Battery Management Module (BMM)
This 28 cell Battery Management Module (BMM) was designed by 9CI for a customer. The system provided the customer with the following specifications:
- High precision cell level voltage measurement (1mV resolution, 0 to 4.5V/cell)
- High precision cell temperature measurement (0.5 deg C resolution, -40 to 85C range)
- 3 to 28 cell operation
- Isolated communications to BCM
- Ultra low quescent current (~0.015mA)
Generic Wireless Sensor Node
This board was designed as a wireless sensor development platform, pairing a low power wireless radio with an ultra-efficient power supply design. Firmware was developed to actively sleep the entire system based on a variety of environmental parameters allowing the system to perform remote data collection and monitoring while using very little power (could be deployed for months while running on a coin cell battery).
Modular UART/USB to Wireless Radio Board
9CI designed this compact radio module for a Drone / UAS / UAV customer, providing them with a long range, highly robust radio link. This module includes dual USB interfaces (configuration and data), a single UART interface (data), on-board mode selection switch (PCB bottom), and an on-board microcontroller that that provides auto-configuration/pairing of radios as well as dynamic transmit power management depending on link quality.