to control from my phone.. however the dongle only supports Bluetooth 2.0 SPP, do you think Androids with the latest bluetooth 5 will work with it?I found an older open-source bluetooth app that might be perfect starting point!http://aman-tugnawat.github.io/androbot/

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  • snoop911 commented on aliceniraimathi19's instructable How to Make Egg Dosai1 month ago
    How to Make Egg Dosai

    Where can you buy the Dosai batter.. or how do you make it if it's not available in stores?Can 'Forbidden Black Rice' be used, or should only white rice be soaked/fermented? Do you soak the rice and Black Urad dal / Black Gram lentils first then pound into a flour/batter?

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  • snoop911 commented on alamtania's instructable How to Book a Cab in Uber?1 month ago
    How to Book a Cab in Uber?

    Does the phone have to have GPS in order for the app to work? For example, if you're traveling can you schedule a pickup before you land?

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  • snoop911 commented on teamlighthouse's instructable Fix Your Broken Headphone Jack1 month ago
    Fix Your Broken Headphone Jack

    Any idea how to go from a TRRS to TRS?I have a headset that has TRRS but would love to cut it up so that it works with my landline cordless phone (2.5mm TRS jack).

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  • snoop911 commented on NiclaZ's instructable Arduino Unity Racing Game1 month ago
    Arduino Unity Racing Game

    Any suggestions how to pan/tilt an object at the center of the screen using using an external (accelerometer) sensor? I can't get it to stay on screen, and get all kinds of weird artifacts like drifting, gimbal lock and cross-contamination on the axis that I didn't want to change! This is how I was trying to move it:void SetPosByAngle ( float fPitch, float fRoll ) { Vector3 LowerLimit = new Vector3(0, 0, 0); Vector3 UpperLimit = new Vector3(180, 180, 180); // Normalize from -180/+180 to -1/+1 fPitch = (fPitch) / 180.0f; fRoll = (fRoll) / 180.0f; Vector3 AngleDiff = UpperLimit - LowerLimit; Vector3 CalculatedAngle = new Vector3(-fPitch * AngleDiff.y, 0, -fRoll * AngleDiff.x); TragetAngle = LowerLimit + CalculatedAngle; transform.localEulerAngles = ...

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    Any suggestions how to pan/tilt an object at the center of the screen using using an external (accelerometer) sensor? I can't get it to stay on screen, and get all kinds of weird artifacts like drifting, gimbal lock and cross-contamination on the axis that I didn't want to change! This is how I was trying to move it:void SetPosByAngle ( float fPitch, float fRoll ) { Vector3 LowerLimit = new Vector3(0, 0, 0); Vector3 UpperLimit = new Vector3(180, 180, 180); // Normalize from -180/+180 to -1/+1 fPitch = (fPitch) / 180.0f; fRoll = (fRoll) / 180.0f; Vector3 AngleDiff = UpperLimit - LowerLimit; Vector3 CalculatedAngle = new Vector3(-fPitch * AngleDiff.y, 0, -fRoll * AngleDiff.x); TragetAngle = LowerLimit + CalculatedAngle; transform.localEulerAngles = TragetAngle; }Where the angles sent to the function above are calculated via:fPitch = (float) (Math.Atan2(YAxisAccelerationData,ZAxisAccelerationData)+M_PI)*RAD_TO_DEG;fRoll = (float) (Math.Atan2(ZAxisAccelerationData, XAxisAccelerationData)+M_PI)*RAD_TO_DEG;I've read some people have had luck creating an artificial horizon.. they project a fixed vector and a variable one onto a common X/Z plane, then they apply the yaw ,for example, around the global axis instead of the object's axis. Although I've read even this isn't perfect, and it's better to use local rotations to update the forward vector together with a reference up vector to build the final orientation.Unfortunately, I haven't seen an actual implementation for any of this... I understand only 2 angles (pitch,yaw, or roll) can be derived from a 3-axis acclerometer, but what does the unity code look like transform.rotate,LookRotation,ProjectOnPlane, Quaternion.Euler, etc?https://gamedev.stackexchange.com/questions/140141...https://gamedev.stackexchange.com/questions/114512...https://forum.unity3d.com/threads/roll-pitch-and-y...

