Spread Spectrum LED driver

LT3795 - 110V LED Controller with Spread Spectrum Frequency Modulation Features 3000:1 True Color PWM™ Dimming Wide Input Voltage Range: 4.5V to 110V Input and Output Current Reporting PMOS Switch Driver for PWM and Output Disconnect Internal Spread Spectrum Frequency Modulation ±2% Constant Voltage Regulation ±3% Constant Current Regulation: 0V ≤ VOUT ≤ 110V Programmable Input Current limit   CTRL Inp ...

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Trinket Powered Analog Meter Clock

Overview Trinket lends itself very well to building clock projects, its small and easy to hide behind a larger display. And clocks don't need a lot of logic, this example only has maybe 20 lines of code. Adding a digital display via I2C is possible using seven segment or character-based displays (with the library code posted for other projects). This project interfaces Trinket to the the Adafruit DS1307 rea ...

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Heat Sink Mounting Guide

Summary This document provides guidelines for mounting heat sink s for the proper thermal management of power semiconductor devices in field applications. This document describes heat - sink mounting methods , considerations, contact thermal resistance, and mounting torque for various pack ages. A milled or machined surface is satisfactory if prepared with tools in good working condition. The heat sink moun ...

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USB sound card made from a broken USB headphones

If you have old USB headphones you can easily transform them to a USB sound. This card can be helpful during testing of home built devices connected to the speaker or microphone ports on the PC (for example A proof of concept of a simple sonar and Constructing a homemade microphone). I used broken Audio 655 DSP headphones with working electronic inside. They have below features: Powered from USB. Stereo out ...

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Mini weather station

In this project, we will be making a mini weather station that measures temperature and humidity and transmits them wirelessly to a ground station, which displays the readings on an LCD display! It’s a fairly easy project and can be used either on its own or part of something bigger. Step 1: List of materials For this project, we will be using: - RF 433 transmitter/receiver module cost: ~2.00 USD - DHT11 Hu ...

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3A Unipolar Stepper Motor Driver

This cranial electrotherapy stimulator is a medical treatment that makes use of electrical energy to treat anxiety, depression and insomnia. It is a therapeutic tool to help heal the body, which primarily uses an electrical current to stimulate nerves and muscles through the skin. This device uses a few components such as 555 timer, decade counter and the TE connectivity’s slide switch and trimmer. This TE ...

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The PinTin Nano – Your Edison-Based Password Keeper

Hi, I'm Daniel, a professional software developer. This is my very first instructable, and I'm über-excited. I hope you'll like. :) With this instructable, I try to solve a problem everyone has: Passwords. Accounts. Logins. All the stuff you need to get into your favourite social media site, shopping site, blog or forum (they still exist, huh?). Now, there are several ways to control your accounts: Use alwa ...

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The PinTin Nano – Your Edison-Based Password Keeper

Hi, I'm Daniel, a professional software developer. This is my very first instructable, and I'm über-excited. I hope you'll like. :) With this instructable, I try to solve a problem everyone has: Passwords. Accounts. Logins. All the stuff you need to get into your favourite social media site, shopping site, blog or forum (they still exist, huh?). Now, there are several ways to control your accounts: Use alwa ...

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Do you know Hirschman ST industrial connectors?

A word „versatility“ describes well know series Hirschmann ST (STA) perhaps the besgt. ST connectros are universal because as for paramaters, they´re sufficient for majority of applications (16A/250VAC) and they maintain a decent compcáctness. At the same time, they´re available in many versions (M/F, panel/ cable) , so we can create a desired combination – cable/cable, cable/panel. ST connectors have 2,3,4 ...

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Cranial Electrotherapy Stimulator

his cranial electrotherapy stimulator is a medical treatment that makes use of electrical energy to treat anxiety, depression and insomnia. It is a therapeutic tool to help heal the body, which primarily uses an electrical current to stimulate nerves and muscles through the skin. This device uses a few components such as 555 timer, decade counter and the TE connectivity’s slide switch and trimmer. This TE c ...

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