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Btw, I found out that if I go through a basic PWM setup it is the middle pin of the 3 pin header beside the main 26 pin header that outputs the PWM signal, eg make an LED blink every 0.5s: su -c "echo 0 > /sys/class/pwm/pwmchip0/export" su -c "echo 1000000000 > /sys/class/pwm/pwmchip0/pwm0/period" su -c "echo 500000000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle" su -c "echo normal > /sys/class/pwm/pwmchip0/pwm0/polarity" su -c "echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable" Also interesting: the LED keeps blinking after the OPi is powered down. Can anyone suggest the procedure to use the PWM pin on pin 7 aka PA06, preferably with shell/bash? Thanks Edit: the pwm doesn't seem to handle a frequency of 10kHz, but seems to work at 1kHz, which is ok for the fan I'm controlling as the speed is controlled by a voltage between 2.5V and 12V, which my circuit generates out of the PWM signal. Does anyone know the exact frequency at which the PWM on the 3 pin header bugs out? Also, any idea why my DS80B20 works on PA11 but not PA12? Thanks.

Thought this might be useful: FROM: http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=2236 01 3.3V 02 5V 03 TWI0-SDA PA12 04 5V 05 TWI0-SCK PA11 06 GND 07 PWM1 PA06 08 UART1_TX PG06 09 GND 10 UART1_RX PG07 11 UART2_RX PA01 12 SIM_CLK/PA_EINT7 PA07 13 UART2_TX PA00 14 GND 15 UART2_CTS PA03 16 TWI1-SDA PA19 17 3.3V 18 TWI1-SCK PA18 19 SPI1_MOSI PA15 20 GND 21 SPI1_MISO PA16 22 UART2_RTS PA02 23 SPI1_CLK PA14 24 SPI1_CS PA13 25 GND 26 SIM_DET/PA_EINT10 PA10 FROM OFFICIAL USER MANUAL: https://drive.google.com/drive/folders/1lrtE6lbpXqxXTMmq7IxROOaZbOQ0U8uP P01 VCC-3V3 P02 VCC-5V P03 TWI0-SDA PA12 P04 VCC-5V P05 TWI0-SCK PA11 P06 GND P07 PWM1 PA6 P08 UART2_TX PA0 P09 GND P10 UART2_RX PA1 P11 S-TWI-SCK PL0 P12 PD11 P13 S-TWI-SDA PL1 P14 GND P15 UART2_CTS PA3 P16 TWI1-SDA PA19 P17 VCC3V3-EXT P18 TWI1-SCK PA18 P19 SPI1_MOSI PA15 P20 GND P21 SPI1_MISO PA16 P22 UART2_RTS PA2 P23 SPI1_CLK PA14 P24 SPI1_CS PA13 P25 GND P26 PD14 So you can make ~/bin/pinout-orange-pi-zero, and ~/bin/pinout containing: #!/bin/bash cat ~/bin/pinout-orange-pi-zero ... or just "~/bin/pinout": #!/bin/bash echo "text text text" ...so you'll have a pinout command like a Raspberry Pi. I have confirmed that pin 10 should be PG07, pin 12 should be PA07 and pin 26 should be PA10 for a DS18B20 temperature sensor with armbianEnv.txt like: $ cat /boot/armbianEnv.txt --- param_w1_pin=PA07 So it looks like the picture from Orange Pi forums is more accurate. Can anyone comment on the differences between the two pinouts eg pin 10, 12, 26, and others? Thanks, and thanks for making Armbian, and firstpost. Also warning, for other noobs (could have saved me several hours): "Armbian 23.5 Jammy" is broken! Click "Archived versions for reference and troubleshooting" on the download page and download "Armbian_23.02.2_Orangepizero_jammy_current_5.15.93.img.xz" instead