The ArduinoBugHopper is a compact USB-to-UART bridge board designed to bring straightforward remote debugging to Arduino UNO Q and Ventuno Q via its JCTL 2.54 mm connector.
Built around the FT230XQ, the BugHopper provides a reliable, high-speed serial link between your development machine and the target board, enabling advanced debugging and logging without occupying the board's main I/O pins. Its compact 38.5 × 11 mm footprint, USB-C connectivity, and multiple header options make it easy to integrate into any workspace, enclosure, or automated test setup.
In addition, onboard LEDs clearly indicate the status of 5V, 3.3V, and VTARGET power rails at a glance.
BugHopper simplifies debug and Linux console access and helps you keep your UNO Q projects running smoothly.
Dedicated debugging without sacrificing I/Os: The USB-to-UART connection preserves your UNO Q main I/Os for sensors, actuators, and other peripherals
Plug-and-play connectivity: Works seamlessly with standard FTDI drivers and terminal software for immediate debugging, logging, and firmware flashing
Compact and integration-friendly: Small footprint fits benchtop setups, tight enclosures, or permanent installations without adding bulk
USB-C connection: Standard connector ensures compatibility with multiple development machines
Visual status at a glance: Onboard LEDs indicate power rail status for instant troubleshooting
Features
USB-to-UART bridge: FTDI FT230XQ-R, USB 2.0 Full Speed, 300 baud to 3 Mbaud
USB-C connector
Bidirectional voltage-level translator: SN74AVC2T245RSWR, +3.3 VDC and V_TARGET domains
ESD protection: ESD321DYAR on USB lines and STN1010SB301 on signal lines
Header connectors
Female 2.54 mm 2x5 header for UNO Q JCTL
Male 1.27 mm 2x5 header: FTSH-105-01-L-DH-C-TR
4x configurable CBUS outputs via 2N7002PS MOSFETs
Onboard LEDs
Green: +3.3 VDC power
Red: V_TARGET status
2x yellow: TXD and RXD activity
Power: +5 VDC via USB-C, +3.3 VDC via FT230XQ internal voltage regulator
UNO Q compatibility via JCTL 2.54 mm connector
Dimensions: 38.5 mm × 11 mm
Specifications
Symbol
Min
Typ
Max
Unit
USB Supply Voltage
VUSB
4.75
5.0
5.25
V
FT230XQ Supply Voltage
VCC
2.97
5.0
5.5
V
Internal LDO Output Voltage
V3V3OUT
2.97
3.3
3.63
V
Target Voltage1
VTARGET
1.2
-
3.6
V
Operating Temperature
TOP
-40
-
85
°C
Operating Current (Active)
IOP
-
8
-
mA
USB Suspend Current
ISUSP
-
125
-
µA
¹ V_TARGET is a voltage input to the BugHopper supplied by the connected target board through the JCTL 2.54 mm connector. The BugHopper uses this voltage as the reference for the level translator (target side) and the V_TARGET status LED. The actual V_TARGET value depends on the connected board.