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  • WiFi - Access Point Out of a Raspberry Pi (Repeater)

    Any tips on doing a wifi repeater/extender? I'd like to wirelessly connect a pi zero w to my network but also have it act as an access point. I would think this should be easier since the pi doesn't have to run a dhcp server, it just needs to bridge the connection to the router it's already connected to.The device that connects to the pi would need to know the network password, but the upside is that it would always know the ip of the pi access point!None of the info I've been able to find seems to have this scenario:https://gist.github.com/tcg/0c1d32770fcf6a0acf448b7358c5d059http://imti.co/post/145442415333/raspberry-pi-3-wifi-station-aphttps://frillip.com/using-your-raspberry-pi-3-as-a-wifi-access-point-with-hostapd/http://blog.ithasu.org/2016/10/using-a-raspberry-pi-3-as-a-wifi-a...

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    Any tips on doing a wifi repeater/extender? I'd like to wirelessly connect a pi zero w to my network but also have it act as an access point. I would think this should be easier since the pi doesn't have to run a dhcp server, it just needs to bridge the connection to the router it's already connected to.The device that connects to the pi would need to know the network password, but the upside is that it would always know the ip of the pi access point!None of the info I've been able to find seems to have this scenario:https://gist.github.com/tcg/0c1d32770fcf6a0acf448b7358c5d059http://imti.co/post/145442415333/raspberry-pi-3-wifi-station-aphttps://frillip.com/using-your-raspberry-pi-3-as-a-wifi-access-point-with-hostapd/http://blog.ithasu.org/2016/10/using-a-raspberry-pi-3-as-a-wifi-access-point-and-bridge/

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  • DragonBoard: How to Access GPIOs Using C

    Any idea how much power the DragonBoard alone draws? I assume it's powered off a 5v usb supply, so probably less than 500ma, but it would be interesting to see if it can be used for low power / battery applications!

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  • Arduino - MPU6050 GY521 - 6 Axis Accelerometer + Gyro (3D Simulation With Processing)

    Any thoughts on using Unity to visualize the accelerometer data?I've been playing with it, but haven't had much luck getting to stay centered and simply tilting as I tilt the sensor.According to this, it seems you have project a reference frame in order to avoid drift, but there's no example!https://gamedev.stackexchange.com/questions/140141...https://forum.unity3d.com/threads/roll-pitch-and-y...https://gamedev.stackexchange.com/questions/136174/im-rotating-an-object-on-two-axes-so-why-does-it-keep-twisting-around-the-thir/136175

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  • snoop911 commented on BrittLiv's instructable Ozone Generator2 months ago
    Ozone Generator

    Do you have any thoughts on those continuous flow Oxygen Concentrators? Supposedly, they can help problem sleepers by pumping oxygen into a room... Not sure what's inside, or how they work, but they're super pricey. I imagine they must have some kind of consumable material and/or generate some kind of by-product, no? And if you're room starts at 80% nitrogen and 20% oxygen what is reasonable to expect after running for a few hours?

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  • Controlling Multiple LEDs With Python and Your Raspberry Pi's GPIO Pins

    Any idea about which python libraries are the latest for the rpi?For example, Raspian Jessie has the spi driver built-in (/dev/spidev0.x), which allows building spi applications using the c library (libcm2835).. but for python should you install py-libbcm2835 or spidev?

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  • *Preliminary* SPI on the Pi: Communicating With a SPI 3-axis Accelerometer Using a Raspberry Pi

    Any update to this instructable? For example,Regarding Step #7, is there a way to see if installed correctly? I rebooted but don't see anything new in /devAlso in Step #8, I was able to download via:https://github.com/annem/ADXL362_RaspPi/archive/ma...(sudo apt-get install unzip)unzip master.zip gcc -o ADXL362_RaspPi -I ../../bcm2835-1.5/src ../src/bcm2835.c ADXL362_RaspPi.cHowever it doesn't compile due to errors (see image):Finally, any thoughts on using auxspi0/1 instead of spi0? Apparently the auxspi peripherals have other cool features.. including the ability to transmit 1-32 bits at a time (instead of just 8 or 9 with spi0)!Unfortunately, only spi0 seems to be supported by the common driver/tools (spincl, WiringPI and the 'bcm2835' c lib)I did find one driver but seems like...

