Because the pull-up can result in voltages near 5V you should never directly connect EN to a 3.3V GPIO pin. The EN pin is pulled high by a 100K resistor to the higher of VUSB, the micro USB connector, or Li+. The EN pin is not a power pin, per se, but it controls the 3V3 power. Unlike the Photon, this pin CANNOT be used to power the Argon. When using this pin to power other devices or peripherals remember to budget in the current requirement of the Argon first. This pin is the output of the on board 3.3V step-down switching regulator (Torex XC9258A). Remember that the input voltage range on this pin is 3.6 to 4.2 VDC. You can connect a single cell LiPo/Lithium Ion or a DC supply source to this pin for powering the Argon. This pin is internally connected to the positive terminal of the LiPo connector. See also Long Term Support (LTS) releases. For the latest version shipped from the factory, see Manufacturing firmware versions page.
Earlier versions of Device OS have reached their end-of-support dates.įor information on upgrading Device OS, see Version information. The 2.x LTS release line is in the Extended Support and Maintenance (ESM) window and will stop being supported in 2024. Device OS 3.x is a developer preview release and has reached its end-of-support date. While Argons can use an older version of Device OS: It is recommended that you use the latest version in the 4.x LTS release line with the Argon. Meets the Adafruit Feather specification in dimensions and pinout. Integrated Li-Po charging and battery connector. 20 mixed signal GPIO (6 x Analog, 8 x PWM), UART, I2C, SPI. 
Up to +8 dBm TX power (down to -20 dBm in 4 dB steps).
Supports DSP instructions, HW accelerated Floating Point Unit (FPU) and encryption functions. Bluetooth 5: 2 Mbps, 1 Mbps, 500 Kbps, 125 Kbps. Espressif ESP32-D0WD 2.4 GHz Wi-Fi coprocessor. The Argon is great for connecting existing projects to the Particle Device Cloud over a Wi-Fi network. It is based on the Nordic nRF52840 and has built-in battery charging circuitry so it’s easy to connect a Li-Po and deploy your local network in minutes. The Argon is a powerful Wi-Fi enabled development board for Wi-Fi networks.
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