ModuleController old
dennis9819·split-flap-controller·cad/Schematics/module_controller/ModuleController_old.kicad_pcb
About the ModuleController old PCB
ModuleController old is an open source AVR/Arduino PCB design by dennis9819, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 68.3 × 90 mm, with 20 components from 14 distinct parts.
Its main chip is the ATmega8A-A, from the AVR/Arduino family. Other key parts include the ULN2003, A1101 and SN75176AP. By type, the board carries 8 capacitors, 4 ICs, 4 resistors, 2 connectors, 1 crystal and 1 fuse.
It belongs with the displays & leds designs in this gallery.
From the project
Sourcecode and Schematics for the controller of my split-flap display
Welcome to split-flap-controller, the firmware + hardware design for driving a modular, scalable split-flap display system.
Development of this project began in 2024 with the goal of creating a robust, DIY split-flap display that anyone can build and customize themselves. Inspired by the iconic Frankfurt Airport display, this project aims to recreate the nostalgic mechanical aesthetic and characteristic flipping sound that made those displays so memorable.

Main components on the ModuleController old
ModuleController old bill of materials (BOM)
20 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ULN2003 | DIP-16_W7.62mm | U1 |
| 1 | A1101 | UA A1101 | U2 |
| 1 | SN75176AP | DIP-8_W7.62mm | U3 |
| 1 | ATmega8A-A | TQFP-32_7x7mm_P0.8mm | U4 |
| 1 | 16,0000-HC49U-S | Crystal_HC49-U_Vertical | Y1 |
| 1 | JST B5B-XH-A | JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J1 |
| 1 | 2x08 Edge Connector | Card Edge 16 power | J6 |
| 1 | RXEF010 | C_Disc_D7.5mm_W2.5mm_P5.00mm | F1 |
| 1 | 10u 35V | CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 10u 16V | C_1206_3216Metric | C2 |
| 2 | 22p | C_0805_2012Metric | C3, C4 |
| 4 | 100n | C_0805_2012Metric | C5, C6, C7, C8 |
| 3 | 10k | R_0805_2012Metric | R1, R2, R4 |
| 1 | 1k | R_0805_2012Metric | R3 |
ModuleController old design files
The KiCad project lives in the dennis9819/split-flap-controller repository on GitHub; these links point at the commit this page was built from.
ModuleController old: common questions
What microcontroller does the ModuleController old use?
The ModuleController old is built around the ATmega8A-A, from the AVR/Arduino family.
How big is the ModuleController old PCB?
The ModuleController old measures 68.3 × 90 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ModuleController old?
20 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the ModuleController old design files?
From the dennis9819/split-flap-controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ModuleController old design in my own project?
Yes, under the terms of its AGPL-3.0 license, which dennis9819 chose for the repository.
Can I test firmware for the ModuleController old without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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