Thingiverse
Arduino ATX Lab Bench Power Supply by tronix
by Thingiverse
Last crawled date: 3 years, 3 months ago
DIY Lab Power Supply Project with variable output controlled using an Arduino.
All other outputs 3.3V, 5V and 12V will be monitored by Arduino.
Plan is to use parts/modules easily and cheaply available from Aliexpress.
Case designed to fit any standard ATX power supply (Requires drilling of 4 holes in PSU)
Can be printed without supports, I have included a .3mm layer in the screw holes to create a platform to keep the print tidy - these will need to be push/drilled out after printing.
GND
3.3V
5V
12V
Variable (controlled by Arduino)
USB port wired to 5vsb connection on PSU (standby) which will allow you to charge a phone with the PSU turned off. Most PSU 5vsb are around 2.5A
Parts List
4x M3 or M4 screws and nuts
4mm Banana Terminals Size: 29.66x14.35mm
https://www.aliexpress.com/item/5-Pcs-4mm-Banana-Plugs-Female-Jack-Socket-Plug-Wire-Connector-5-Colors-L15/32832112136.html
6.3mm Spade Crimps - (these terminals are not easy to solder to without damaging plastic)
https://www.aliexpress.com/item/100pcs-Brass-Crimp-Terminal-2-8-4-8-6-3mm-Female-Spade-Connectors-with-100pcs-Insulating
3mm LEDs for 5vsb and power ok
https://www.aliexpress.com/item/100Pcs-lot-5-Colors-F3-3MM-Round-LED-Assortment-Kit-Ultra-Bright-Water-Clear-Green-Yellow/32731355560.html
Type A Female USB Port
https://www.aliexpress.com/item/10Pcs-Type-A-Female-and-A-Male-USB-4-Pin-Plug-Socket-Connector-With-Black-Plastic/32836938707.html
Epoxy Resin to mount USB port
6mm toggle switch
https://www.aliexpress.com/item/10pcs-MTS-101-2-Pin-SPST-Switch-ON-OFF-2-Position-6A-250V-AC-Mini-Electrical/32875986424.html
Arduino Nano (Clone is fine)
https://www.aliexpress.com/item/Freeshipping-Nano-3-0-controller-compatible-for-arduino-nano-CH340-USB-driver-NO-CABLE/32341832857.html
1602 i2c LCD
https://www.aliexpress.com/item/LCD1602-I2C-LCD-1602-module-Blue-screen-IIC-I2C-for-arduino-LCD1602-Adapter-plate/32651314933.html
4 x Voltage sensor/divider
https://www.aliexpress.com/item/Smart-Electronics-DC0-25V-Standard-Voltage-Sensor-Module-Test-Electronic-Bricks-for-arduino-Robot/32823612964.html
ACS712 Current Sensor
https://www.aliexpress.com/item/Freeshipping-20A-ACS712T-Current-Sensor-Module-ACS712-Module-Wholesale/2038554992.html
Will upload sketch and schematic once tested.
All other outputs 3.3V, 5V and 12V will be monitored by Arduino.
Plan is to use parts/modules easily and cheaply available from Aliexpress.
Case designed to fit any standard ATX power supply (Requires drilling of 4 holes in PSU)
Can be printed without supports, I have included a .3mm layer in the screw holes to create a platform to keep the print tidy - these will need to be push/drilled out after printing.
GND
3.3V
5V
12V
Variable (controlled by Arduino)
USB port wired to 5vsb connection on PSU (standby) which will allow you to charge a phone with the PSU turned off. Most PSU 5vsb are around 2.5A
Parts List
4x M3 or M4 screws and nuts
4mm Banana Terminals Size: 29.66x14.35mm
https://www.aliexpress.com/item/5-Pcs-4mm-Banana-Plugs-Female-Jack-Socket-Plug-Wire-Connector-5-Colors-L15/32832112136.html
6.3mm Spade Crimps - (these terminals are not easy to solder to without damaging plastic)
https://www.aliexpress.com/item/100pcs-Brass-Crimp-Terminal-2-8-4-8-6-3mm-Female-Spade-Connectors-with-100pcs-Insulating
3mm LEDs for 5vsb and power ok
https://www.aliexpress.com/item/100Pcs-lot-5-Colors-F3-3MM-Round-LED-Assortment-Kit-Ultra-Bright-Water-Clear-Green-Yellow/32731355560.html
Type A Female USB Port
https://www.aliexpress.com/item/10Pcs-Type-A-Female-and-A-Male-USB-4-Pin-Plug-Socket-Connector-With-Black-Plastic/32836938707.html
Epoxy Resin to mount USB port
6mm toggle switch
https://www.aliexpress.com/item/10pcs-MTS-101-2-Pin-SPST-Switch-ON-OFF-2-Position-6A-250V-AC-Mini-Electrical/32875986424.html
Arduino Nano (Clone is fine)
https://www.aliexpress.com/item/Freeshipping-Nano-3-0-controller-compatible-for-arduino-nano-CH340-USB-driver-NO-CABLE/32341832857.html
1602 i2c LCD
https://www.aliexpress.com/item/LCD1602-I2C-LCD-1602-module-Blue-screen-IIC-I2C-for-arduino-LCD1602-Adapter-plate/32651314933.html
4 x Voltage sensor/divider
https://www.aliexpress.com/item/Smart-Electronics-DC0-25V-Standard-Voltage-Sensor-Module-Test-Electronic-Bricks-for-arduino-Robot/32823612964.html
ACS712 Current Sensor
https://www.aliexpress.com/item/Freeshipping-20A-ACS712T-Current-Sensor-Module-ACS712-Module-Wholesale/2038554992.html
Will upload sketch and schematic once tested.
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