MODULAR HARDWARE // 62-MIL CARD-EDGE IOT INTERCONNECT

Modular Sensor Architecture — Open Coin-Cell IoT Hardware Standard

The Pure Engineering Modular Sensor Architecture is an open hardware and firmware specification for building multi-year coin-cell wireless sensor prototypes without custom cables or solder joints. Modules interconnect through a zero-component 62-mil PCB card edge paired with AVX 009159010061916 open-ended board-to-board sockets.

Architecture & Technical Specifications

Hardware Architecture & Features

Zero-cost 62-mil PCB card-edge tab on sensor boards mates with AVX 009159010061916 board-to-board connectors.
10-pin standard bus: VCC (2.0 V to 3.3 V), RAW battery (3.3 V to 15 V), GND, I2C SDA, I2C SCK, UART TX/RX GPIOs, and open-collector wake-up interrupt on Pin 10.
Pass-through card-edge fingers allow multiple I2C and reversed-key SPI sensor boards to daisy-chain.
Primary Core Modules: Nordic nRF52 series (BLE / Cortex-M4F) and Texas Instruments CC2650 (multi-standard 2.4 GHz).
Recommended companion ICs: TI ADS7924 low-power I2C ADC, Semtech SX1508B I2C GPIO expander, and NXP SC16IS740 I2C-to-UART bridge.

Firmware, Software & Integration

Supported across Zephyr RTOS, Contiki OS, and Apache Mynewt.
Uses Protocol Buffers (nanopb) for compact schema-driven sensor payloads over BLE, MQTT, and MQTT-SN.
Designed for sub-microamp sensor sleep states and interrupt-driven wake-up on Pin 10.

Hardware Photos & Figures (3)

Modular Sensor Architecture hardware figure 1

Modular Sensor Architecture hardware figure 2

Modular Sensor Architecture hardware figure 3

Datasheets, Source Code & Reference Links

www.PUREmodules.com EXTERNAL ↗ KYOCERA AVX 00-9159 datasheet EXTERNAL ↗ contiki EXTERNAL ↗ MQTT EXTERNAL ↗ Protocol Buffers EXTERNAL ↗ nanoPb EXTERNAL ↗ nrf52 EXTERNAL ↗ cc2650 EXTERNAL ↗ ADS7924 EXTERNAL ↗ Mics 6814 sensor module PAGE → Semtech SX1508B EXTERNAL ↗ SC16IS740 datasheet EXTERNAL ↗ Grid-EYE-breakout PAGE → SI1153 Breakout PAGE → VL53L0 Breakout PAGE → road-map PAGE → Google Group EXTERNAL ↗ PUREmodules Ecosystem RELATED → nRF52 Core Module RELATED → PUREmodules Debug Pinout RELATED → Pure Soil Sensor RELATED →