The active cooling provided by the Fan Shim did drop our temperatures considerably. It covers the SoC but hangs over the footprint of the Raspberry Pi Zero 2 W. Pimoroni’s Fan Shim may fit comfortably on the GPIO, but the placement of the fan over the SoC is not optimal. To further lower the temperature, we would need a form of active cooling and Pimoroni’s Fan Shim sprang to mind, but there is a problem. The 6.5 Celsius temperature difference between the Raspberry Pi Zero 2 W without and with a heatsink is not earth shattering and the higher temperature in no way impacts performance. With a Raspberry Pi sized heatsink attached, in our Stressberry test, we reached a high of 56.9 Celsius, and the idle temperature remained at 36.5 Celsius. We rebooted and everything was ok but it is fair to say that taking your Pi to the extreme will require cooling.Ĭan adding a heatsink help the Raspberry Pi Zero 2 W reach a lower temperature? The short answer is yes. With the Raspberry Pi Zero 2 W overclocked to 1.4 GHz and inside the official Raspberry Pi Zero case we ran stressberry and saw the temperature rise to 75.2 Celsius and then the system locked up hard. That’s not a big difference in temperature, but when we used Stressberry, we saw the Pi Zero 2’s temperature rise to a high of 63.4 Celsius, much higher than the Pi Zero W’s 44.4 Celsius.įor reference we ran Stressberry on a Raspberry Pi 3B and saw an idle temperature of 40.8 Celsius, and Stressberry high of 80.1 Celsius! We took our test up a notch and ran a tortue test to see when the Raspberry Pi would thermally throttle. At idle, the Pi Zero 2 sits at 36.5 Celsius, compared to the Raspberry Pi Zero W which idles at 32.6 Celsius. The Raspberry Pi Zero 2 W comes with four cores running at a stock 1 GHz, and the increase in cores and speed translates to an increase in heat. Wi-Fi is competent but do consider that this is a PCB antenna so you will need to be near a strong access point. Performance improved once we connected a USB to Ethernet dongle, but we still saw frequent pauses and stutters. Streaming video on YouTube is not a good experience as in our tests it failed to play a clip at even 720p resolution. With half the RAM of a Pi 3B, 512MB, we can get the basics done such as coding via Thonny, basic web browsing and a few games of Minecraft Pi Edition. The Raspberry Pi Zero 2 W has the same BCM2710A1 die as the Raspberry Pi 3, but don’t expect Pi 3 performance. We also tested the official Raspberry Pi Camera with the Zero 2 W and are happy to report that it worked as expected. Suffice it to say that, if you have any Raspberry Pi HATs or add-ons, you can run them on the Pi Zero 2 W with the exception of the PoE HAT and PoE HAT+ which require the PoE header pins only present on the 3B+ and 4. We then tested Raspberry Pi’s own Sense HAT and it worked with no issues. Explorer HAT Pro installed and ran without a hitch and so did the pHAT version. First on the list is Pimoroni’s Explorer HAT Pro, a board we are extremely accustomed to after leading 25+ Picademy training sessions where we used it to teach students. We installed the current version of Raspberry Pi OS 32-bit, and proceeded to power on and test a series of HATs. The Raspberry Pi Zero 2 W comes with the standard 40 pin GPIO, of course you will need to get your soldering iron ready, or invest in some of Pimoroni’s Hammer Headers. The form factor is identical to the Zero’s that came before it, so you can drop this into an existing project with little or no config. What you can expect is for the Raspberry Pi Zero 2 W to replace the Pi Zero in your embedded projects. So don’t expect it to replace your beloved Raspberry Pi 2 / 3 or 4. Straight off the bat, the Raspberry Pi Zero 2 W is not a desktop replacement Pi. When integrating the Raspberry Pi Zero 2 W into your project, ensure that you have more than enough power for the Pi and any other devices. The same test on the Raspberry Pi Zero 2 W and we saw 280mA at idle and 580mA under stress. The Raspberry Pi Zero W draws around 260mA at idle and 370mA when stressed using Stressberry. The added performance of the Raspberry Pi Zero 2 W does see it draw a little more power, something to factor into your projects.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |