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Armfly ax pro.png
Status supported
Source code fx2lafw
Channels 8
Samplerate 24MHz
Samplerate (state)
Triggers none (SW-only)
Min/max voltage max. 5.0V
Threshold voltage Fixed: VIH=1.4V, VIL=0.8V
Memory none
Compression none

The ARMFLY AX-Pro is a USB-based, 8-channel logic analyzer with up to 24MHz sampling rate, and with 2 additional analog channels.

It is a clone of the CWAV USBee AX-Pro. There is an "RS232 RS485 RS422 CAN converter" add-on board which also has a BNC connector for analog support.

In sigrok, we use the open-source fx2lafw firmware for this logic analyzer.

Note: Only the logic analyzer functionality is supported so far, analog support is work in progress.

See ARMFLY AX-Pro/Info for some more details (such as lsusb -vvv output) on the device.


  • Main chip: Cypress CY7C68013A-56LTXC (FX2LP)
  • I2C EEPROM: Atmel ATML920 24C02N SU27 D
  • Low-dropout voltage regulator: Advanced Monolithic Systems AMS1117-3.3
  • Crystal: 24MHz
  • ADC: Texas Instrument TLC5510IPW, 8-Bit, 20 MS/s ADC Single Channel
  • OpAmp: Texas Instrument LMV358 Dual Low-Voltage Rail-to-Rail Output Operational Amplifier
  • OpAmp: Analog Devices AD8065 (SMD marking "HRA")
  • Multiplexor: (I do not see it. Is it U5?)
  • ...



Since we use the open-source fx2lafw firmware for this device, we don't need to know the protocol.