ARC Hardware Overview

• Processor: Raspberry Pi Zero 2 W (quad-core ARM Cortex-A53 @ 1 GHz)
• RAM: 512 MB LPDDR2 SDRAM
• Storage: microSD (up to 512GB)
• Co-Processor: RP2040 Pico (keyboard controller, QMK firmware)
• Display: 3.5" Waveshare TFT LCD, 480×320, resistive touch
• Keyboard: 40% custom QWERTY, RGB notification, tactile switches
• Connectivity: WiFi 802.11 b/g/n, Bluetooth 4.2 BLE, GSM (SIM800L), NFC (PN532), RF (CC1101, NRF24)
• Audio: I2S DAC, onboard speaker, 3.5mm headphone jack
• Battery: 3.7V Li-ion/LiPo, USB-C charging, MAX17048 fuel gauge
• Power: Soft-latching circuit, 5–8h runtime typical
• Enclosure: Custom PCB, 3D-printed case, ~140×75×28 mm

Modular, portable, open source!