The Qwiic Power Switch is a simple little board which can be used to switch the power to your Qwiic system. Many Qwiic boards draw very little current when not being used, but there are some that draw ...

12 thoughts on “ Arduino Switch Box ” jme says: December 5, ... Hard Drives And Power Grids Oscillating Out Of Control 2 Comments Last Chance: 2025 Hackaday Supercon Still Wants You!

In this video, the author is showing how he connected $10 SainSmart 8 Channel DC 5V Relay Module to an Arduino microcontroller (You can also connect Raspberry Pi) and how how he builds an 8 channel ...

As seen in the above schematic, a 5-V DC supply from the USB connector (USB) is routed to two 10-Ω/5-W power resistors (R1 and R2) through an SPST switch (S1) followed by an SPDT switch (S2). Here, S1 ...

When power is turned on, the circuit goes into standby mode, ... When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available ...

However, in many small power customers, the switch-over must be done manually. This paper describes the design and construction of such an automatic transfer switch (ATS) being affordable to be built ...

When power to the circuit is switched on by closing switch S1, the power LED in the Arduino board will glow. Now download the latest Arduino software from here and install it in your PC. Compile the ...

This is a simple project. It uses an Android device to switch an LED driven by the Arduino. Connectivity is provided by the Bluetooth module inserted in the breadboard. But one look at the UI on th… ...

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go.

GPIO0 switches the Qwiic power via a P-FET. If GPIO0 is high, power is enabled. GPIO1 and GPIO2 are general purpose pins which can be used for input or output. GPIO3 can isolate the I2C bus via a ...