Eval¶

• MAX31855; SPI
• Simple stm32f042 with 32KB flash; 16KB might be tough due to lot of periphery
• Send temperature every X seconds
• 10nF across T+/T- (Datasheet recommendation)
• Eval kit has 0603 BLM18PG471 ferrit beans in series to sensor on T+ and T-; 470 Ohms @ 100 MHz; Current Rating (Max) 1A; DC Resistance (DCR) (Max) 200mOhm
• 100nF across VDD/GND
• No further power injection

Periphery¶

• SPI; 3
• I2C; 2
• Uart; 2
• SWD; 2
• 2 x LED; 2
• Rx/Tx LED; 2

-> 13

MCU¶

• STM32F042G6U6

Temperaturfuehler¶

https://www.testo.com/de-DE/wasserdichter-lebensmittelfuehler-aus-edelstahl-ip65/p/0602-2292#tab-downloads

STM32L152R6T
https://www.st.com/resource/en/datasheet/stm32l152r6.pdf

Buchse
https://www.tme.eu/de/details/im-k-ff-iec-/sonstige-steckverbinder/
https://www.tme.eu/de/details/g9991451010hk00/temperatursensoren-zubehor/guenther/99-91451010-hk00/

AM-K-PCB
https://www.hamitherm.com/wp-content/uploads/01.04.01_CMJ-xxPF-Thermocouple-Connector-Miniature-PCB.pdf
https://www.distrelec.de/Web/Downloads/_b/ro/Thermocouples_2014_eng_bro.pdf
https://www.sensorshop24.de/miniaturkupplung-fuer-typ-k-j-t-n-r-s

Dimensions
https://www.farnell.com/datasheets/1918851.pdf