Pi Power Relay Board Expansion Board Module, Mode Digital Voice Modem Relay Board for .

• 【Relay Board for 】The MMDVM is intended to be an open-source Multi-Mode Digital Voice Modem, which utilities the power of an ARM processor and a simple analogue interface board.
• 【Work with】This board has been applied in the GM300 GM3188 3688 950I 338 Vitex DR-1X, other types of repeaters and car stations need to be studied yourself. This board needs to cooperate PI3, orange pie, a variety of school development board to use.
• 【Digital Voice Modem】The Multi-Mode Digital Voice Modem is a combined hardware and software development of a modem to handle all amateur digital voice modes. Initially it will support D-Star and DMR, with System Fusion and P.25 coming later, as well as a built-in FM repeater controller. For all modes other than DMR and FM, the modem can be used in simplex or duplex mode, while for DMR and FM full duplex must be used.
• 【Hardware Requirement】The MMDVM is aimed at the Due, Teensy 3.1/3.2 and mbed platforms, the only requirement for the hardware is to be ARM Cortex-M3, M4, or M7 based, and access to raw interrupts and ADC and ADC ports as well as digital signalling ports.
• 【Note】It can't work for 3B+, can't use the LCD display. If you have any questions about our products, please do not hesitate to contact us. We will do our best to get satisfaction from you:)

Specification: Size: about 6.6*5.7*2cm/2.6*2.24*0.79in Color: Green Material: PCB Package List: 1 * Relay Board for Raspberry Pi 1 * Moto Cable 2 * Adapter 1 * Instruction Manual Note: It can't work for 3B+, can't use the nextion LCD display.