Demo board
About the Demo board
Demo board is an open source PCB design by Charmander542, published on GitHub. It is a 2-layer board measuring 62 × 80.3 mm, with 161 components from 12 distinct parts.
Other key parts include the 74HC595 and SN74LV4T125. By type, the board carries 73 resistors, 48 transistors, 24 diodes, 12 connectors and 4 ICs.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
Welcome to the EC463 Senior Design Group 6 Braille project repository.
Welcome to the EC463 Senior Design Group 6 Braille project repository.
Main Google Doc before README migration: https://docs.google.com/document/d/1c1Lonarr0yz-ggmuZfPKdth9k53kwFiAMk2oVoeEsT8/edit?usp=sharing
Features: - ✨ Convert text to Unicode braille characters - 📁 Convert entire text files to braille - 🔍 Detailed character-by-character analysis - 📊 Visual dot pattern representation - 🎯 Full support for letters, numbers, punctuation, and symbols
Main components on the Demo board
Demo board bill of materials (BOM)
161 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74HC595 | SOIC-16W_5.3x10.2mm_P1.27mm | U1, U2, U3 |
| 1 | SN74LV4T125 | TSSOP-14_4.4x5mm_P0.65mm | U4 |
| 24 | NMOS | SOT-89-3 | Q1, Q3, Q4, Q6, Q8, Q9, Q10, Q11 +16 |
| 24 | PMOS | SOT-89-3 | Q2, Q5, Q7, Q13, Q14, Q15, Q16, Q17 +16 |
| 8 | Conn_01x06_Socket | PinSocket_2x03_P2.54mm_Vertical | J0, J1, J2, J3, J4, J9, J10, J11 |
| 2 | Conn_01x02_Socket | AMASS_XT60-M_1x02_P7.20mm_Vertical | J5, J6 |
| 1 | Conn_01x06_Socket | PinSocket_2x03_P2.54mm_Horizontal | J7 |
| 1 | Conn_01x06_Pin | PinHeader_2x03_P2.54mm_Horizontal | J8 |
| 24 | BZT52C9V1-7-F | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +16 |
| 25 | 10K | R_0603_1608Metric | R1, R4, R6, R13, R14, R15, R16, R17 +17 |
| 24 | 10M | R_0603_1608Metric | R2, R3, R5, R7, R8, R9, R10, R11 +16 |
| 24 | 1K | R_0603_1608Metric | R50, R51, R52, R53, R54, R55, R56, R57 +16 |
Demo board design files
The KiCad project lives in the Charmander542/Senior-Design-Group-6-Braille repository on GitHub; these links point at the commit this page was built from.
Demo board: common questions
How big is the Demo board?
The Demo board measures 62 × 80.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Demo board?
161 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Demo board design files?
From the Charmander542/Senior-Design-Group-6-Braille repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Demo board design in my own project?
The repository has no license, so all rights stay with Charmander542. Use it as a reference, and ask the author before reusing the design.
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