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- kiwigrinder made the instructable Home Sound System
- kiwigrinder made the instructable Home Sound SystemView Instructable »
These modules are great. Designed a 3D printed case fit module, added a small speaker an a TEA2025 Mono Bridge amplifier. Works great
- kiwigrinder commented on Frugha's instructable 7 Segment Display ArrayView Instructable »
See https://www.hackster.io/john-bradnam/7-segment-array-clock-cd5b07
- kiwigrinder commented on Frugha's instructable 7 Segment Display ArrayView Instructable »
I used 0.28" 7 Segment displays on my build making it only quarter of the size. It then becomes a desktop alarm clock.
- kiwigrinder made the instructable 7 Segment Display ArrayView Instructable »
My quarter size desktop alarm clock variant - Build instructions at https://www.hackster.io/john-bradnam/7-segment-array-clock-cd5b07
- kiwigrinder commented on EDISON SCIENCE CORNER's instructable Vu Meter Using Neopixel LedsView Instructable »
Can you please provide the password to the "neopixel vumeter.zip" file. Thanks
- kiwigrinder commented on teslahed's instructable Arduino Controlled Sound Responsive LED Display
Thanks teslahed for an interesting project. I made the following changes:Replaced Arduino Nano with a ATtiny1614 microprocessorAdded a PCB for the componentsCreated a new smaller base to hold the electronics and displayAdded a cover around the display to hide the LED boards and wiringNew software with more animationsMy variant can be found at https://www.hackster.io/john-bradnam/sound-responsive-led-display-8bd82b
View Instructable »Thanks for the suggestion.
- kiwigrinder made the instructable Arduino Controlled Sound Responsive LED DisplayView Instructable »
Thanks teslahed for an interesting project. I made the following changes:Replaced Arduino Nano with a ATtiny1614 microprocessorAdded a PCB for the componentsCreated a new smaller base to hold the electronics and displayAdded a cover around the display to hide the LED boards and wiringNew software with more animationsMy variant can be found at https://www.hackster.io/john-bradnam/sound-responsive-led-display-8bd82b
- kiwigrinder commented on SimonRob's instructable Arduino Cyclone GameView Instructable »
Very cool. The finish you achieved is fantastic.
- kiwigrinder commented on thescientistformerlyknownasNaegeli's instructable Analog Clock Using Math, Arduino Pro Mini, DS3231 and Nokia 5110View Instructable »
Thanks for an interesting project. I tried to get it it to run on an ATtiny84 only to find out as I was programming it that 512 bytes of RAM is nowhere near enough for the LCD5110_Graph library. Had to design an adapter so that I could use one of the new ATtiny1614 processors.Instructions and files at https://www.hackster.io/john-bradnam/nokia-analog-digital-alarm-clock-bcadbd
- kiwigrinder made the instructable Analog Clock Using Math, Arduino Pro Mini, DS3231 and Nokia 5110View Instructable »
Thanks for an interesting project. I tried to get it it to run on an ATtiny84 only to find out as I was programming it that 512 bytes of RAM is nowhere near enough for the LCD5110_Graph library. Had to design an adapter so that I could use one of the new ATtiny1614 processors.Instructions and files at https://www.hackster.io/john-bradnam/nokia-analog-digital-alarm-clock-bcadbdVideo at https://youtu.be/fVh1YMsy_4M
- kiwigrinder commented on TecnoProfesor's instructable RGB LED Newton's CradleView Instructable »
Many thanks for an interesting project. My variant uses WS2812B Neopixel LEDs and an ATtiny1614 microprocessor. It is enclosed in a 3D printed case.Instructions: https://www.hackster.io/john-bradnam/neopixel-newton-light-cradle-a1c3d1Video:
- kiwigrinder made the instructable RGB LED Newton's CradleView Instructable »
Many thanks for an interesting project. My variant uses WS2812B Neopixel LEDs and an ATtiny1614 microprocessor. It is enclosed in a 3D printed case.Instructions: https://www.hackster.io/john-bradnam/neopixel-newton-light-cradle-a1c3d1Video:
- kiwigrinder followed Mobile, Lasers, Raspberry Pi, Gadgets and 3 others channel
- kiwigrinder made the instructable Ultrasonic EyesView Instructable »
I added a PCB and a base to mine. The HC-SR04 sensors need to be a closely "matched" pair. I found there are variations is their sensitivity. Overall it was a enjoyable build. Thank you for your design.
