Fluke 8050A TFT Display
Fluke 8050A TFT Display
A project to rip out the original 4½-digit 7-segment LCD of a Fluke 8050A desktop multimeter and replace it with a 320×240 color TFT graphical display, driven by an STM32 "Maple Mini" that taps the meter's display-bus signals.
Status: complete and in daily use · Built: 2016–2020 · Written up: October 2020
Documentation
| Fluke 8050A Multimeter LCD Display Project | Introduction, motivation, and what the project does |
| Fluke 8050A Displays | How the meter displays measurements — the display "language" on the bus |
| Fluke 8050A Theory of Operation | How the retrofit works, end to end |
| Fluke 8050A Hardware | Hardware design: the Maple Mini, connections, and construction |
| Fluke 3870 microcontroller pin functions | Fairchild 3870 LCD-driver pin notes |
| STM32F103 I/O pin assignments | STM32 I/O pin assignments |
| Fluke 8050A Software | Firmware: decoding the display bus and driving the TFT |
| Fluke 8050A Firmware Installation | Installation into the meter |
| Fluke 8050A Display Use and Construction Notes | Construction details and day-to-day use |
| Fluke 8050A Credits | Credits, references, and related work |
Reference material
- Fluke 8050A service manual (PDF)
- Fluke 8050A addendum (PDF)
- Fairchild 3850/3870 LCD driver datasheet (PDF)
- ILI9341 TFT controller datasheet (PDF)
Originally hosted on a DokuWiki; these pages were migrated and reorganized in 2020.