GALLERY: MX12005
This is a 4 7-seg display that can be used to measure boost pressure for turbo cars. It has multiple display modes that tyou can set. It uses MPXH6400 pressure sensor that measures absolute pressure up to 4Bar. So you can measure up to 3 Bar of boost pressure. We tried to keep it as compact as possible. It measures only 31x16 mm. It has four 2mm holes that should make mounting an ease.
| Designator | Value | Footprint | Quantity | Farnell |
|---|
| C1, C3, C4 | 100nF | C0805 | 3 | | | C2 | 47pF | C0805 | 1 | | | C5 | 47uF/25V | C1210 | 1 | | | Flex | | MC34821 | 1 | 1661219 | | LED1, LED2, LED3, LED4 | HDSM283C | HDSM283C | 4 | 1651411 | | Prg | Header 1x6 | HDR1X6 | 1 | | | PWR | Header 1x2 | HDR1X2 | 1 | | | Q1, Q2 | BC847BS | SOT363_N | 2 | 1081234 | | R1 | 4k7 | C0805 | 1 | | | R2 | 51k | C0805 | 1 | | | R3 | 1k | C0805 | 1 | | | RA1 | 4k7 | CAT16-48 | 1 | 1770137 | | RA2, RA3 | 1k | CAT16-48 | 2 | 1770132 | | U1 | PIC16F1828 | SSOP-SS20_L | 1 | 1814927 | | U2 | MPXH6300AC6U | MPXH6300 | 1 | 1316092, 1353754, 1316091 | | U3 | LM1117MP-5 | MP04A_N | 1 | 1652314 |
Source code can be found on sourceforge.net as GIT repository
  
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