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STD MLX90640 thermal imager【OSHWhub】

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Profile:MLX90640 is used as a sensor thermal imager, the main control is stm32f401ccu6, the onboard flash is used as a U disk to save pictures, powered by lithium battery, 2-inch screen, small tool for testing whether the circuit board is hot

License: MIT

Creation time: 2023-08-25 10:56:54
Update time: 2023-08-28 15:32:40
Description
project from oswhhub user sjj12345
 
mlx90640, although the price is not cheap, but it is much cheaper than the finished product (the function is also corresponding to a little less), the main control stm32f401ccu6, the charging chip ip2312, and an 8m "big" flash soldered to the external flash, it feels like saving pictures Enough. The screen uses a 2-inch spi screen. The refresh is a bit slow (it can be used). The circuit board picture is as follows
Since it is a product, I drew a shell
The program part uses bilinear interpolation, transfers the corresponding sensor pixels to the screen display size minus a little space left by the edge, and uses it to write the interface. It uses the ready-made functions in the dsp library, and the processing speed of the actual measurement and handwriting is no different.
With the addition of a file system, saving pictures is a bit slow, taking several seconds
actual eff
Design Drawing
schematic diagram
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PCB
1 /
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ID Name Designator Footprint Quantity Paste Type
1 15pF C1,C2 C0603 2 CC0603JRNPO8BN150
2 4.7uF C3,C16 C0603 2 CC0603KRX5R6BB475
3 100nF C4,C5,C6,C7,C17,C18,C19,C20 C0603 8 CC0603KRX7R9BB104
4 22uF C8,C10,C11 C0805 3 CL21A226MAYNNNE
5 10uF C9,C12 C0805 2 0805X106M250NT
6 4.7uF C13 C0603 1 CL10A475KP8NNNC
7 22pF C14 C0603 1 CC0603FRNPO9BN220
8 10uF C15 C0603 1 GRT188R61E106ME13D
9 LESD3Z5.0CMT1G D2,D3 SOD-323_L1.8-W1.3-LS2.5-BI 2 LESD3Z5.0CMT1G
10 0.5K-AS-22PWBG FPC1 FPC-SMD_22P-P0.50_0.5K-AS-22PWB 1 0.5K-AS-22PWBG
11 HDR-M-2.54_1x4 J1,J2 HDR-M-2.54_1X4 2 HDR-M-2.54_1x4
12 HDR-M-2.54_1x2 J3 HDR-M-2.54_1X2 1 HDR-M-2.54_1x2
13 SIQ-02FVS3 K1 SIQ-02FVS3 1 SIQ-02FVS3
14 10uH L1 L0805 1 MLZ2012E100MT000
15 1uH L2 IND-SMD_L5.4-W5.2 1 YSPI0520-1R0M
16 2.2uH L3 L0806 1 LQM2MPN2R2MEHL
17 D-G060306G1-KS2 LED1,LED2,LED3 LED0603-RD 3 D-G060306G1-KS2
18 S8050_C908252 Q1 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR 1 S8050_C908252
19 0 R1 R0603 1 0603WAF0000T5E
20 5.1K R2,R3 R0603 2 0603WAJ0512T5E
21 10K R4,R18,R19 R0603 3 TC0325B1002T5E
22 1K R5 R0603 1 TC0325B1002T5E
23 2 R6 R0603 1 0603WAF200KT5E
24 0.5 R7 R0805 1 RTT05R500FTP
25 1K R8 R0603 1 RMC06031K1%N
26 51K R9 R0603 1 AR03BTCX5102
27 100 R10,R11 R0603 2 CR0603JA0101G
28 10R R12 R0603 1 TC0325B1002T5E
29 10K R13,R14 R0603 2 0603WAF1002T5E
30 22 R15,R16 R0603 2 0603WAJ0220T5E
31 1K R17 R0603 1 0603WAF1002T5E
32 4.7K R20,R21 R0603 2 RC0603JR-074K7L
33 442k R22 R0603 1 CR0603JA0101G
34 160k R23 R0603 1 CR0603JA0101G
35 680K R26 R0603 1 TC0325F6803T5E
36 150K R27 R0603 1 TR0603B150KP0525
37 ST-1185S SW1,SW2 SW-SMD_ST-1185S 2 ST-1185S
38 MK-12C02-G025 SW3 SW-SMD_MK-12C02-G025 1 MK-12C02-G025
39 TS-1086E-AC03526 SW4,SW5 SW-SMD_TS-1086E-AC03526 2 TS-1086E-AC03526
40 W25Q32JVSSIQ_C179173 U3 SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL 1 W25Q32JVSSIQ_C179173
41 IP2312-4V35 U4 ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP 1 IP2312-4V35
42 MLX90640(110POV) U5 MLX90640 1 MLX90640(110POV)
43 SY8088AAC U6 SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR 1 SY8088AAC
44 TYPE-611-T3 USB1 USB-C-SMD_TYPE-611-T3 1 TYPE-611-T3
45 25MHz X1 OSC-SMD_4P-L3.2-W2.5-BL 1 XXCEELNANF-25MHZ
46 STM32F401CCU6 U1,U2 UFQFPN-48_L7.0-W7.0-P0.50-BL-EP 2 STM32F401CCU6 1

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