Connecting Raspberry Pi to the Real World
Sequent Microsystems designs and manufactures I/O cards for Raspberry Pi. Our products expand the capabilities of Raspberry Pi with analog inputs and outputs (0–3.3V, 0–10V, 4–20mA), optically isolated inputs from 3 to 240V AC or DC, 2 to 16 relays and solid-state outputs, event counters, quadrature encoders, 1K/10K thermistors, all types of thermocouples, PT100 and PT1000 RTD sensor inputs, real-time clock with battery backup, RS485/MODBUS, RS232, RS422, M-BUS, 1-Wire, CAN communication, and MOSFET and TRIAC load drivers. All Sequent cards communicate with Raspberry Pi exclusively through the I2C port, leaving the GPIO pins available for other tasks. We also offer three multifunction boards—Home, Building, and Industrial Automation—that serve as “Swiss Army Knife” solutions by integrating a wide range of functions in compact form. For additional capacity, cards can be stacked up to eight levels, and extra universal inputs, relays, or solid-state outputs can be added using compatible expansion cards. Up to eight cards of each type may be combined on a single Raspberry Pi, offering virtually unlimited flexibility. Custom inquiries are always welcome.