Raspberry Pi HAT regulates and measures power
Designed by John Hoeppner the Raspberry Pi HAT is capable of generating a stable and accurate power supply from low-cost poorly regulated supplies such as AC adapters, phone charges and others.
There are two models of the V series that address different needs. Both modules stack directly on top of a Raspberry Pi (any model with the 40 pin GPIO header) and conform to the Raspberry Pi HAT (Hardware Attached on Top) specifications.”
– V8 Power generates high quality and stable power for the Raspberry Pi. The high current / high efficiency (low heat generation) switching regulator provides clean and accurate 5V power for the Pi and peripheral devices. Standard features include over-current and short circuit protection, high temperature current limiting, reverse polarity protection, and a reset-able PTC type fuse. Two high current switched 5V outputs are included to control external devices (LCD or ?). The V8 also features safe power ON/OFF to prevent data corruption. Additionally a brushless ball bearing DC fan mounts directly above the Raspberry Pi CPU providing excellent cooling under high stress conditions.
– V12 Power inherits all the features of the V8 plus the following: 1) Precision measurements of voltage, current, and temperature. 2) Active cooling with variable speed fan control. 3) Supports battery operation – displays the charge state and voltage of the battery source, and enables safe low battery shutdown. 4) Raspberry Pi CPU statistics are monitored and displayed. 5) One-button safe power ON/OFF. OLED display for parametric info. 6) Built-in ‘Arduino’ compatible micro-controller. 7) A class D stereo audio amplifier drives two speakers. 8) Open source code for easy user reconfiguration or customisation.
Features:
– On-board regulator supplies 5V @ 5A to the RPi and attached peripherals.
– Short circuit, over & under voltage, and thermal protection.
– Two high current switched 5V outputs for external LCD and back-light (or ?).
– Reverse polarity protection and reset-able PTC fuse.
– Safe off to prevent data corruption.