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To be clear i am a Beginner with the Raspberry PI, I found the Sense hat easy to set up with the Help of some Youtube Video's. And to have a little weather Station Broadcasting to the Internet was was a goal i set myself.
My issue was not with the Latter however but the Sensors, They are over the CPU on the Raspberry PI that even under a low load causes the Sense Hat to register the wrong readings.Having the Hat and PI in the same caseisi just not going to work. There are many people on the internet who offer software solutions but for a Beginner it's not really viable or accurate.
After Trying several different methods i ended up using a ribbon cable to move it away from the PI and will have to come up with a custom case but in the spirit of learning it was fun finding out if not a little time consuming.
Item works as described. Easy to set up. The only problem is that with a heat sink, the heat builds up so much that the temperatures are off by 10 degrees and rising. The simple fix is to install a ribbon cable and change the female headers on the sense-hat with male headers. While this is easily achieved, you have to by male headers and the ribbon extra. The process is explained here. http://www.data-analyst.org/wp/alternative-raspberry-pi-sense-hat-installation-with-ribbon-cable/
This is OK for learning how to program various sensors and outputs, but is no good if you want accuracy. The temperature sensor is affected by the heat from the Pi CPU and is approximately 10 degrees C too high unless you separate the HAT from the Pi which rather defeats the idea of a HAT. The humidity sensor disagreed with the other 2 sensors that I have in the same room which suggests that too is inaccurate. Returned as unsuitable for my purpose
The Sense Hat is a fantastic little add on for your Raspberry Pi (RPi). The freely downloadable Python libraries makes it easy to obtain data from the device's sensors and use the 8 * 8 LED matrix.
The Sense Hat came with a GPIO pin extender and some plastic stand off pillars and screws. You may find some issues if you plug the Sense Hat directly into the RPi as the GPIO pins are too short and dont always make contact - the pin extender and stand-offs solve this problem and creates a bit more of an air gap above the Raspberry Pi processor, to help keep it cool. The only downside is that it won't fit in the official Pi case.
A lot of other reviews comment on the accuracy of the temperature sensor, picking up heat from the processor and therefore reading high. While this is true, it's possible to correct for this by applying a correction factor. Using a laboratory grade liquid in glass thermometer, the Sense Hat Temperature measurement (From the Humidity Sensor) appears to be a constant 6 t o7 degrees high. This was measured over 20 different readings over a range of 8 - 21 degrees,( RPi idle)perature measurement). It is therefore possible to get a reading that is within a couple of degrees
As with the RPi itself the main point of the Sense Hat is to learn, Learn Programming, learn how multi coloured displays work, learn how sensors work and communicate with a processor over I2C. Endless fun.
Almost a 5 star product!! unfortunately temp sensor is affected by the Pi board so gives false readings which in turn affects the humidity readings (or more correctly should affect the humidity readings). I am avoiding the errors by using a gpio ribbon cable. I work in monitoring the environment (temp and rh in particular!) and really wanted something to play around with at home but this product has plenty of projects to keep me entertained! Very, very, very good product but not quite perfect.
Everything works as described. But the temperature sensor is poorly placed. The temperature sensor is affected by the heat from the raspberry pi and the board itself. The LED array is fantastic though.
Works well enough but the temp sensor is too close to the Pi so it picks up too much temperature. Tried using a ribbon to give it some distance but it lacked the power to drive the board then (?). Other than that. Fun and easy to use