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      • Smart Buoy [ GPS, Radio (NRF24) and a SD Card Module ]
      • Smart Buoy - [Making Wave and Temperature Measurements]
      • Smart Buoy [Summary]
  • snoop911 commented on BillyStuart's instructable Finnish Sauna

    If going electric, might as well do the the portable neck-down saunas from Therasage.

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  • I'd like to put a server on an arduino with an eithernet shield.. somebody did this long ago*, but it's for version 1.8 protocol 42.** Not sure how it works***, it seems the arduino just needs to process the PC game controls, and update the map accordingly.If I just want to play locally, not go online, do you know what/where I would need to buy to play with the (2015) 1.8 server? Ebay only lists 1.12.2, and that's for Win10 not 7/8. BTW, I see the Minecraft Raspberry PI / Pocket Edition is free, but I assume that's just the client side?*https://www.youtube.com/watch?v=EZRLOanNQ_w**http://wiki.vg/Protocol_version_numbers***The avr code: http://pastebin.com/f0HJG4c1

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      • Haptic Wanderer
  • Do you have any thoughts on how an SDR that's capable of transmitting at very low power (ex. LimeSDR or HackRF) can be used in conjunction with a traditional radio (like the Yaesu) to achieve a high power output?

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  • Do you have any thoughts if the PiEyeR could be ported to run on the Pi Zero (W)? Or is its 1-core BCM2835 too underpowered compared to the Pi 3 (BCM2837)? Also, while the clock speeds are nearly the same, the Pi Zero only has 512MB compared to 1GB... do you have any numbers on how much cpu/ram is used when running PiEyeR?

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      • Wonder Woman Cosplay: Body Armour and Gladiator Skirt
      • How to Make Craft Foam Look Like Leather
      • Reversible Color Changing Zip-Tie Lamp
  • snoop911 commented on BillyStuart's instructable Finnish Sauna

    Do you have any thoughts on any pre-fab sauna kits? Most seem to be electric/infrared (Health Mate), but some offer gas (Finnleo, Scandia etc).I'd love to go gas gas/fire since electric saunas seem to take longer to heat up, and don't get nearly as hot.. plus I rather pay the higher installation cost rather than the higher operating cost.A tiny closet-size gas indoor sauna in the garage would be ideal, with vent plumbing to the outside, but not sure if it's considered safe (or if it's even permitted in my area). Any idea if it's do-able?

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  • 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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  • 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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  • 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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  • 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 NiclaZ's instructable 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 = Tr…

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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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  • 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-acc…

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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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  • 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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  • 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 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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  • 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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  • 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 t…

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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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  • 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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  • 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 angl…

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

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  • 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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  • 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 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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  • Any tips for porting Micropython to a different embedded devices?

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

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

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  • 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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  • 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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  • 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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