On the board
ForgeBoardFlint
Small board. Long reach.
The node board. Fits where nothing else does, runs for months on a battery, and talks to your network out of the box.
Tech specs
Board size 50 × 30 mm. Operating range –40 °C to +85 °C. 20 µA in deep sleep.
Datasheet →- Processor
- ESP8266EX Tensilica L106 32‑bit RISC, 80 MHz (up to 160 MHz)
- Memory
- 4 MB SPI flash, 50 KB RAM
- Wi‑Fi
- IEEE 802.11 b/g/n (2.4 GHz), up to 72.2 Mbps, WPA / WPA2
- Network
- Integrated TCP/IP stack — IPv4, TCP, UDP, HTTP; station, soft‑AP & combined
- Radio
- On‑board PCB antenna, integrated PA / LNA / balun, TX +20 dBm (802.11b)
- Analogue
- 1× 10‑bit SAR ADC, 0–1.0 V
- Interfaces
- 2× UART (UART1 TX‑only), SPI & HSPI, I2S with DMA; software I2C (100 kHz), PWM, IR remote
- GPIO
- 12 programmable pins on headers
- USB
- USB Type‑C 2.0, data + power, on‑board USB‑to‑serial, 50 bps to 2 Mbps
- Power
- 1 A low‑noise CMOS LDO, 450 mV dropout, over‑current & over‑temperature protection
- Protection
- USB ESD; reverse‑polarity — P‑channel MOSFET (30 V, 4 A) + 40 V / 3 A Schottky
- Power saving
- 80 mA average, 20 µA deep sleep
- LEDs
- 2× LED (power, GPIO)
- Buttons
- RST + FLASH
- Operating temp.
- –40 °C to +85 °C
- Board size
- 50 × 30 mm
Works with
- ForgeBoard IDE
- USB‑C flashing
- On‑board USB‑to‑serial