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“Today Carbon Monoxide (CO) meters are available in different forms. Overall, Carbon Monoxide meters sense CO fast and display the amount to the user and trigger alarm if it reaches a critical level. Compare with most of the DIY Carbon …
“The circuit board presented here enables the exact mains frequency measurement of the power supply system (50 Hz and 60Hz). It is universally constructed and can be operated with a RaspberryPi 3/4 as well as with a USB-TTL …
“In this tutorial we will see how to make a water level meter circuit with the integrated uln2803.The printed circuit is included, the operation of the same will be explained, as well as we will see the characteristics.It …
“Yeah, I’ve really done that. It was hard, took me several days but I made it. In the end, it was an excellent experience and the most amazing thing is that Freeduino (that is how I call it) actually …
“SixPotatoe is the most recent in a line of self-balancing robots. You can see the entire lineup here: http://twopotatoe.net/. This robot was created for its high performance but also to be easy to build. It is controlled by …
“Introduction: In this Instructable you will learn how to control relays over Wifi using the Blynk App on your smart phone. Thus opening you up to the world of IoT devices. Supplies:The supplies that you will need are: - Particle …
“The Invisible Enemy “Pandemic,” it’s a scary word to hear. Especially when it’s accompanied by panic-buying of canned goods, pasta, and the disappearance of most disinfecting products from stores. As soon as various media outlets started filling up …
“Some of you may know that you can use yubikey’s as a gpg smart card for message encryption / ssh login however starting at $45 for a compatible one I didn’t really like that, so I searched a bit …
“This Power Timer is based on the timer presented at: https://www.instructables.com/id/Timer-With-Arduin… A power module and an SSR (solid state relay) were attached to it. Power loads of up to 1KW can be operated and with …
“Inrush current/Switch-ON surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Inrush current is much higher than the load’s steady-state current and that’s the source of many problems such …