Close

LRMS Analog IO Board - R1

A project log for LoRa End Node & Remote Monitoring System

A LoRa remote solar powered monitoring system designed to be as flexible as possible and connect to a variety of sensors/sensor modules

jstuartjstuart 09/12/2022 at 23:360 Comments

The LRMS analog I/O board is intended for analog sensors or custom sensor designs that do not have digital interfaces. In addition to the analog I/O the  board also supports I2C and TTL UART connections.

A high speed amplifier with a sample and hold peak detector with a DC boost converter has been included for photo detectors such as a silicon photo-multiplier.

Board Connectors:

J1 & J2 : Two Configurable nano power operational amplifiers, can be configured as Differential, Single ended Non-Inverting/Inverting. Each amplifier output  is buffered with a unity gain amplifier to the ADC channels.

(6Kz unity gain, 350nA per channel)

J3 : One high speed non-inverting operational amplifier with sample and hold peak detector.

(250Mhz unity gain, 100Mhz GBW)

J8: DC boost converter up to 32 volts DC.

J6 & J7 : I2C bus interface connectors

J5 : RS-232 TTL UART Connector

Discussions