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    Any update to this instructable? For example,Regarding Step #7, is there a way to see if installed correctly? I rebooted but don't see anything new in /devAlso in Step #8, I was able to download via:https://github.com/annem/ADXL362_RaspPi/archive/ma...(sudo apt-get install unzip)unzip master.zip gcc -o ADXL362_RaspPi -I ../../bcm2835-1.5/src ../src/bcm2835.c ADXL362_RaspPi.cHowever it doesn't compile due to errors (see image):Finally, any thoughts on using auxspi0/1 instead of spi0? Apparently the auxspi peripherals have other cool features.. including the ability to transmit 1-32 bits at a time (instead of just 8 or 9 with spi0)!Unfortunately, only spi0 seems to be supported by the common driver/tools (spincl, WiringPI and the 'bcm2835' c lib)I did find one driver but seems like there might be an issue with it in Raspian/Jessie8 (4.4.50+):https://github.com/raspberrypi/linux/blob/rpi-4.9.... https://github.com/raspberrypi/linux/blob/rpi-4.9...I'd still like to give it a try, but is the process the same? Does loading the driver module require changes the device tree / overlays?

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  • snoop911 commented on samuel123abc's instructable Arduino YL-44 Buzzer Module3 months ago
    Arduino YL-44 Buzzer Module

    I'm looking for a buzzer than can be turned on when the control signal is high...On ebay I found a buzzer that says 'High Level Trigger for Arduino', I assume this to mean when the control signal is HIGH, the buzzer will sound, right? However, if it has a pnp (2TY) transistor shouldn't the base control signal be LOW for the buzzer to sound? Only if it had an npn (ex. 2N2222) transistor THEN the base control signal is HIGH for the buzzer to sound. Also is it possible for the VCC and the control signal to be 12V instead of 5V? Or would the buzzer and/or limiting current resistor have to change?

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  • Track 2D Movement Using Arduino Ultrasonic Sensors and Visualize in Unity

    Any advice how to rotate an object in unity given x,y,z accelerometer data?Because pitch/roll/yaw only make sense given a fixed point of reference this is causing all kinds of strange artifacts like drifting, gimbal lock and cross-contamination on the axis that I didn't ask to change.I've read some people have had luck creating an artificial horizon.. they project a fixed vector and a variable one onto a common X/Z plane, then they apply the yaw ,for example, around the global axis instead of the object's axis. Although I've read even this isn't perfect, and it's better to use local rotations to update the forward vector together with a reference up vector to build the final orientation.Unfortunately, I haven't seen an actual implementation for any of this... I understand only 2 an...

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    Any advice how to rotate an object in unity given x,y,z accelerometer data?Because pitch/roll/yaw only make sense given a fixed point of reference this is causing all kinds of strange artifacts like drifting, gimbal lock and cross-contamination on the axis that I didn't ask to change.I've read some people have had luck creating an artificial horizon.. they project a fixed vector and a variable one onto a common X/Z plane, then they apply the yaw ,for example, around the global axis instead of the object's axis. Although I've read even this isn't perfect, and it's better to use local rotations to update the forward vector together with a reference up vector to build the final orientation.Unfortunately, I haven't seen an actual implementation for any of this... I understand only 2 angles (pitch,yaw, or roll) can be derived from a 3-axis acclerometer, but what does the unity code look like transform.rotate,LookRotation,ProjectOnPlane, Quaternion.Euler, etc?

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  • VNC Configuration Without Display on Pi Zero W

    Can android create a new wifi hotspot and then bridge it to it's existing wifi connection?I'm thinking this because I don't have a usb wifi hotspot laying around, and since the phone is being used for vnc anyways.. couldn't the android itself act as the hotspot? I've seen internet sharing via usb tethering , but I was thinking of setting it up as a wifi hotspot (new ssid), and then on the pi zero w side, setting the that ssid/password in the /boot/wpa_supplicant.conf or /etc/wpa_supplicant/wpa_supplicant.confHowever, not sure if android allows you to extend/bridge an existing wifi connection this way.

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  • DIY Pan & Tilt Project(Android and Arduino)

    How would you create an android app that continuously gets the status from an arduino and then displays it?

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  • snoop911 commented on Akin Yildiz's instructable Grow Cannabis the Smart Way5 months ago
    Grow Cannabis the Smart Way

    Any thoughts on Rick Story ("Run from the Cure" documentary fame) who uses THC oil for cancer?Or research findings from lesser known cannabinoids (ex. CBD)? Ben Greenfield's podcast, talks about the work from Kyle Boyar.

