where do I go to find example code to use this shield? Not finding much support

Regular Aurino programming as in an UNO

Could someone tell me what size and type of dupont connector i should order to plug into this shield?

most all of them are cheap from china. there not pure copper. for starting out there ok. get amazons choice under serach for arduino both femal and male end.

Can you use the blue terminal for adding 8 volts for stronger servo's?

I don't think seller is correct. It is clear in the description text and pinout photo that the jumper in the corner selects for routing 5V or terminal block to VCC pins. I see no voltage regulator chip on this board.

Can you use this with a 3v board like the due?

Yes, but remove the PWR_SEL jumper, and jumper the 3.3v into the VCC terminal block.

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Keyestudio MEGA Sensor Shield Expansion Board for Arduino

Keyestudio MEGA Sensor Shield Expansion Board for Arduino

Product ID: 736191803

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Details

Brand
KEYESTUDIO
Connectivity technology
Bluetooth
Wireless communication standard
Bluetooth
Total USB ports
4
UPC
600346569348

📡Bluetooth & RF module interfaces

🔌Multiple 3PIN (G V S) ports

🛠️Digital & analog sensor compatibility

Description

🚀 Elevate your Arduino game with seamless sensor synergy!

PLUG PLAY PROTOTYPING - 100% Arduino MEGA Rev3 compatible for instant software integration and rapid development cycles.
COMPACT YET ROBUST DESIGN - Lightweight 100g shield packaged neatly, perfect for both experimental and permanent setups.
ENGINEERED FOR INNOVATION - Ideal for scientific research and advanced DIY projects, empowering your creative edge.
VERSATILE COMMUNICATION READY - Built-in interfaces for Bluetooth, SD Card, and APC 220 RF modules keep your projects connected and future-proof.
EFFORTLESS MULTI SENSOR INTEGRATION - Simplify complex circuits with abundant ground and VCC headers for seamless 3PIN connections.

The Keyestudio MEGA Sensor Shield Expansion Board is a high-quality, Arduino MEGA Rev3 compatible prototyping board featuring extensive 3PIN sensor ports, digital and analog interfaces, and dedicated communication slots for Bluetooth, SD Card, and RF modules. Designed for easy, efficient sensor integration, it accelerates development for both experimental and permanent applications.

Specifications

Brand	KEYESTUDIO
Package Dimensions	13.69 x 8.41 x 3.2 cm; 100 g
Item model number	8541582658
Manufacturer	keyes
Standing screen display size	1 Centimetres
Connectivity Type	Bluetooth
Wireless Type	Bluetooth
Are Batteries Included	No
Item Weight	100 g
Guaranteed software updates until	unknown

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560 kr

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TrustScore 4.5 | 7,300+ reviews