0.91 inch OLED display targets wearables
Winstar's WEO012832F is a small OLED display featuring 128x32 pixels in a 0.91 inch diagonal screen, suitable for wearable devices. by Julien Happich @ edn-europe.com: The WEO012832F module comes with a built-in SSD1306BZ controller IC, it supports an I 2C interface and a 14-pin FPC...
Continue ReadingHIGH RESOLUTION AND ACCURACY CHRONOGRAPH
"pinko" build a high resolution chronograph which has some great features. Check it out: This is a project is for chronograph that was purposely build for a good friend of mine to be used for accurate measuring of high speed processes. I am using two timers and the chronograph has...
Continue Reading5V @ 2A Step Down Converter using TPS54202
The circuit shown here is a step down converter which can convert an input voltage varying from 8V to 28V to 5V. The circuit is based on TPS54202, which is a 2A synchronous buck converter. This IC has several features such as over-voltage protection and peak current mode...
Continue ReadingOpen source 12V powerbank
A custom 12V powerbank for Cube i7 Stylus from Muxtronics: Why would anyone even try to build a power bank – i.e. an external battery for charging mobile devices – these days? These things are commodity, it’s impossible to compete. Right? Well, that is until you find out that...
Continue ReadingTiny CW Capacitive Touch Paddle
Edgar implemented capacitive touch sensing using an ATTiny4 to create a touch paddle for Morse code: Like many no-code operators, after being on the air for a while, I developed an interest and appreciation for Morse Code [..] I purchased a cheap paddle, but I found the clicking...
Continue ReadingASUS Tinker Board Competing Raspberry Pi
Raspberry Pi has been the household name for many years now, and many other companies have tried to replace it with their offering, but no one sussed to replace Raspberry Pi by performance and low-cost. Though, that might change as ASUS are entering the arena with their 90MB0QY1-M0EAY0...
Continue ReadingTINY LOAD CELL AMPLIFIER
pinko @ blog.exrockets.com wanted to test some cheap load cells so he decided to build his own load cell amplifier. He writes: Both IA are Rail-to-Rail, single or dual power supply instrumentation amplifiers, however with different standard pin-outs. The gain is set by RG. RR1 and...
Continue Reading2 Digit Kitchen Timer 00-99 Seconds or 00-99 Minutes
The projects shown here is a 2 Digit 00-99 Seconds or 00-99 Minutes Countdown kitchen timer based on PIC16F1825 micro-controller. The timer is useful in various applications like Cooking, Sports, Industrial, Sleeping. On board switches provided to set the time and start, a jumper to...
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