Raspberry Pi Zero W

1. Pi Zero Status LED
2. References

• 1GHz, single-core CPU
• 512MB RAM
• Mini-HDMI port
• Micro-USB On-The-Go port
• Micro-USB power
• HAT-compatible 40-pin header
• Composite video and reset headers
• CSI camera connector
• 802.11n wireless LAN
• Bluetooth 4.0

Pi Zero Status LED

The Pi Zero only has a single activity status LED. There is no power LED. On both the Zero and Zero W the Activity LED is on GPIO Pin 47, the same as the A+/B+/2B but different to the original A and B models (which are on GPIO pin 16). The only other difference for the Zero/ZeroW is that you clear the pin to turn the LED on (and set the pin to turn the LED off) which is opposite to the A+/B+/2B.

dtparam=act_led_activelow=on in /boot/config.txt that makes it work like the normal activity light on my other Raspberries.

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References