Waterproof 10 Minute Timer

Story I went for a shower one day, was getting late for office. Running tight on time, but I didn't want to come out of hot shower in cold morning. Without any clock in my bathroom I was saying to myself "Lets enjoy the shower for few more minutes, I might be over estimating the time". Result: I got really late to my office. Solution: Put a clock in your bathroom. Nooooo. Why would I put a clock in my bathr ...

Read more

Build the Internet for your friend

Background A few years ago, a co-worker turned me on to this TV program called "The IT Crowd". The show revolves around a two-person IT team and their "Relationship Manager", Jen, who inadvertently landed the job by including some basic PC skills on her resume. Moss and Roy resent her for getting the position both wanted, and will occasionally try to help expose Jen as a hopeless non-technical leader that h ...

Read more

Arduino : Lead Acid Battery Capacity Tester (Updated)

Story Yosh ! At last, finished working on this project. I have been working on this project for a while, then got bored and left the remaining work ( mostly firmware ) for a couple of months, ah ! the longest project I ever did ! What's all this about ? This project is about discharging lead acid battery at a constant current to measure its actual capacity. Due to hardware and design constrain there are few ...

Read more

ATTiny Joule Thief NeoPixel

Introduction I've been fascinated with joule thief circuits since I made my first one.  It's amazing what all you can power from a single AA or AAA battery.  The only problem is you can't do much beyond light up an LED because the current isn't "always on".  With a couple of extra components, you can take your joule thief to the next level!  While this circuit isn't particularly useful other than draining d ...

Read more

PicoDuino = Digispak + RGB LED + Button + Relay Driver

Hardware components: Atmel ATTiny85 × 1 DigiSpark × 1 Software apps and online services: Arduino IDE   STORY StartFragment How to get FREE board Order 1pc Picoduino board Create project max. 30 days from order Write project steps on instructables ... Include link to my store Ebay or Tindie Write my message with link I refund your order with shipping to your paypall Bootloader - Micronucleus t85 variant ...

Read more

IR Thermometer, Stopwatch, Cooking Timer, Inactivity Tracker

Hardware components: Arduino UNO & Genuino UNO × 1 Adafruit MLX90614 × 1 Atmel AVR for Arduino 328P/168P/8A × 1 SparkFun 7-Segment Serial Display - Red 3 digit display used × 1 Breadboard (generic) 8x2 cm × 2 16 MHz Crystal × 1 Slide Switch × 1 30 mm Red Push Switch any big red push switch × 1 22 mm White Push Switch × 1 Buzzer × 1 Colored pin header (generic) × 1 MLX90614 IR Temperature Sensor × 1 LED ...

Read more

DIY Programmable (SCPI) Bench Power Supply

Hardware components: Arduino Due × 1 LTC3864 × 2 Texas Instruments TL783 × 2 Texas Instruments REF5025 × 2 Texas Instruments DAC8552 × 2 ADG465 × 2 Texas Instruments TS5A9411 × 2 Texas Instruments ADS1120 × 2 Texas Instruments Quad Comparator × 2 Texas Instruments TLC5925 × 1 Silicon Labs Si8641EC-B-IS1 × 2 Silicon Labs SI8651EC-B-IS1 × 2 Texas Instruments LD1117ADT33TR × 1 NXP PCA21125 × 1 Atmel AT25256B × ...

Read more

Zoned Climate Control with MediaTek’s LinkIt™ Smart 7688

Hardware components: MediaTek Labs The MediaTek LinkIt™ Smart 7688 platform × 1 Everything ESP ESP8266 ESP-01 × 1 Arduino Nano R3 × 1 Atmel ATTiny85 × 1 DHT22 Temperature Sensor × 1 Servo (generic) × 1 Software apps and online services: Arduino IDE STORY Winter is coming When my wife and I had our first child last winter, we got an electric space heater to keep the area immediately around our baby girl nice ...

Read more

Infrared Dedicated Decoder

Hardware components: Atmel ATTiny85 × 1 Attiny85 IR code for Sony protocol Attiny85 IR code for Sony protocol Download /* IR remote control (Sony) detection for Arduino, M. Burnette Binary sketch size: 2,794 bytes (of a 8,192 byte maximum) ☺ 20130103 MRB Modified for interface to Mega2560 Europa codebase for menu system ☺ 20121230 MRB Modified for Tiny85 Google Tiny library Tiny85 Internal RC 16MHz ☺ 201212 ...

Read more

Attiny85/84 with Bluetooth

Hardware components: Capacitor 10 µF × 1 Atmel ATTiny85 × 1 Arduino UNO & Genuino UNO × 1 LED (generic) × 1 Jumper wires (generic) × 1 HC-05 × 1 Software apps and online services: Arduino IDE MIT App Inventor 2   STORY Here I have used HC -05 bluetooth module which can be purchased from ebay at a very low cost.eto Attiny85/84 .In this tutorial I won't be going in detail about how to upload the sket ...

Read more

NXP Kinetics Smart Web Multimedia IoT – Flexduino Platform

Hardware components: NXP Kinetis Freedom Board with FlexIO ×1 ATMEL WINC1500 WIFI MODULE ×1 OV7670 CAMERA MODULE ×1 WM7236 MEMS MICROPHONE ×1   STORY ABSTRACT The project aim is to build an Arduino like development environment that takes advantage of FlexIo advance driver module to build new drivers and interface with high speed multimedia devices such as camera, digital microphones, among others. This proj ...

Read more

IR Controller for Air Conditioner

Hardware components: Atmel ATTiny85 × 1 Everything ESP ESP8266 ESP-01 × 1 Arduino Nano R3 × 1   STORY My goal is to make my window AC units more functional.  Currently they use an on-board thermostat to turn on when the room gets above a certain temperature ('duh).  I feel like there is a lot I can do to improve on both the efficiency (less electricity usage) and performance (cooler house throughout th ...

Read more
Scroll to top