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  • RTL-SDR FM radio receiver with GNU Radio Companion

    I got FM to work fine, any tips on how to do AM? I'm trying to listen to 640khz with a rtl-sdr and HamItUp/SpyVerter. The upconverter puts the RF at 125Mhz, so I tune the radio to 125.64e6 (125e6 + 640e3), then pass it to a low pass filter before demodulating and outputting to the sound card. Unfortunately, it doesn't work, any idea what could be wrong? http://imgur.com/a/BxBVQ

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  • snoop911 commented on cfreeman8's instructable Essential Oil Shelf8 months ago
    Essential Oil Shelf

    Very nice! I'd like to start using essential oils too, can you ask your sister what brands (and where to buy) that are good quality? I've read reviews of products that say 100% pure essential / therapeutic yet the reviews say otherwise! Like the sprays/mists from Aroma Naturals or Young Living?

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  • The Super Easy Micropython ESP8266 Windows Guide. No Guesswork Required!

    Any tips for porting Micropython to a different embedded devices?

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  • snoop911 commented on Ninzerbean's instructable Stalking the Wild Lion's Mane Mushroom10 months ago
    Stalking the Wild Lion's Mane Mushroom

    There was a great episode of the Smart Drug Smarts Podcast that talks about the Lion Mane mushroom.. I know 4 Sigmatic sells instant coffee with it, but I'd love to grow my own! Any idea if I buy a kit (oregon/everything mushroom), can I grow my own continuously by collecting the spores?https://www.youtube.com/watch?v=QIZQ39wYkI0

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  • Making a Multiboot USB drive (All-In-One).

    Any tips for doing multi-boot (androidx86 , windows) on either a UEFI or legacy bios laptop?My goal originally was to use a multi-boot usb on a virtual machine... so that I could keep all the images on a usb, and just boot a vm from it whenever I need it.That didn't work, so then I tried using 'easy2boot', but not sure in what order to do the install... i.e. windows first then the loader (ubuntu/wabi/grub/Android x86 installer)? Any pointers?

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  • How to Use Arduino in Matlab and Simulink

    Is there way to use the board support packages with the $150 'home edition' version of Matlab?According to the Mathworks site, it seems like you can't purchase the Embedded Coder or Simulink Add-on with the Home license:https://www.mathworks.com/store/link/products/home...There's also a Beagle Bone Black that I'd like to try, but that also needs the bsp downloadhttp://www.mathworks.com/videos/beaglebone-black-support-from-embedded-coder-101130.html

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  • snoop911 commented on bobcatsteph3's instructable Seedless Black Raspberry Jam12 months ago
    Seedless Black Raspberry Jam

    There's a couple online companies that sell frozen black raspberries (.sturmsberryfarm, nwwildfoods, etc),but finding local sources can be difficult. Mother's Market is a small health food store , but they do carry Stahlbush's frozen Black Raspberries!

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  • snoop911 commented on Akin Yildiz's instructable pot212 months ago
    pot2

    Great project!I'm wondering though about the blynk cloud portion.. is there a way to do it such that the data doesn't rely on any one company?I backed a similar product on Inidegogo (Wimoto motes) but that didn't work out.. I then got the koubachi plant sensor, which is awesome, but the company is closing up shop, so future support will be gone.So I love these kinds of projects but would be nice to pack up the data and easily move across cloud platforms!

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  • How to Augmented Reality Tutorial: Virtual Buttons

    Do you have any thoughts on AruCo, the AR library for OpenCV? I'm interested in detecting markers and overlaying information, something like the following but not sure what it uses: The only Unity / AruCo tutorial I could find is not in English :(http://tips.hecomi.com/entry/2015/09/16/014119

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  • snoop911 followed superaudiomadras1 year ago
  • snoop911 commented on bytefoolish's instructable RasPi + OpenCV = Face Tracking1 year ago
    RasPi + OpenCV = Face Tracking

    From what I've read on OpenCV, it seems for face recognition, it's necessary to capture positive and negative images...But, do you know if generating synthetic positive images from actual (positive) images using opencv_createsamples is necessary when not using the Haar algorithm.. like LBP, eigenface, fisherface?For example, this tutorial creates new positive images by placing inside negative images: http://www.memememememememe.me/training-haar-casca...By contrast, this example, only uses FaceRecognition class, and does not use opencv_createsampleshttp://nates.space/2016/01/13/face-recognition-wit...Any thoughts on this?

