CanaKit 5V 2.5A Raspberry Pi 3 B+ Power Supply/Adapter (UL Listed)

I used this power supply to provide separate power to a pro audio "hat" installed on top of a Raspberry Pi 5. The manufacturer recommended this dual power setup for best audio quality.Audio is crystal clear and operation of the physical player piano is spot-on.The photo shows the in-process installation with the power lead from this supply entering the Raspberry Pi enclosure from the front.

I recently purchased the Raspberry Pi 3 B+ Power Supply and I have to say that it has exceeded my expectations. While it was a bit more expensive than some other options on the market, the quality and reliability of this product make it well worth the investment.The power supply was easy to install and works flawlessly with my Raspberry Pi 3 B+. I haven't experienced any power issues or interruptions since I started using this product, which has given me peace of mind knowing that my Raspberry Pi is receiving the consistent power it needs to function properly.The build quality of the power supply is impressive, with sturdy construction and a sleek design that looks great alongside my other tech equipment. It's clear that a lot of care and attention to detail went into the manufacturing of this product.While it might be a bit more expensive than other options out there, the peace of mind and reliability it provides make it worth the extra cost. If you're looking for a high-quality power supply that you can rely on to keep your Raspberry Pi running smoothly, this is definitely a product worth considering.

This power supply is good for the Pi Zero through the Pi 3B computers. Be aware that it does not provide enough power to run the Pi 4 or 5 as it only puts out 2.5 amps. The bigger Pi models take 3 or more amps to run properly.

Note: if laying the board on a desk, the circuit board should be at the top (where you can see the LED flash from time to time). There's a brief manual at the manufacturers (Nova) site.The recent smoke events in the NE US got me researching air quality sensors. My research lead me to learning about sensor components and then on to researching if I could use a sensor with a Raspberry Pi. I own a Raspberry Pi 3 which has been "resting" in a drawer for a few years... More research and I learned how I could use the Pi with this sensor. So, I ordered the sensor.I followed the directions I found and was able to get the system to work. I wasn't sure it was accurate, so last evening, as the AQI was rising, I put it all on my front porch and the initial reading just so happened to match the EPA sensor a few miles away. Good sign. The readings bounced around a bit, as I would expect and I brought it back inside.My purpose is to measure my inside air especially during outside smoke "events" to know what is happening and to measure if countermeasures (air cleaners, their location, etc) are working.As a test, I did run my vacuum cleaner near the sensor and it detected an increase in PM10. The increase in PM2.5 could have been a "rounding error."Finally, a comment about accuracy in more humid environments. As humidity increases, the amount of dust that can be suspended in air increases. Turn on the A/C, the dust in the air decreases because there's less water molecules in the air to support that dust. That this device is detecting less dust in the air after the A/C is turned on is a sign that this device is working.

The attached image shows measured IV curves for this power supply compared to a 2.0A power supply (Kootek). I generated these with a RPi-based IV curve tracer that I built for solar panels (search for "IV Swinger" on YouTube and/or GitHub if you're interested in knowing more about it). It's not intended for such small voltages, but it worked pretty well.The IV curves show the current (I) and voltage (V) for different resistances (R). This tells the story about how the supply delivers power for different loads (power = I * V).You can see that both supplies have an open-circuit voltage of 5.3V. That is the lower rightmost point. R = ∞Ω, I = 0A, P = 0W.The upper left points of each curve are the closest to R = 0 (short circuit) that we can measure (R = 0.94Ω due to wiring resistance). You can see that the Kootek delivers just about 3A of current and the Canakit delivers about 3.8A. But at this point both are way below 5V (below 3V, in fact.).An interesting point is where the curves cross their rated current values. The Kootek 2.0A supply crosses 2.0A at about 4.6V (2.0*4.6 = 9.2W). The Canakit 2.5A supply crosses 2.5A at about 4.5V (2.5*4.5 = 11.25W). Both of these are well below 5V. Probably high enough that the RPi won't crash, but cutting it close.Another interesting point is where the curves cross 5.0V. The Kootek 2.0A supply crosses 5.0V at about 0.8A (0.8*5.0 = 4.0W). The Canakit 2.5A supply crosses 5.0V at about 1.0A (1.0*5.0 = 5.0W).People who are claiming that this supply doesn't deliver 2.5A are correct - if they are expecting it to deliver 2.5A at 5.0V. But what is important is whether the supply is sufficient for the RPi 3. All I can say for sure is that it does deliver proportionally more power than a 2.0A-rated power supply that has worked fine for me with the Gen 1 RPi B+. For that reason, I'm giving it four stars.For anyone with specific voltage requirements at the rated (or other) current, you can read the values off the IV curve in my attachment.

I use a lot of raspberry pi B for personal projects. this is the only power supply that doesn't under-deliver power. this one keeps up with whatever I do whether it is my radio hotspot or my streaming tv box. great little guys right here.

I had a Pi with a power supply that started to report under voltage so thought I would try this unit. Its an easy drop in replacement for the original and works perfectly. Now no more under voltage reports. Highly recommended.

Consistent power supply that works. Not expensive. Does the job well.