- kiwigrinder commented on indoorgeek's instructable LED Mood LampView Instructable »
Nice job. I made something like this not long ago. I used cheap 4x4 RGB LED Matrix Displays from eBay. It is controlled by a ATtiny85 micro-controller. All components including the battery and mercury switch to turn it on are inside the cube itself. Details of the construction is at https://www.thingiverse.com/thing:4022751
- kiwigrinder made the instructable Arduino Slot MachineView Instructable »
Cool Instructable - Had a lot of fun making my variant of it - Many thanks Build is on https://www.hackster.io/john-bradnam/matrix-slot-m... Video is on https://youtu.be/uVVO2sKtm0U
- kiwigrinder made the instructable DIY Aurduino LED GameView Instructable »
https://www.thingiverse.com/thing:4017458This variant has some additional features. Thanks for a interesting project
- kiwigrinder commented on Utsav_25's instructable DIY Power Measurement Module for Arduino
Thankyou
View Instructable »Hi Utsay_25Could you please check the "Arduino power meter module.txt" that you have uploaded. It doesn't appear to contain any code.Cheers.
- kiwigrinder commented on WilkoL's instructable LCD Display 16x2 on 3.3VView Instructable »
Most 1602 LCD boards already support running at 3.3V. If you look at the back of the board, you will notice some pads for missing components. By soldering a ICL7660 or MAX660 for U3 and two 1206 10uF caps for C1 & C2, removing the solder from jumper J1 and soldering a bridge between J3, you can run your LCD from a 3V3 supply. The extra components create a charge pump that generates a -2V supply for the LCD from the 3V3 supply.
- kiwigrinder made the instructable Arduino Digital Clock With Alarm Function (custom PCB)View Instructable »
Resigned PCB to use a right angle header to join main PCB and 1602 LCD display. Eagle files & sketch at https://www.thingiverse.com/thing:3877747
- kiwigrinder commented on rgco's instructable Arduino SoundlabView Instructable »
Thanks for a fun project. My make of your project is at https://www.instructables.com/Arduino-Soundlab/. Cheers
- kiwigrinder made the instructable Arduino SoundlabView Instructable »
Fun project. I used slider pots and made a custom PCB and printed a 3D case for it. See https://www.thingiverse.com/thing:3867189 for build instructions.
- kiwigrinder commented on WilkoL's instructable High Resolution Frequency CounterView Instructable »
Thankyou
- kiwigrinder commented on WilkoL's instructable High Resolution Frequency CounterView Instructable »
Nice instructable. I would like to build this but the schematic PDF is not readable. Is there any chance you can upload another one please?
- kiwigrinder commented on tuenhidiy's instructable LED MATRIX TOUCH CONTROL
Nice instructable 👍A LED is also photo sensitive and can be used to detect light as well as emit it. I wonder if during the refresh cycle where the LED is not emitting light, you could use it as a photo diode and measure its photo sensitivity through a demultiplexer to an analog pin on the Arduino. 🤔
Nice instructableA LED is also photo sensitive and can be used to detect light as well as emit it. I wonder if during the refresh cycle where the LED is not emitting light, you could use it as a photo diode and measure its photo sensitivity through a demultiplexer to an analog pin on the Arduino.
View Instructable »Nice instructable 👍A LED is also photo sensitive and can be used to detect light as well as emit it. I wonder if during the refresh cycle where the LED is not emitting light, you could use it as a photo diode and measure its photo sensitivity through a demultiplexer to an analog pin on the Arduino.
