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STD 16x Thermocouple Board
License: Public Domain
Mode: Editors' pick
General board for logging thermocouples through an ESP32, an ADS1115, and some multiplexers. Cold junction compensation would, ideally, be done by TMP117 but those are impossible to get a hold of so I'm just using a DS18B20. Resolution is +/- 0.1°C for E-Type thermocouples and can easily read about 1,000°C and own to cryogenic temperatures. Tested it on a rocket engine and also thermal conductivity rig. I advise swapping out the push connectors for just screw terminals. I don't really like the push connectors.
Note that from 0-900°C this board will loose ~80uV to resistors so your recorded temp will drop very slightly as temp increases.
ID | Name | Designator | Footprint | Quantity | BOM_Supplier | BOM_Manufacturer Part | BOM_Manufacturer | BOM_Supplier Part |
---|---|---|---|---|---|---|---|---|
1 | 10nF | C1,C2,C6,C7,C9,C10,C11,C12,C13,C14,C15,C16,C17,C18,C19,C20,C21,C22 | C0805 | 18 | LCSC | CL21B103KBANNNC | SAMSUNG | C1710 |
2 | 1uF | C3 | C0805 | 1 | LCSC | CL21B105KBFNNNE | SAMSUNG | C28323 |
3 | 100nF | C4,C5 | C0805 | 2 | LCSC | CC0805KRX7R9BB104 | YAGEO | C49678 |
4 | 10uF | C8 | C0805 | 1 | LCSC | CL21A106KAYNNNE | SAMSUNG | C15850 |
5 | 41-F01-250-4 | CN1,CN2,CN3,CN4,CN5,CN6,CN7,CN8 | CONN-TH_41-F01-250-4 | 8 | LCSC | 41-F01-250-4 | HIWA | C173392 |
6 | SM04B-SRSS-TB (LF)(SN) | CN9,CN10,CN11,CN12,CN13 | CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN | 5 | LCSC | SM04B-SRSS-TB (LF)(SN) | JST Sales America | C160404 |
7 | 0805G (Green) | LED1 | LED0805-RD | 1 | LCSC | 0805G (Green) | KENTO | C2297 |
8 | 1M | R1,R2,R5,R9,R12,R13,R14,R15,R16,R17,R18,R19,R20,R21,R22,R23,R24,R25,R26,R27,R28,R29,R30,R31,R32,R33,R34,R35,R36,R37,R38,R39,R40,R41 | R0805 | 34 | LCSC | 0805W8F1004T5E | UniOhm | C17514 |
9 | 10K | R3,R4,R6,R7,R8,R42,R43,R44,R45 | R0805 | 9 | LCSC | 0805W8F1002T5E | UniOhm | C17414 |
10 | 100 | R10,R11 | R0805 | 2 | LCSC | 0805W8F1000T5E | UniOhm | C17408 |
11 | CD74HC4067M96 | U2,U4 | SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL | 2 | LCSC | CD74HC4067M96 | Texas Instruments | C496123 |
12 | TMP117AIDRVR | U3 | WDFN-6_L2.0-W2.0-P0.65-TL-EP | 1 | LCSC | TMP117AIDRVR | TI(德州仪器) | C699536 |
13 | ADS1115IDGSR | U5 | MSOP-10_L3.0-W3.0-P0.50-LS5.0-BL | 1 | LCSC | ADS1115IDGSR | TI | C37593 |
14 | MCP9808T-E/MS | U6 | MSOP-8_L3.0-W3.0-P0.65-LS4.9-BL | 1 | LCSC | MCP9808T-E/MS | Microchip Tech | C129490 |
15 | DS18B20 | U7 | TO-92-3_L4.9-W3.7-P1.27-L | 1 | LCSC | DS18B20 | Youtai Semiconductor Co., Ltd. | C376006 |
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