🛠 Premier démarrage de la Zero avec écran (mini-HDMI)

Goal

Make the bare Zero interactive for the first time: write Raspberry Pi OS to a microSD card, wire the only video and USB ports the board has, and run the first configuration commands.

Wiring & parts

• microSD card (8 GB+) in the slot on the underside of the board
• Display: the Zero has a mini-HDMI socket (not micro-HDMI!) — you need a mini-HDMI cable or adapter ; output goes up to 1080p60
• Keyboard: there is only ONE micro-USB data port — use a micro-USB (OTG) adapter for the keyboard, and plug the 5 V / 1.2 A power supply into the other micro-USB socket (the power one)
• The 40-pin GPIO header ships unsoldered ; you do not need it for this tutorial

Steps

1. In Raspberry Pi Imager, pick Raspberry Pi OS Lite (32-bit, armhf) and write it to the card.
2. Insert the card, plug the power supply last. First boot takes ~30 s.
3. Log in, then:

sudo raspi-config      # hostname, locale, SSH, boot options
vcgencmd measure_temp  # SoC temperature; hard throttle limit is 85 C
lsb_release -a
df -h /

Check

You get a login prompt (or desktop) over mini-HDMI, and vcgencmd measure_temp answers temp=xx.x'C.

Pitfalls

• Plugging a micro-HDMI adapter into the mini-HDMI socket: no signal — the connector sizes differ.
• Powering from a PC USB port: voltage often sags and can corrupt the SD card ; use a proper 5 V / 1.2 A supply.
• Plugging power into the data port: the board does not boot normally (it may enumerate as a USB gadget instead).
• Keyboard and USB stick both on the single data port: impossible without a bus-powered hub.