Content for PCB

-5V @100mA Switched Capacitor Converter

“The circuit diagram presented here is about a negative voltage regulator. It is based on LT1054, which is a switched capacitor voltage converter with regulator from Texas instrument. This device has many advantages over other previously available switched capacitor voltage …

NodeMCU Home Weather Station

“Make your own home weather station. The device measures temperature, humidity and light. All data are send to a website name Ubitos.com. “

Password Manager, Typer, Macro, Payload … All in ONE!

“Often I need to log in to my mail accounts or to log in to my University profile from a pc that is not mine. I tipically use 10 characters or more password using numbers, symbols, upper and lower case …

VESC – Open Source ESC

“I have made many updates to my custom motor controller recently and the old post is getting confusing with notes and updates, I decided to write a new post about it that hopefully is more clear, more complete and easier …

Interactive LED Dance Floor

“Recently I was involved in a project to build a giant LED dance floor for a convention.”

Solar power meter

“Solar power meter measures the voltage, current and power of my 40W solar panel. On the PCB are two electrolytic capacitors, connectors, 3.3V stabilizer, ESP-01, voltage and current sensor INA219. OLED display is screwed to the box. The …

O2 Sensor Tester ( Lambda Sensor)

“O2 sensors do wear out and eventually need to be replaced. The performance of the O2 sensor tends to diminish with age as contaminants accumulate on the sensor tip and gradually reduce it’s voltage. This is caused by substances …

Wifi Controlled Car / IOT Bot

“In this Instructable, you will learn to make a WiFi Controlled Car and also to make an App for it(without coding). You will need no prior knowledge on App making . The knowledge gained from this project can also be …

IoT Controlled Planter Lights

“My wife wanted to be able to start planting seeds here in a week and also wanted to have an indoor shelf with lights on which to start them. The plants need significant light, and it’s cold enough outside …

wozItDo: Tiny IQ puzzel, BIG challenge

“I think of this puzzle as the electronic equivalent of those annoying “IQ” puzzles (e.g. where you have to get two parts apart). A wozItDo has just one button and three LEDs and all you have to do is …