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      • Budget Arduino RGB Word Clock!
      • Microgravity Plant Grower "Disco Ball"
      • Rick & Morty Portal Gun (Arduino & 3D Printer Project)
  • Budget Arduino RGB Word Clock!

    I have budgetted it further and light-bleed is absolutely minimal!items required: inkjet transparency sheet, tracing paper, 3mm clear plastic/perspex etc (80mmx80mm), double-sided tape!1. print pic of the letters twice on same transparency sheet - 1 reversed.(printer prints on rough side of transparency)2. cut out prints3. take reversed print and put it shiny side down on a table.4. cover with double-side tape and put tracing paper on top.5. cover this with double-side tape and put non-reversed print on top.ALIGN THESE EXACTLY - use a window/lightbox(the reason for one reversed is to get 2 prints ink-to-ink side6. cover this with double-side tape and put 3mm clear plastic on top.7. trim print edges to fit plastic8. put a thin strip of double-side tape on top and bottom leds and align with…

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    I have budgetted it further and light-bleed is absolutely minimal!items required: inkjet transparency sheet, tracing paper, 3mm clear plastic/perspex etc (80mmx80mm), double-sided tape!1. print pic of the letters twice on same transparency sheet - 1 reversed.(printer prints on rough side of transparency)2. cut out prints3. take reversed print and put it shiny side down on a table.4. cover with double-side tape and put tracing paper on top.5. cover this with double-side tape and put non-reversed print on top.ALIGN THESE EXACTLY - use a window/lightbox(the reason for one reversed is to get 2 prints ink-to-ink side6. cover this with double-side tape and put 3mm clear plastic on top.7. trim print edges to fit plastic8. put a thin strip of double-side tape on top and bottom leds and align with the leds - clock must be on for this step.all done!Base is a block of wood with a slot to fit plastic and print "sandwich"explanation:the 3mm plastic is chosen to match the "angle" of the leds. any thinner and the letters are not completely illuminated, any thicker and you get bleed.the tracing paper makes a perfect diffuser between the two printed stencils.taping the lot together gives a good crisp image!some day I'll buy a 3d printer - this does look nice though.I hope this makes sense - I could do my own instructable with these instructions!

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  • Budget Arduino RGB Word Clock!

    I have just built this but I don't have a 3d printer.I printed the picture of your front panel stencil onto inkjet transparency twice.I put a piece of 3mm(1/8) clear perspex sheet in front of the leds, one sheet of stencil, a sheet of tracing paper (as a diffuser) and then a second stencil sheet.There appeared to be no sensible way to set the time so I used an esp8266-1 (only 1 I/O line needed)took out rtc code, added ntp. it works well.

    Hi Jack,I do need to redo a chunk of code as i cut out the dst part in error....My includes are here:#include <Wire.h>//#include <RTClib.h>//#include <DST_RTC.h>#include <Adafruit_GFX.h>#include <Adafruit_NeoMatrix.h>#include <Adafruit_NeoPixel.h>#include <NTPClient.h>#include <ESP8266WiFi.h>#include <WiFiUdp.h>#include <time.h>Setup section has:WiFi.begin(ssid, password); //these are previously defined.while ( WiFi.status() != WL_CONNECTED ) { delay ( 500 ); Serial.print ( "." ); }timeClient.begin();Loop section has:timeClient.update(); // this should probably only run once every couple of minutestimeClient.getHours()timeClient.getMinutes()are used to get the time.this should be copied into "theTime" varia…

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    Hi Jack,I do need to redo a chunk of code as i cut out the dst part in error....My includes are here:#include <Wire.h>//#include <RTClib.h>//#include <DST_RTC.h>#include <Adafruit_GFX.h>#include <Adafruit_NeoMatrix.h>#include <Adafruit_NeoPixel.h>#include <NTPClient.h>#include <ESP8266WiFi.h>#include <WiFiUdp.h>#include <time.h>Setup section has:WiFi.begin(ssid, password); //these are previously defined.while ( WiFi.status() != WL_CONNECTED ) { delay ( 500 ); Serial.print ( "." ); }timeClient.begin();Loop section has:timeClient.update(); // this should probably only run once every couple of minutestimeClient.getHours()timeClient.getMinutes()are used to get the time.this should be copied into "theTime" variableit was suprisingly painless. it connects in just a couple of seconds an you would think it had an rtc!Board has boot and reset buttons added. two resistors and a 3.3 regulator.It needs a 4-pin connector added to update code.The stand was an offcut of hardwood (teak or japanese oak I think) with a slot cut in it.There's some light leakage between adjacent letters (I wish I had a 3d printer!) but it's the best I could do!Andrew

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  • Budget Arduino RGB Word Clock!

    Modified as I didn't have a 3d printer.I used esp8266-1 and time is set automatically from my network.

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  • Sonos Like Spotify Wifi Speaker

    Great that it works!Was I right about the quality ?What a difference!

