# 8-Step Arduino Sequencer **URL:** \ **Category:** KOSMO MODULES\ **Created:** [March 28, 2020, 4:28pm UTC](https://lookmumnocomputer.discourse.group/t/8-step-arduino-sequencer/467 "2020-03-28T16:28:15Z")\ **Posts on this page:** 1\ **Showing post:** 168
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [June 7, 2020, 11:32pm UTC](https://lookmumnocomputer.discourse.group/t/8-step-arduino-sequencer/467/168 "2020-06-07T23:32:44Z")
There’s a diode from the USB power to the Arduino’s internal 5V rail, so you’ll get a slightly lower supply voltage and max signal level than if you use the correct voltages on the other supply pins, but the circuit should still work. See here for a bit more on the voltage drops you can expect on the different supply inputs: > [@Design glitches: Arduino Nano supply voltage](https://lookmumnocomputer.discourse.group/t/design-glitches-arduino-nano-supply-voltage/795): > > (thought I’d collect my nano supply notes in one place to make it easier to link to) A common design glitch in circuits that use an Arduino Nano is to connect regulated 5 V to the VIN pin instead of the +5V pin. This results in the Arduino running at a lower internal supply voltage, often 4 V or below, which may be a problem if the design depends on analog inputs or digital output levels. Voltages below 4.5 V are also out of spec for the 16 MHz clock used by the Nano. Details below, but TL;DR … --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/8-step-arduino-sequencer/467)._