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  • snoop911 commented on SnShines's instructable Intruder/Guest alert system1 year ago
    Intruder/Guest alert system

    From what I've read on OpenCV, it seems for face recognition, it's necessary to capture positive and negative images...But, do you know if generating synthetic positive images from actual (positive) images using opencv_createsamples is necessary when using not using the Haar algorithm.. like LBP, eigenface, fisherface?For example, this tutorial creates new positive images by placing inside negative images: http://www.memememememememe.me/training-haar-casca...By contrast, this example, only uses FaceRecognition class, and does not use opencv_createsampleshttp://nates.space/2016/01/13/face-recognition-wit...Any thoughts on why this is, or what approach is generally done?

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  • Detecting Circles with OpenCV and Python

    From what I've read on OpenCV, it seems for face recognition, it's necessary to capture positive and negative images...But, do you know if generating synthetic positive images from actual (positive) images using opencv_createsamples is necessary when using not using the Haar algorithm.. like LBP, eigenface, fisherface?For example, this tutorial creates new positive images by placing inside negative images: http://www.memememememememe.me/training-haar-casca...By contrast, this example, only uses FaceRecognition class, and does not use opencv_createsampleshttp://nates.space/2016/01/13/face-recognition-wit...Any thoughts on this?

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  • snoop911 commented on inventor18's instructable Streaming Video Over a network1 year ago
    Streaming Video Over a network

    Derek Molloy has a nice video where he creates a script (and sdp file) that captures a webcam video and streams it across the network (vlc , tano player). I haven't seen anybody use tvheadend, but I imagine that should work too, no?

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  • snoop911 commented on TheSweetEdge's instructable Making the Fluffiest Pancake Ever1 year ago
    Making the Fluffiest Pancake Ever

    Do you think it can be made fluffy with a pancake maker?https://www.amazon.com/Babycakes-Flip-Over-Pancake...I usually use it with Kodiak flapjack mix

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  • snoop911 commented on erickerson's instructable BeagleBone Black MiniSumo Bot1 year ago
    BeagleBone Black MiniSumo Bot

    Did you find any performance difference between the Beaglebone Black and the Raspberry Pi?

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  • snoop911 commented on niq_ro's instructable RDA5708 FM radio with Arduino1 year ago
    RDA5708 FM radio with Arduino

    What do you think of Silicon Labs' Si4730? I'd like to do an AM radio recorder application, but not sure if the digital interface to get the data is capable of being done on an arduino!

    What do you think of Silicon Labs' Si4730? I'd like to do an AM radio recorder application, but not sure if the digital interface to get the data is capable of being done on an arduino!

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  • snoop911 commented on Dayswon's instructable Irish Stout Cast Iron Beer Bread 1 year ago
    Irish Stout Cast Iron Beer Bread

    Do you think this can be done with a Wonder Pot / Omnia Oven instead of the cast iron ?

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  • snoop911 commented on chrisgoad3882's instructable Raspberry Pi: Minecraft Server1 year ago
    Raspberry Pi: Minecraft Server

    Thanks. Since posting my question, I found an example of minecraft running on an 8-bit avr!https://www.youtube.com/watch?v=EZRLOanNQ_whttp://pastebin.com/f0HJG4c1From the video, it looks like the outputs of the device can be controlled from the gameplay! Any thoughts on how this server works?Does all the map/environment reside on the server? If so, I would imagine inputs to the device can also be represented in the game, maybe using a redstone lamp?

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  • snoop911 commented on jayredge's instructable How to Host Your Own Cloud v2.01 year ago
    How to Host Your Own Cloud v2.0

    Very cool! I've been looking for a free alternative to subsonic! Do you happen to know if Ampache can be used to stream from a raspberry pi or other embedded iot device? Would be great if music can be streamed from an esp8266/esp32, or other simple network chip!

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  • Turn your Raspberry Pi into a Wireless Portable Bluetooth Audio System A2DP

    Is it possible to transmit from one rpi to another? Or, even better, can the rpi send audio to an android for playback?From what I've seen, http://stackoverflow.com/questions/21104611/how-to-modify-androids-bluetooth-stack-to-enable-a2dp-sink#_=_the bt stack on the android doesn't support a2dp sinking? But maybe things have changed recently... I wouldn't mind using a different bt profile (HFP or HSP ) in order to achieve this!https://www.raspberrypi.org/forums/viewtopic.php?t...

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