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David Allcock edited this page Mar 27, 2020 · 35 revisions

Thermostat is 2-channel temperature controller

Overview

  • Channel count: 2
  • Sensor: 10k NTC thermistor read by AD7172-2 ADC
  • Load (heater/TEC) drive: up to 8W (+-2A with 4V compliance) from MAX1968 driver
  • Form factor: 3U module or stand-alone AL enclosure (Hammond 1455C1202).
  • Output connectors: Sensor and load connect via either terminal block connector on the stand-alone enclosure version via internal 100mil pin-header on 3U version (can be broken out to a separate front panel with 2xD9, such as Schroff 30849-750).
  • Programming interface: Ethernet via RJ45 connector on the front panel
  • Indicators 4 front panel LEDs
  • Power supply: +12V DC (1.5A max) supplied either by a front-panel barrel connector, internal 100mils pin-header, PoE (up to 30W), or rear Molex connector (3U version only).
  • *Microprocessor: STM332F427ZI

Firmware

M-Labs repository

Previous Versions

Thermostat_Thorlabs: Based on a Thorlabs temperature control module
Thermostat v1: Prototype version based on a different microprocessor

Photos

2 channel 3U version (note this is photo of v1 - needs updating)

Thermostat

2 channel stand-alone version

Enclosure is Hammond PN 1455C1202

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