Uploaded June 2019 | Updated September 2026, 1 week ago
In this video I have five different soft power latching circuits for your Arduino or any microcontroller you may be using! Each has its own advantages and unique properties and I have tested each circuit from 9-12.6V.
A soft latching circuit has the advantage of using a modern, intuitive, and low cost tactile momentary switch / button to power your device on and off. Most consumer products are currently using a single press on, and long press off type of power button, and your Arduino should too!
Additionally, since none of the current flows through the small tactile switch, it does not have to be sized to accommodate your main load. This keeps the size and cost down for your project and latching circuit.
If you're looking to prototype your own circuits, check out the breadboarding super kit below. As an amazon associate I may earn a small commission (at no extra cost to you)
► amzn.to/4ddDPiD
Get even more sensors, displays, servos, LEDs, jumpers, resistors, etc:
► amzn.to/4dghz7w
I cannot claim to have designed these circuits myself so I would like to give a special thanks to the following members of the EEV blogs forum who assisted, found, or outright designed these circuits in a forum post that can be found here:
eevblog.com/forum/beginners/push-button-power-circuit-for-arduino-trying-to-modify-it-for-12v-input
Special thanks goes to Peabody, MarkF, Ian.M, Zero999 for creating or suggesting these schematics.
Since many of these circuits use SMT packages, I found DIP replacements for some of these packages so that I could breadboard the circuit.
Circuit 1:
BC414 was replaced with BC547ATACT
Circuit 2:
IRF7319 was replaced with IRF7309
BAV99 was replaced with 1N4454
Circuit 3:
IRF7207 was replaced with SFT1342-W
BSS123 was replaced with TN0610N3
BAT54 was replaced with BAT85S
Circuit 4:
FDC638P was replaced with NDP6020P
2N7002 was replaced with VN2222LL
BAT54 was replaced with BAT85S
Circuit 5:
instructables.com/id/Soft-Latch-Power-Switch-Ardweeny
As always, thank you for watching my video and if you have any questions, please leave them in the comments section below! I will always do my best to respond to everyone!
****************************************************************
If you enjoy and have benefited from my content and are feeling generous I would love your support! You can "buy me a coffee" here:
► paypal.com/donate/?hosted_button_id=V2T6MEFUGP73Y ☕
By supporting my channel you are encouraging me to continue with this time consuming endeavor. A lot of time goes into design work, building my projects, filming the videos, editing the videos, etc. Plus it all costs money! Your generosity goes a long way in helping me bring you better content as often as I can!
Follow me on Instagram!
► instagram.com/embraceracing 📷
If you liked this video, perhaps you will also enjoy some channels that I personally find inspiring and interesting...
DIY and MAKER:
► The Hacksmith
youtube.com/channel/UCjgpFI5dU-D1-kh9H1muoxQ
► Adam Savage Tested
youtube.com/channel/UCiDJtJKMICpb9B1qf7qjEOA
► Thomas Sanladerer
youtube.com/user/ThomasSanladerer
Car Content:
► Mighty Car Mods
youtube.com/channel/UCgJRL30YS6XFxq9Ga8W2J3A
► Drivetribe
youtube.com/channel/UChiwLDIBJrV5SxqdixMHmQA
#Arduino #Electronics #DIY
In this video I have five different soft power latching circuits for your Arduino or any microcontroller you may be using! Each has its own advantages and unique properties and I have tested each circuit from 9-12.6V.
A soft latching circuit has the advantage of using a modern, intuitive, and low cost tactile momentary switch / button to power your device on and off. Most consumer products are currently using a single press on, and long press off type of power button, and your Arduino should too!
Additionally, since none of the current flows through the small tactile switch, it does not have to be sized to accommodate your main load. This keeps the size and cost down for your project and latching circuit.
If you're looking to prototype your own circuits, check out the breadboarding super kit below. As an amazon associate I may earn a small commission (at no extra cost to you)
► amzn.to/4ddDPiD
Get even more sensors, displays, servos, LEDs, jumpers, resistors, etc:
► amzn.to/4dghz7w
I cannot claim to have designed these circuits myself so I would like to give a special thanks to the following members of the EEV blogs forum who assisted, found, or outright designed these circuits in a forum post that can be found here:
eevblog.com/forum/beginners/push-button-power-circuit-for-arduino-trying-to-modify-it-for-12v-input
Special thanks goes to Peabody, MarkF, Ian.M, Zero999 for creating or suggesting these schematics.
Since many of these circuits use SMT packages, I found DIP replacements for some of these packages so that I could breadboard the circuit.
Circuit 1:
BC414 was replaced with BC547ATACT
Circuit 2:
IRF7319 was replaced with IRF7309
BAV99 was replaced with 1N4454
Circuit 3:
IRF7207 was replaced with SFT1342-W
BSS123 was replaced with TN0610N3
BAT54 was replaced with BAT85S
Circuit 4:
FDC638P was replaced with NDP6020P
2N7002 was replaced with VN2222LL
BAT54 was replaced with BAT85S
Circuit 5:
instructables.com/id/Soft-Latch-Power-Switch-Ardweeny
As always, thank you for watching my video and if you have any questions, please leave them in the comments section below! I will always do my best to respond to everyone!
****************************************************************
If you enjoy and have benefited from my content and are feeling generous I would love your support! You can "buy me a coffee" here:
► paypal.com/donate/?hosted_button_id=V2T6MEFUGP73Y ☕
By supporting my channel you are encouraging me to continue with this time consuming endeavor. A lot of time goes into design work, building my projects, filming the videos, editing the videos, etc. Plus it all costs money! Your generosity goes a long way in helping me bring you better content as often as I can!
Follow me on Instagram!
► instagram.com/embraceracing 📷
If you liked this video, perhaps you will also enjoy some channels that I personally find inspiring and interesting...
DIY and MAKER:
► The Hacksmith
youtube.com/channel/UCjgpFI5dU-D1-kh9H1muoxQ
► Adam Savage Tested
youtube.com/channel/UCiDJtJKMICpb9B1qf7qjEOA
► Thomas Sanladerer
youtube.com/user/ThomasSanladerer
Car Content:
► Mighty Car Mods
youtube.com/channel/UCgJRL30YS6XFxq9Ga8W2J3A
► Drivetribe
youtube.com/channel/UChiwLDIBJrV5SxqdixMHmQA
#Arduino #Electronics #DIY