- kiwigrinder commented on wnorman's forum topic When I click the Download all that comes up is {"error": "Sorry, we couldn't find that one!"}View Topic »
Same :-(
- kiwigrinder commented on lb_20's instructable RGB LED Strip With Dimmers on RGB Lines and Colour OrganView Instructable »
Cool project. Kudos!I noticed that the schematic in the attached ZIP file is different from the one you have included in this instructable. (The one included in this instructable simply wont work).The one in the ZIP file will work sort of.1. There is an erroneous connection connecting C7, R9, R10 & D12. This has the effect of shorting R10 and passing the audio signal to ground via D12.2. D10 & D11 serve no purpose. Just wire LED1R, LED1G & LED1B anodes to +12V.3. Transistors are current devices. The base on the NPN draws current and should be limited by a resistor. D14, D13 & D2 should be replaced with a resistor to limit the base.4. MOSFETs are voltage devices so theoretically the gate shouldn't draw or sink current. However MOSFETs aren't perfect. A 10K resistor in seri…
see more » - kiwigrinder commented on jbumstead's instructable "Fiber Optic" LED Matrix
The round hole for the glue stick stops just above the square hole for the WS2812B. So it sits very close but doesn't touch it. It also stops the glue stick from going right though. It makes it a bit hard to put all the glue sticks in place when joining the top and bottom sections, but because they are flexible, you can do it with a bit of patience.
View Instructable »Fantastic design. Since I don;t have access to a laser cutter, my variant of your make is 3D printed. It uses WS2812B LED strips and 7mm x 100mm glue sticks to keep the cost down. (https://www.thingiverse.com/thing:3403301).
- kiwigrinder made the instructable "Fiber Optic" LED MatrixView Instructable »
The goal was to replace the 12mm Diffused Digital RGB LEDs with cheap WS2812B RGB strips and to make the container for the LED's and electronics as thin as possible allowing cheaper 7mm Glue Sticks to be used. Cabinet is 3D printed and a PCB make using the toner method holds the electronics. STL, Eagle files and Arduino sketch is available at https://www.thingiverse.com/thing:3403301
- kiwigrinder commented on Nematic!'s instructable Google Assistant Controlled LED Matrix !View Instructable »
The datasheet for the MAX7219 shows that the minimum voltage is 4V. Running it from a 3.3V supply is not recommended.
- kiwigrinder commented on mimikamp's instructable LM3916 LED Chip AlternativeView Instructable »
Your circuit emulates a LM3914 chip which uses a linear resistor ladder where all resistor values are 1K ohms .The LM3915 chip uses a logarithmic resistor ladder where the values are 1K, 0.41K, 0.59K, 0.83K, 1.17K, 1.66K, 2.34K, 3.31K, 4.69K, 6.63K ohms. The LM3916 chip uses a VU scale and the resistor ladder values are 708, 1531, 923, 819, 1031, 1298, 769, 864, 970 and 1087 ohms.
- kiwigrinder commented on funelab's instructable Arduino Air Bonsai LevitationView Instructable »
Nice work. Do you have a template for the acrylic sheet?
- kiwigrinder commented on SkyflikS's instructable PIC16F1847 and AR1010 Based FM Radio Music BoxView Instructable »
Can you please provide the eagle files and the max7219 library that you used. Thankyou
- kiwigrinder commented on liquidhandwash's instructable Electronic Projects for BeginnersView Instructable »
The Electronic LED Hourglass uses STC15W201S microcontroller. This is basically an enhanced 8051 microcontroller which is a INTEL based design. PIC processors are from Microchip and use a completely different instruction set and architecture
- kiwigrinder commented on The_Technocrat's instructable PCB Etching Using Laser Printer (Toner Transfer Method)View Instructable »
I always drill my boards directly after the etch while the toner is still on. It is a lot easier to see the holes.Also once you clean off the toner, spray the copper side with PCB Lacquer otherwise overtime the copper will oxide and turn green.
- kiwigrinder commented on AlanH87's instructable Light Painting RobotView Instructable »
Great looking animations. Pity you can't see them in real-time.Is there a reason to use the 4 neopixels?A single RGB LED should be able to the same job (you would need to paint the animation more times, but it should still look the same on time lapse camera). A single LED should be lighter and less taxing on the stepper motor that controls the arm.
- kiwigrinder commented on enzosaudi's instructable RoboBin || Garbage Catching BinView Instructable »
Where is the fun in that? :-)
- kiwigrinder commented on T_Agilan's instructable LED Infinity Mirror (100% Working)
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- kiwigrinder followed lasers, leds, microcontrollers, arduino and 5 others channel
Salvaged a working PC speaker system from Council Pickup day and added one of these modules. Works great as my workshop radio and PC speaker system. The radio in this module works way better than the last version I made. Modules still around the same price.