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  • Sonos Like Spotify Wifi Speaker

    You are lucky, half the work is done for you with links on the back.you only need the pins on the short edge.VCC - to pi pin (2)GND to pi pin (6)BCK to pi pin (12)DIN to pi pin (40)LCK to pi pin (35)SCK to GNDall hardware done!

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  • Sonos Like Spotify Wifi Speaker

    Hi At-bh,I use a standard raspberry pi zero W.9.5 ukpounds. simple cheap i2s sound card (link given) about 3 ukpounds.https://www.aliexpress.com/item/4000049217053.html...you can also get them from ebay or amazon.I have given the pin connections further down this chat.the sound quality is superb.configuration clues also given further down.let me know how you get on.

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  • andybiker commented on msuzuki777's instructable LOG WiFi Analyzer
    LOG WiFi Analyzer

    When you get a minute, put a multimeter on your circuit and measure the voltage either side of the 1N5817 with respect to ground.the 1N5817 is a shottky diode and only has 0.3v voltage drop.Either (1) your esp8266 is currently running on 4.7v (ouch) or(2) your usb supply is about 3.6v (or a little higher)you can "get away" with the diode dropper using 2x1n4001 diodes (0.7v each) which will bring 5v down to 3.6ish.Running a 3.3v micro higher than this may let the magic smoke out....

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  • Rubber-Band Powered Autonomous Vehicle

    It's nice to be reminded of these.When I was in primary school we used to make these with a cotton reel, rubber band and two matchsticks. one was broken in half to hold one end of the elastic band which then went through the centre of the cotton reel.The other matchstick was the one that pressed against the floor.we used to rub wax against that side of the cotton reel.That was almost 50 years ago!

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  • Sonos Like Spotify Wifi Speaker

    The I2S board has 10 pins.VCC - to pi pin (2)3.3 - via 1k resistor to last pin (XMT)GND to pi pin (6)FLT join to GNDDMP join to GNDSCL join to GNDBCK to pi pin (12)DIN to pi pin (40)LCK to pi pin (35)FMT join to GNDXMT join to 1k resistor from 3.3The connection to the xmt pin had me fooled. it's an enable! if left off, it will "sometimes" work!The dac is a BurrBrown PCM5102 and uses the HifiBerry-dac overlay.how to configure..... apologies if I leave something out...first we edit /boot/config.txtsudo nano /boot/config.txtYou will need to change the following things:Uncomment (remove the # before the line):dtparam=i2s=onComment (add a # before the line):#dtparam=audio=on(this line above disables the onboard sound)Append this to the end of the file:dtoverlay=hifiberry-dacnow save …

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    The I2S board has 10 pins.VCC - to pi pin (2)3.3 - via 1k resistor to last pin (XMT)GND to pi pin (6)FLT join to GNDDMP join to GNDSCL join to GNDBCK to pi pin (12)DIN to pi pin (40)LCK to pi pin (35)FMT join to GNDXMT join to 1k resistor from 3.3The connection to the xmt pin had me fooled. it's an enable! if left off, it will "sometimes" work!The dac is a BurrBrown PCM5102 and uses the HifiBerry-dac overlay.how to configure..... apologies if I leave something out...first we edit /boot/config.txtsudo nano /boot/config.txtYou will need to change the following things:Uncomment (remove the # before the line):dtparam=i2s=onComment (add a # before the line):#dtparam=audio=on(this line above disables the onboard sound)Append this to the end of the file:dtoverlay=hifiberry-dacnow save this (escape : w q )now create etc/asound.confsudo nano /etc/asound.confAnd write the following:pcm.!default { type hw card 0}ctl.!default { type hw card 0}now save this (escape : w q )reboot your Pi!I hope you enjoy!Cheers,Andrew

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  • Sonos Like Spotify Wifi Speaker

    You can use both!I use mpd (controlled by mpdroid on my phone) for streaming radio and files on a nas drive.There's a feature of raspotify that allows you to run a command on start of play and on stop.When starting a spotify stream I pause mpd, when i stop spotify i play the radio. It gives me the best of both worlds.Pi zero W (10 uk pounds & sound card 2.5 ukp) makes a cheap radio and spotify connect. I have 2 in different rooms.I'll try dig out i2s config details.

