“Initially I used it with a Dietpi load and had difficulty getting the control software to work. The fan was on constantly. Then loaded Raspios-Lite 64-bit and had the same problem. However, tracked down advice on the internet that suggested screwing down the fanshim to make sure there was proper contact with the GPIO pins was the answer. Control software now works faultlessly.”
“It does do well in stress tests and can allow overclocking, but the build is flimsy and I broke a standoff on the fan itself by putting a slight amount of pressure on it.”
“The Pi4 is great, but does tend to run a bit hot!
This fan shim provides an ideal way to deal with this excess heat generation by providing temperature controlled airflow over the CPU, whilst not blocking the I/O connector. I have mine installed on an extra-high header, pinned down between the spacers on the pins, and then I can still add further HATs, with the CPU running at around 50C, rather than 79C”
