piframe/docs/pimoroni_fan_shim.md

# Pimoroni Fan Shim

The below commands will setup the Pimoroni Fan Shim. The commands will turn the fan on at 45C and off again at 50C. Adjust if you need different values.

``` sh

sudo -sHu root

# Move boot serial -> UART5 to avoid colission between UART1 and fanshim
nano -w /boot/firmware/usercfg.txt
# Add following to top of file

# Enable uart5 on pins for ttyAMA1
# Pin 32 : TX (connect to RX on adapter)
# Pin 33 : RX (connect to TX on adapter)
dtoverlay=uart5
# Turn off uart ; fanshim will break boot if this is enabled
#     Further reading: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/1873520
enable_uart=0

nano -w /boot/firmware/cmdline.txt
# switch console=serial0,115200 to console=ttyAMA1,115200

systemctl reboot

# New pins
# Pin 32 : TX (connect to RX on adapter)
# Pin 33 : RX (connect to TX on adapter)

# Setup fanshim
sudo -sHu root
git clone https://github.com/pimoroni/fanshim-python.git /opt/fanshim-python
cd /opt/fanshim-python
./install.sh
cd examples
sudo ./install-service.sh --on-threshold 55 --off-threshold 45 --delay 5 --brightness 127
systemctl enable --now pimoroni-fanshim.service

```
Add pimoroni fan shim docs 2020-08-11 00:28:11 +00:00			`# Pimoroni Fan Shim`

			`The below commands will setup the Pimoroni Fan Shim. The commands will turn the fan on at 45C and off again at 50C. Adjust if you need different values.`

			``` sh

Fixup fanshim/uart pin colission 2020-08-11 01:33:24 +00:00			`sudo -sHu root`

			`# Move boot serial -> UART5 to avoid colission between UART1 and fanshim`
			`nano -w /boot/firmware/usercfg.txt`
			`# Add following to top of file`
Add note about fanshim causing problems with uart during early boot that can prevent the system from starting ; tweak docs WRT armor case and fan shim, recommend fan shim over armor case as it's a more flexible solution 2020-08-11 20:22:54 +00:00
			`# Enable uart5 on pins for ttyAMA1`
			`# Pin 32 : TX (connect to RX on adapter)`
			`# Pin 33 : RX (connect to TX on adapter)`
Fixup fanshim/uart pin colission 2020-08-11 01:33:24 +00:00			`dtoverlay=uart5`
Add note about fanshim causing problems with uart during early boot that can prevent the system from starting ; tweak docs WRT armor case and fan shim, recommend fan shim over armor case as it's a more flexible solution 2020-08-11 20:22:54 +00:00			`# Turn off uart ; fanshim will break boot if this is enabled`
			`# Further reading: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/1873520`
			`enable_uart=0`

Fixup fanshim/uart pin colission 2020-08-11 01:33:24 +00:00			`nano -w /boot/firmware/cmdline.txt`
			`# switch console=serial0,115200 to console=ttyAMA1,115200`

			`systemctl reboot`

			`# New pins`
			`# Pin 32 : TX (connect to RX on adapter)`
			`# Pin 33 : RX (connect to TX on adapter)`

			`# Setup fanshim`
Add pimoroni fan shim docs 2020-08-11 00:28:11 +00:00			`sudo -sHu root`
			`git clone https://github.com/pimoroni/fanshim-python.git /opt/fanshim-python`
			`cd /opt/fanshim-python`
			`./install.sh`
			`cd examples`
Fixup fanshim/uart pin colission 2020-08-11 01:33:24 +00:00			`sudo ./install-service.sh --on-threshold 55 --off-threshold 45 --delay 5 --brightness 127`
Add pimoroni fan shim docs 2020-08-11 00:28:11 +00:00			`systemctl enable --now pimoroni-fanshim.service`

			```