What is it? The Omzlo PiJack HAT lets you power your Raspberry Pi with any DC voltage source ranging from 6V to 28V, such as a car battery or a wall wart AC/DC adapter. It features a DC/DC buck swi...Read More…
The Omzlo PiJack HAT lets you power your Raspberry Pi with any DC voltage source ranging from 6V to 28V, such as a car battery or a wall wart AC/DC adapter. It features a DC/DC buck switching regulator that is designed to provide up to 1.7A to your board.
The Omzlo PiJack HAT features a barrel-type power jack for DC wall supplies, with a 5.5mm jack and a 2.1mm center pole diameter. You can also optionally solder:
The board also features an "ideal diode" that protects the Raspberry Pi USB net in case the Raspberry Pi is accidentally connected both to the PiJack HAT and USB power.
By default, the board is provided without a 2X20 pin GPIO header, but you can add to your order as an option:
The board layout is described in the picture below:
A Raspberry Pi board is not included with the PiJack HAT: you can connect it to any Pi Zero, Pi 2 model B or Pi 3 model B.
Free yourself from USB and power your next Raspberry Pi with the PiJack HAT!
This is an "accidental" byproduct of another bigger project: the Omzlo IoT platform, which offers a network of Arduino-compatible nodes managed by a Raspberry Pi, using CANbus and a common 12V (or 24V) power rail. Since we wanted to power everything with 12V (or 24V), we needed to design a solution to power the Raspberry Pi as well.
We found out that adding a DC power jack to a Raspberry Pi can be quite useful for many projects, allowing you to accept a much wider range of voltage inputs than the typical 5V provided through USB. So we decided to create this HAT and share it with the community, as described in our blog:
As far as we know, this is the only Raspberry Pi power supply HAT that accepts such as wide range of voltages, providing up to 1,7A, while being fully open-source/open-hardware.
In the end, it's a very simple and unpretentious project, but we believe others might find it useful.
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I'm the main designer and founder of Omzlo.Com (http://omlzo.com), where we like to play with Arduino, Raspberry Pi, Atmega328, STM32F0 and SAMD21.
We are building an Arduino-compatible IoT networks based on CAN bus.
We love open-hardware, sharing and hacking.
I'm French but live in Greece. In my past life I have been a cryptographer, a consultant in smart-card payment security and a privacy expert. Today I share my life between cloud security and electronics. I'm the main author of Cardpeek: an open source tool to explore the content of smart cards.