About

Redphone - simple handmade open source mobile phone

PCB

Hardware

• Cortex M4 STM32F429NI
• FPGA EP4CE22U14I7N
• 800x480 LCD on RM68120 controller
• Capasitive LG P715 touch screen
• Memory (two SDRAM MT48LC16M16A2B4, MicroSD)
• Audio system based on (WM8903, MP34DT01 dmic, headphone, ring, minijack)
• Wi-Fi on ESP8266
• GSM & Bluetooth in SIM800H, nanosim (galaxy s8 sim-sd slot)
• Sensors (MPU9250, APDS-9960, BME280)
• GPS MC-1010-G
• OV5647 camera (Raspberry Pi compatible) & led
• Power domain (galaxy s4 battery, TPS65217)
• USB type-C for custom connections

Software

• Latest linux kernel
• Firmware based on FreeRTOS, lwIP and Graphix (GUI C++ library)