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Std EditionLM3914 Battery Level Meter
Profile：LM3914 Li-Ion Battery Level Meter
License: GPL 3.0
Description
A Quad LM3914N Adjustable Li-Ion Battery Level Meter. Note the LED segment is not your usual type, it was reversed so you cannot use normal LED segments without redesigning. Link in BOM for LED segments I used.
Video of project: https://youtu.be/u_-uY8or-Cc
Blog: https://ratti3.blogspot.co.uk
Gerber files and BOM list: https://github.com/Ratti3/LM3914N-Li-Ion-Battery-Meter
Documents
| ID | Name | Designator | Footprint | Quantity | BOM_Supplier Part | BOM_Supplier |
|---|---|---|---|---|---|---|
| 1 | 3k | R1_4,R1_1,R1_2,R1_3 | R0805 | 4 | C126350 | LCSC |
| 2 | 10u | C1,C2,C4,C3 | CAP-D5.0×F2.0 | 4 | 647-UMW1E100MDD | Mouser |
| 3 | 5K | VR1_1,VR1_4,VR1_2,VR1_3 | RES-ADJ-TH_3296X | 4 | C111778 | LCSC |
| 4 | SW_PUSH_DPDT | BATT1-2,BATT3-4 | SW_PUSH_BUTTON_MINI | 2 | C318861 | LCSC |
| 5 | 10-segment led bar display | BATTERY3,BATTERY1,BATTERY4,BATTERY2 | DIP20 | 4 | https://www.aliexpress.com/item/32877938733.html | AliExpress |
| 6 | PH-2AK | BATT3,BATT2,BATT4,BATT1 | CONN-TH_PH-2A | 4 | C8886 | LCSC |
| 7 | 50K | VR2_4,VR2_3,VR2_2,VR2_1 | RES-ADJ-TH_3296X | 4 | C111780 | LCSC |
| 8 | LM3914N | U4,U3,U2,U1 | DIP-18_L23.0-W6.5-P2.54-LS7.6-BL | 4 | C9408 | LCSC |
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Project Members