AURSINC MMDVM Duplex Hotspot Module Dual Hat V152 Support P25 DMR YSF NXDN DMR Slot 1 Slot 2 for Raspberry Pi Pi Zero Without OLED and USB Port

Extensive Compatibility Supports DMR P25 DStar and System Fusion HIGH PERFORMACE 32bit ARM processor up to 10mW RF power fully tested every piece Compatible with the Raspberry Pi including the Pi 1 22b 33b3b 44b Pi Zero Pi Zero 2W EASY OPERATION The firmware is preloaded and is easily upgraded via software Onboard LEDs showing status Tx Rx PTT Mode Pistar control Mode selection DUPLEX ModeSIMPLE Mode FREQUENCY UHF 433900 MHz VHF 144220 MHz NOTE TX0 RX0 Modem select STM32HSGPIO To leave the screen on all the time In PiStar configuration ensure you have OLED Type 3 in the display type field at the top of the page set Port to modem SETTING Modify the modem type any model ending in GPIO can be supported RadioModem Type STM32DVMMMDVMHSRaspberry pi HatGPIO In the Expert section go to MMDVM host and scroll down to the OLED section Make sure LogoScreensaver is set to 1 this leaves the screen on all the time Otherwise it goes blank when idle FIRMWARE UPGRADE pistar expert ssh access user pistar pass raspberry You can directly run upgrade commands without the need to set jumpers run in the Pi star terminal sudo pistarmmdvmhshatflash hsdualhat if this command doesnt work please try this command mmdvmclubindexphpwpsd html.