0-20V Bargraph Voltmeter

https://www.electronics-lab.com/0-20v-bargraph-voltmeter/

0 – 20V LED Voltmeter kit displays the voltage of the source using 20 LED’s. This projects is based on the famous LM3914 IC from National Semiconductor. Power Supply Input: 5 VDC Max @ 30 mA in DOT mode and 300 mA in BAR mode 0-20V Bargraph Voltmeter – [Link]