    Hi,It's nice to see someone else doing this with a Pi.I have been using a raspberry pi to do this for years. You certainly don't need a pi4! a raspberry pi zero works very well.It hasn't got a 3.5mm jack but that's not a problem. The audio out of the 3.5mm jack on a pi is - well, awful.It seems ok until you try alternatives.A usb sound card works well and is a real improvement. a cheap one is MUCH beter than the standard Pi output.The best output is to use an I2S DAC. This does not have to be expensive.https://www.aliexpress.com/item/4000049217053.html...This one straight from China for less than 3 UK pounds is superb!No hiss or noise and CD quality!.Piggy-backs on top of Pi zero to give a tiny player!In case you think a pi zero isn't fast enough, mine streams internet radio (controlled v…

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    Hi,It's nice to see someone else doing this with a Pi.I have been using a raspberry pi to do this for years. You certainly don't need a pi4! a raspberry pi zero works very well.It hasn't got a 3.5mm jack but that's not a problem. The audio out of the 3.5mm jack on a pi is - well, awful.It seems ok until you try alternatives.A usb sound card works well and is a real improvement. a cheap one is MUCH beter than the standard Pi output.The best output is to use an I2S DAC. This does not have to be expensive.https://www.aliexpress.com/item/4000049217053.html...This one straight from China for less than 3 UK pounds is superb!No hiss or noise and CD quality!.Piggy-backs on top of Pi zero to give a tiny player!In case you think a pi zero isn't fast enough, mine streams internet radio (controlled via MPD), displays time, artist, song, station scrolling on a large (fruit machine) VFD.If you connect through spotify, it stops the radio and plays your spotify instead.The Pis are great!Best of luck!

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  • it'sgreat to encourage people to change their own oil - I always do.most people however do not have a garage lift.oil can be changed on your driveway with most cars.put a sheet of cardboard under car to keep any oil drips off your driveway.use an old oil bottle (5L or a gallon) with the side cut out as a"bowl" to collect waste oil once you undo the drain bolt.be careful, oil may be hot.leave oil drain for at least 10 minutes.change copper washer or o-ring when refitting drain plug.pour waste oil into a suitable bottle for disposal or recycling.(as we used an old oil bottle for our bowl we can carefully use the originalspout to pour it away)complications.....modern cars may have plastic undertrays that have to be removed.some cars do not have a dipstick. Yes, seriously - 2009 au…

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    it'sgreat to encourage people to change their own oil - I always do.most people however do not have a garage lift.oil can be changed on your driveway with most cars.put a sheet of cardboard under car to keep any oil drips off your driveway.use an old oil bottle (5L or a gallon) with the side cut out as a"bowl" to collect waste oil once you undo the drain bolt.be careful, oil may be hot.leave oil drain for at least 10 minutes.change copper washer or o-ring when refitting drain plug.pour waste oil into a suitable bottle for disposal or recycling.(as we used an old oil bottle for our bowl we can carefully use the originalspout to pour it away)complications.....modern cars may have plastic undertrays that have to be removed.some cars do not have a dipstick. Yes, seriously - 2009 audi A4.I hope this makes sense, computers are my trade, not cars!

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  • Nice Tek 465. I gave mine away two years ago after having it for 25 years. superb.good job on the XY plotting. how about a clock next?

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  • In the dot-matrix printer days, we would rejuvenate a ribbon by removing the cover, spraying with wd40 and leaving it overnight. worked a treat!

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  • I was horrified at the thought of someone drinking a wd40 substitute but Balistol is apparently Paraffin, Olive-oil, Alcohol and essential oils.I have heard of Paraffin being used as a laxative before.

    How about this one:Removing chewing-gum from kids' hair.(obviously - don't spray it on the scalp) , just on the hair, tease out the chewing-gum, then wash hair to remove WD40.A lot better that cutting it out and the kid looking like dad cut his/her hair! Why the hell do kids do it?

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  • Well, I'm amazed that nobody has mentioned "BLOWTORCH"Simply hold a lighter flame or match near the jet of WD40 spray.Be careful of your hands/hair/kids/wife/dog or anything else near.Your eyebrows and arm hair will grow back.Do not try this at home kids.The first time I tried it, "WWOOOOOWWW!"Honestly superb.Seriously though, be careful.It gives a flame like lighting a gas-tap in chemistry class at school.(I didn't tell you that....)

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  • Nice write-up!I used a 32GB card (class 10 13UKP) and a PS£ sixaxis controller - it needs no adapter! the PI3 has bluetooth and connects perfectly!

    Nice write-up!I used a 32GB card (class 10 13UKP) and a PS3 sixaxis controller - it needs no adapter! the PI3 has bluetooth and connects perfectly!

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  • Nice project.a couple of possible add ons. .multiple leds for illumination - the one led only uses 1.2v so the rest is getting wasted on the resistor. you could safely put 4 or 5 in series, giving much more light and take no more power.also, maybe consider 940nm leds - they give absolutely no visible light output whereas the 850nm ones glow a dull red (visible in the dark)great idea using cheap camera and monitor though!

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  • andybiker commented on Jules1050's instructable PlexiClock

    If you have an engraver and you're putting segments on plexiglass, why not re-create a vintage edge-lit display?These were made by drilling about 100 dots (you could engrave) for each digit in each piece (0-9), Just make sure no two dots overlapYou would need 10 x 4 = 40 pieces instead of 28, but you're mostly there.Like Nixie displays it's nice to see numbers drawn instead of segments.Nice project though,I like it

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  • I did this to my watch too when I was in school.I had the only lcd watch around with white numbers on a black background.lcd watches were just becoming cheap and common. that was about 37 years ago....

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