HP Power supply (up to 1200w*) breakout board w/ ESP8266

(I use ESPhome and that is the example included) to control the Power supply remotely.

These are commonly used in the holiday lighting community (as I am on my show), so the features are geared towards this.

Features include

• PSMBus control/management of the power supply
  • PS Temps (There are two sensors) monitoring (in Fahrenheit)
  • AC Voltage, current (Amps) and power (watts) monitoring
  • DC Voltage, current (Amps) and power (watts) monitoring
  • PSU Fan speed monitoring and control.
  • PSU model detection (common PSU names pre-mapped in code)
• Analog measurement of power (As a backup in the event the PSMBus is not working/incompatible)
• PSU Failure/Alarm support (There is no real use for this outside of a PSU fan failure)
• Local and remote power supply power control
• Case/Box fan control for up to 2a of fans using standard PC style ¾ pin fans. Protected with Polyfuse, powered even with PSU is off.
• Environmental monitoring option via BME280 (Or any other i2c sensor via a header)
• Wifi signal strength

See Github for BOM.

HP breakout board for the Common Slot power supplies. Similar to Jboards design, however I added a header to remote control the power suppy via a ESP-01 relay board and a buck converter.

J4 is a standard 2.54mm pin header.

Pin 1 - Power On - Ground to enable power output. Pin 2 - Vsb - 12v standby power - run this to a 5v buck converter (like a Pololu D36V6F5) then to your ESP-01 Pin 3 - Ground

R1 is a 21k or 22k 1/8w

Card edge connector (that plugs into the HP Power supply is a TE 1761469-1 https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/1761469-1/1761469-1-ND/2688514

Power screw terminals are 6.35mm 2-connector screw terminals - make sure they are 32a rated. I use Phoenix contact 1714955 https://www.digikey.com/product-detail/en/phoenix-contact/1714955/277-1269-ND/260637

All of the connectors mount on one side, as indicated from the PCB text. MAX power is 900w with 1oz copper. You can run it on a HP 1200w power supply fed by 120v. DO NOT go over this. at 900w, the PCB will run warm. You can run 2oz and have less heating.

HP breakout board for the Common Slot power supplies. Similar to Jboards design. R1 is a 21k or 22k 1/8w

Card edge connector (that plugs into the HP Power supply is a TE 1761469-1 https://www.digikey.com/product-detail/en/te-connectivity-amp-connectors/1761469-1/1761469-1-ND/2688514

Power screw terminals are 6.35mm 2-connector screw terminals - make sure they are 32a rated. I use Phoenix contact 1714955 https://www.digikey.com/product-detail/en/phoenix-contact/1714955/277-1269-ND/260637

All of the connectors mount on one side, as indicated from the PCB text. MAX power is 900w with 1oz copper. You can run it on a HP 1200w power supply fed by 120v. DO NOT go over this. at 900w, the PCB will run warm. You can run 2oz and have less heating.