The Waveshare 19887 Mini Base Board (A) is suitable for evaluating the Raspberry Pi CM4 or being integrated into end products and has powerful functions in a credit card sized body.
What's The Differences
Other than the version B, there're NO RTC, Fan controller, and battery holder on version A, which is more cost effective.
Connecting With Compute Module 4
Standard CM4 Socket And Color-Coded Raspberry Pi 40PIN GPIO Header
Suitable For Compute Module 4 Lite/EMMC Series Module
Compact, Yet Complete
Onboard Multiple Connectors Including:
CSI/DSI/FAN/HDMI/USB/RJ45 Gigabit Ethernet/Micro SD Card Slot/M.2 Slot
What's On Board
- CM4 socket
suitable for all variants of Compute Module 4 - Power input/Programming
5V/2.5A power supply, or used for eMMC burning - DISP
MIPI DSI display port - FAN
for connecting cooling fan, allows speed adjustment and measurement - CAM
2x MIPI CSI camera ports - HDMI0 connector
HDMI0 port, supports 4K 30fps output - USB 2.0 ports
2x USB 2.0 ports, for connecting sorts of USB devices - Gigabit Ethernet connector
Gigabit Ethernet RJ45 connector, with 10 / 100 / 1000M network support - M.2 indicator
indicating the operating status of M.2 interface - ACT indicator
indicating the operating status of Raspberry Pi - PWR indicator
indicating the status of Raspberry Pi power supply - BOOT selection
ON: CM4 would be booted from USB-C interface
OFF: CM4 would be booted from eMMC or Micro SD card
- 40PIN GPIO header
- Micro SD card slot
for connecting a Micro SD card with pre-burnt image (Lite variant ONLY) - HDMI1 FFC connector
HDMI1 port, supports 4K 30fps output - USB 2.0 FFC connector
can be connected through an adapter - FE1.1S
USB HUB chip, expanding one USB port to 4x ports - M.2 slot
supports sorts of NVME SSD, or communication modules with PCIE M.2 KEY-M interface
Outline Dimensions
Application Example
for reference only, CM4, display, and cameras are NOT included.
WARNING
