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Green rectangular circuit board with 40-pin GPIO header and SODIMM edge connector

WaveShare

WaveShare Raspberry Pi Zero 2W to CM3 Modular Adapter

SKU CH-RCJR-29BJV

Adapts a Raspberry Pi Zero 2 W to the CM3 SODIMM form factor for use with CM3-series HATs

  • CPU TypeOther
  • Replaces scarce CM3 modules using a Zero 2W
  • 40-pin GPIO and pogo pins attach the Zero 2W securely
  • Onboard SODIMM connector fits existing CM3 HATs directly
  • Adapts USB, microSD, OTG, CSI and HDMI through the adapter
  • Incompatible with first-generation Zero or Zero W boards

Adapter purpose and audience

This modular adapter lets a Raspberry Pi Zero 2 W function as a drop-in replacement for a Compute Module 3 or 3+. It targets developers and integrators who need CM3 form-factor compatibility but face supply shortages of the original module. The Zero 2 W itself is not included and must be sourced separately. The board is not compatible with first-generation Zero or Zero W boards.

Thermals noise and power

The adapter is a passive PCB with pogo-pin and 40-pin GPIO interconnects, so it adds no active cooling, fan noise or measurable power draw of its own. Thermal behaviour and power consumption are determined entirely by the attached Zero 2 W module and the host carrier board. No additional thermal management is introduced by the adapter.

Upgrade path and value

This board upgrades an existing CM3 or CM3+ carrier or HAT ecosystem to accept the more readily available Zero 2 W, preserving the SODIMM footprint and peripheral routing for USB, microSD, OTG, CSI, HDMI and GPIO. The jump is worthwhile when CM3 stock is unavailable and the project can tolerate the Zero 2 W's different CPU architecture without software changes.

Highlights

  • Replaces scarce CM3 modules using a Zero 2W
  • 40-pin GPIO and pogo pins attach the Zero 2W securely
  • Onboard SODIMM connector fits existing CM3 HATs directly
  • Adapts USB, microSD, OTG, CSI and HDMI through the adapter
  • Incompatible with first-generation Zero or Zero W boards

Specifications

CPU TypeOther

Questions about this item

How do I install the Raspberry Pi Zero 2W onto this adapter board?

Align the Zero 2W's 40pin GPIO header with the onboard pogo pins and press firmly until seated; the SODIMM edge connector then plugs into your CM3 carrier board.

What part of this adapter might need replacement after repeated module swaps?

The pogo pin array that contacts the Zero 2W GPIO can wear or lose spring tension after many insertions, requiring board replacement.

What thermal limit appears first when the Compute Module 3 carrier board runs sustained loads?

The Zero 2W's own CPU throttling point is reached before the adapter's passive connections become a bottleneck.

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