2 layers100 × 100 mm
V2.2 Mechanical Seven Segment Controller
OverInvented/Flippy
The code needed to build a mechanical 7-segment display that uses electromagnets to display characters
53 parts65
2 layers47 × 80.3 mm
Flipdot driver
tresonic/flipdot- Size
- 47 × 80.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 113
- Pads
- 302
- Tracks, vias
- 644, 72
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 May 2025
- Updated
- 2 Jun 2025
Overview
Flipdot driver is an open-source printed circuit board by tresonic, from the tresonic/flipdot repository on GitHub. It is a 2-layer board of 47 × 80.3 mm with 48 parts on 113 nets, routed with 644 tracks and 72 vias.
It is built around the 74HC595, TBD62785AFWG,EL and ULN2803A. Its parts include 18 resistors, 9 capacitors, 9 ICs, 9 transistors and 2 connectors.
Main components
3
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
TBD62785AFWG,EL
SOP-18-300mil-40℃~+85℃ 8 Active Low Low Side Switch SOP-18-300mil Darlington Transistor Arrays ROHSToshibaPower Distribution SwitchesULN2803A
SOP-18-300mil-40℃~+85℃ 0.93mA 100uA 15pF 20uA 30V 500mA 50V 8 SOP-18-300mil Darlington Transistor Arrays ROHSUMWDarlington Transistor Arrays
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R10, R11, R12, R13, R14, R15, R16, R17, R18 +2 |
| 9 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C9, C10 |
| 9 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 5 | 74HC595 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1, U3, U5, U7, U9 |
| 2 | TBD62785AFWG | Package_SO:SOP-18_7.495x11.515mm_P1.27mm | U8, U10 |
| 2 | ULN2803A | Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm | U2, U4 |
| 1 | BroseBackLeft | Connector_PinSocket_2.54mm:PinSocket_2x30_P2.54mm_Vertical | J1 |
| 1 | Conn_01x09_Pin | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J2 |
| 1 | LOGO | LOGO | G*** |
Questions
How big is the Flipdot driver PCB?
It measures 47 × 80.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Flipdot driver use?
48 parts, built around the 74HC595, TBD62785AFWG,EL and ULN2803A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Flipdot driver KiCad files?
From the tresonic/flipdot repository on GitHub, at the commit this page was made from: the board is hardware/flipdot_driver.kicad_pcb and its schematic hardware/flipdot_driver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Flipdot driver design in my own project?
Its repository states no licence, so its author keeps all rights: ask tresonic before reusing the design.
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