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Using the Camera with BullseyeĮstablished Raspberry Pi camera users will be familiar with raspistill and raspivid, two terminal commands that take pictures and record video using any camera that’s connected to your Pi, including the Raspberry Pi HQ camera. After enabling the SPI interface via raspi-config we opened a Python REPL and connected to Analog Zero using a ready made. Analog Zero, from Raspio is a breakout board for an MCP3008 ADC which connects to the Pi using the SPI interface. We wanted to test an often unheard of board. Right now there is no definitive list of boards that are incompatible with Bullseye, and over the coming weeks the number of boards with problems will slowly dwindle.
THONNY STABLE RELEASE INSTALL
For example we tested Adafruit’s Braincraft HAT and it failed to install due to a dependency issue. However, there are still plenty of other HATs that need software which has not been patched yet. The new error had nothing to do with Bullseye, rather it was an issue with the ADC library and Python 3.9, both of which were eventually patched by their developers. We made it past that error and encountered a new error, relating to the Explorer HAT Pro’s onboard ADC (Analog to Digital) converter.
We used raspi-config to enable the I2C interface and then retried. After a little investigation, we traced the fault to I2C typically this is enabled during the install process, but not with Bullseye. With Bullseye, we used Pimoroni’s one line Bash install script and everything went well, until we tried out the included test script which failed.
THONNY STABLE RELEASE PRO
Explorer HAT Pro has been around since 2014 and it is a remarkable board for projects. Moving on, we tested two third-party boards: Pimoroni’s Explorer HAT Pro and the RasPiO Analog Zero. We tested a Sense HAT, a board made by Raspberry Pi and it worked out of the box with no issues. These range from simple robots to complex machine learning / computer vision applications, all using the Raspberry Pi and a plethora of boards. Connecting electronics and add-on boards (HATs), especially the best Raspberry Pi HATs, we can build many types of Raspberry Pi projects. What makes the Raspberry Pi special is the GPIO and the many opportunities it affords us. Without the GPIO (see Raspberry Pi GPIO pinout), the Raspberry Pi is just a small Linux computer. The automatic overclock built into Bullseye takes the Pi 4 to 1.8 GHz, the same speed as the Raspberry Pi 400 and the reason for that is that the newer Pi 4 shares the same SoC as the Pi 400. All of our Raspberry Pi 4 are from the early batches so we cannot comment on the automatic speed boost, but we have performed extensive overclocking experiments with the Pi 4 and found that with, adequate cooling, it’s easy to overclock the Raspberry Pi to 2.14 GHz. On the bright side, Bullseye comes with an added speed boost for newer Pi 4 models. The difference between the two is so small that’s probably within the margin of error and not noticeable. To find out how Bullseye runs applications, we opened a fresh Chromium browser to a blank tab, and Bullseye completed the task in 7.92 seconds while Buster handled it in 7.74 seconds. Bullseye drags behind at 28.48 seconds, a delay that we can really feel. has seen many updates and tweaks to the boot process. For now Buster is the clear winner, clocking in at 21.84 seconds, which makes sense since the older OS. On our test Raspberry Pi 4 with 4GB of RAM, we booted Bullseye and Buster and timed from the appearance of the rainbow image to a usable desktop. Performance of Raspberry Pi OS Bullseye vs Buster We ran Chromium via the terminal, as any errors would be output and saw reference to an “ service” which we assume is automatically part of Bullseye. General browsing on Chromium 92 in Buster worked well, as and bbc.co.uk both loaded and rendered flawlessly. However, in my testing, YouTube crashed every time we loaded a URL so that’s a bad sign. Theoretically, you could get the benefits of Chromium 92 on Buster as the new browser will install in the old OS. YouTube showed some frame drops in its “Stats for Nerds,” menu option but we didn’t notice any disruptions with our naked eyes.
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However, 1080p 30 playback was very good. It wasn’t a total slideshow, but was bordering on unwatchable. When we played the Big Buck Bunny test video, we saw that 1080p 60 playback was still poor.
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With Chromium 92, we find that 720p video, windowed and full screen, plays back exceptionally well, with just 1 percent of frames dropping. With older Raspberry Pi OS releases anything above 720p is a slideshow, and full-screen 720p is also not an enjoyable experience. Version 92 of Chromium takes advantage of the Raspberry Pi hardware acceleration to really speed up streaming video.
THONNY STABLE RELEASE UPDATE
Bullseye also brings an update to the Chromium browser.
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