HackerGadgets RTL-SDR extension board (v1)
The 2024 original: an RTL-SDR (R820T2), USB hub and real-time clock on one expansion card — the board that started the AIO line.
What it takes
- Plug & play
- Purchase required
Difficulty 1 of 3 — easy.
Details
vileer reverse-engineered an RTL-SDR dongle onto an expansion card after a first attempt failed, added an RTC because the CM4 had none, and shipped a batch under the HackerGadgets name; LoRa and GPS followed on later revisions. It is superseded by the AIO v2 and no longer sold, but many consoles still carry one and its setup guide is still online.
Links
Open at Forum threadRelated mods
The all-in-one expansion card: RTL-SDR, SX1262 LoRa, GNSS, RTC and a USB hub with internal USB-C; the adapter board adds USB 3.0 and Gigabit Ethernet.
mwaldron's CM4 build: better Wi-Fi antenna, an I²C RTC on the expansion-port pads, GPS and an RTL-SDR on a modified uHub, LoRa and CC1101 in progress.
Three boards that replace the stock adapter and battery board: PCIe NVMe storage, RJ45 Gigabit Ethernet and USB 3.0 (CM5), plus a PWM fan header.
Open-source card with three USB-C ports, an internal FFC USB header and speaker pads, from the maker of uPico.
10/100 Ethernet from a Microchip LAN9500A USB bridge, plus a USB-C port, on an expansion card.
A community PCB that replaces the 4G modem with four extra USB ports — schematic and layout on Codeberg.