how is the compass oriented, and how is direction transmitted?

referring to the description pictures you will see the heading symbol is opposite the connector. on the antenna side you will see a "tick" mark indicating heading. the connections depend on the application. in my case i am using it with an APM 2.8 flight control module that facilitates two connections. one for the gps input and the other for the compass input

can this hook to a raspberry pi zero 2 W? if so, how?

I have not purchased one but if it has the same GPIO as it's cohorts (Pi4, Pi3, 0), then yes. The GPS requires TX and RX. The compass needs SDA and SCL.

is the usb serial dongle included?

Not included. You can buy it here, https://www.amazon.com/dp/B07R3388DW

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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BN-880 GPS Receiver Compass Module Glonass Beidou NMEA0183 9600bps | BN-880 GPS Receiver Module with Flash Compass Support GPS Glonass Beidou NMEA-0183 9600bps 1Hz for Arduino

BN-880 GPS Receiver Compass Module Glonass Beidou NMEA0183 9600bps | BN-880 GPS Receiver Module with Flash Compass Support GPS Glonass Beidou NMEA-0183 9600bps 1Hz for Arduino

Product ID: 206742806

Details

Brand
DIYmalls
Connectivity Technology
6pin cable
Included Components
1x BN-880 GPS
Map Type
Worldwide
Model Name
BN-880
Mounting Type
Windshield in

⚡Fast hot start <1 sec

💾Flash memory saves config

🛰️GPS+GLONASS+BeiDou dual-mode

€ 72.71

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛰️ Navigate smarter, fly faster, and never lose your way again!

INSTANT HOT START - Locks satellites in under a second when warm, so you’re always mission-ready without the wait.
GLOBAL SATELLITE FUSION - Seamlessly switch between GPS+GLONASS or GPS+BeiDou for unparalleled location accuracy worldwide.
INTEGRATED DUAL COMPASS - HMC5883L electronic compass adds precise directional data, perfect for drones and navigation pros.
PERSISTENT CONFIGURATION - Built-in flash memory means your settings stick—no need to reset every time you power up.
PLUG PLAY COMPATIBILITY - Optimized for Arduino and Teensy boards with flexible baud rates up to 112,500bps for smooth integration.

The DIYmalls BN-880 GPS Receiver Module is a compact, high-performance navigation device supporting GPS, GLONASS, and BeiDou satellite systems. Featuring a blazing fast hot start under 1 second, flash memory to save your custom settings, and an integrated dual electronic compass (HMC5883L), it’s engineered for seamless Arduino and drone integration. With flexible baud rates and reliable 1Hz update frequency, it’s the essential upgrade for professionals demanding precision and speed in their navigation tech.

Specifications

ASIN	B086ZKFFY4
Additional Features	Dual Module Compass, Electronic Compass IC HMC5883L
Best Sellers Rank	#7,211 in GPS System Accessories
Brand	DIYmalls
Built-In Media	1x BN-880 GPS Module with Cable
Compatible with Vehicle Type	Drone
Connectivity Protocol	Cellular
Connectivity Technology	6pin cable
Control Method	App
Customer Reviews	4.3 4.3 out of 5 stars (156)
Human-Interface Input	Buttons
Item Dimensions L x W x H	1.1"L x 1.1"W x 0.39"H
Item Weight	15.88 g
Manufacturer	DIYmalls
Map Types	Worldwide
Model Name	BN-880
Mounting Type	Windshield Mount, found in image
Resolution	9600
Screen Size	2 inches
Supported Satellite Navigation System	GPS
UPC	747356637572

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