![]() As far as I'm aware this is not commonly used, and most products advertising Power Delivery support use the predefined power rules.įor most people with self-hosting tasks amd64 is back as the way to go.Īs you say, there are a ton of "minipcs" on the market that directly compete with the Raspberry Pi on cost and power usage. This was extended by rev 3.1 with voltages between 15V and 48V in steps of 100 mV, called the Adjustable Voltage Supply. Orthogonally to the fixed power rules, rev 3.0 introduced the Programmable Power Supply, which allows a configurable voltage between 3.3V and 21V in steps of 20 mV. So 5V/5A is a valid option, but only when used with a USB PD rev 3.1 compatible power supply and cable. EPR also added power rules at 28V, 36V and 48V, again requiring (differently) marked cables and up to 5A. That revision also added the Extended Power Range (EPR), which raised all the current limits up to 5A, but only when used with electronically marked cables. These power rules were retroactively named the Standard Power Range (SPR) in rev 3.1. The maximum supported currents by the specification were 5V/3A, 9V/3A, 15V/3A and 20V/5A. These were deprecated by rev 2.0, version 1.2, which instead introduced power rules at four fixed voltages, supporting power supplies with different output powers. I'm going to ignore the actual protocol used for negotiation here, but there have also been at least three different protocols. LAN Module: Dimensions: 70 × 80 × 16 mm 2.You're both correct, but USB Power Delivery, like so many things USB, is a total mess with different revisions, and versions of those revisions, that each extend and deprecate parts of the previous revision. LAN Module: Dimensions: 70 × 80 × 20 mm 4 × USB 1 × Ethernet USB/HDMI Module: Dimensions: 35 × 80 × 20 mm 2 × USB 1 × full-size HDMI 1 x micro-USB power SpecsĬase: Dimensions: 35 × 80 × 20 mm SD card access Removable cover VerdictĮasier GPIO and camera access would be nice, but the exquisite design, tough materials, and sensible pricing more than make up for that. It would also be interesting if documentation was provided on how you could make your own modules using the through-module header. One slight niggle was a lack of access to GPIO and camera connectors, although this can be overcome with USB devices. Argon has also teased future modules for further expansion. ![]() The modular nature means you can keep costs (and size) down. The screen is perfectly adequate, although you’ll need a stylus for meaningful use of the touch capabilities.Īll in all, this is a great collection of add-on gadgets for your Zero. Provided documentation explains how to take control of them yourself using GPIO. A simple configuration system allows the buttons to be preprogrammed with common functions such as power off or reboot. Drivers are required to get the screen running, which we found easy to install. Framed in an attractive black bezel, with four programmable buttons, it transforms Zero into a stand-alone unit opening up the potential for makes. ![]() The Display Module (£30/$30) is a 2.8-inch capacitive touchscreen that plugs into Zero’s GPIO. Again, a one-minute install and Raspberry Pi OS recognises all peripherals without any additional software. Easily snapping together, you now get an additional four USB connectors (two on the front, two on the back) and an Ethernet connector for hard-wired networking. A ‘full-size’ module, it sits below our current setup, connecting via an exposed header on the USB/HDMI module. Need some more USB ports? How about Ethernet? The USB/LAN module (£20/$20) does both. Underneath, a header and power connector are exposed that are used to connect other modules, so you may require this module for compatibility. Installation is as simple as lining up the connectors and pushing together, with no drivers required. The first add-on module, USB/HDMI (£12/$12), connects directly to mini-HDMI and micro-USB ports, breaking them out into full-sized equivalents and separating the power, freeing up another USB port.
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