2 layers181 × 97 mm
OpenDeck r3.1.2
shanteacontrols/OpenDeck
A platform for building interactive control and sensing devices using MIDI and OSC built with Zephyr RTOS.
262 parts960Apache-2.0
2 layers115 × 28 mm
Speed reader
lordbagel42/speed-reader1a shrimple Rapid Serial Visual Processing device
- Size
- 115 × 28 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 20
- Pads
- 56
- Tracks, vias
- 109, 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Jun 2026
- Updated
- 18 Jun 2026
Overview
Speed reader is an open-source printed circuit board by lordbagel42, from the lordbagel42/speed-reader repository on GitHub. It is a 2-layer board of 115 × 28 mm with 12 parts on 20 nets, routed with 109 tracks and 7 vias.
It is built around the 1N4148WT. Its parts include 4 diodes and 4 switches. It belongs with the interfaces and adapters boards and the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdSpeed Reader
There's a term called Rapid Serial Visual Processing.
Essentially, presenting just a single word at a time makes people read faster. This is that taken to the ultimate level!
BOM
| ITEM | QUANTITY | TOTAL PRICE | LINK | NOTES |
|---|---|---|---|---|
| Xiao esp32-c3 | 1 | $4.74 | https://www.seeedstudio.com/Seeed-XIAO-ESP32C3-p-5431.html | Best to buy the 3 pack, then you have extras for the future. |
| 1n4148 diode | 4 | $0.40 | https://www.digikey.com/en/products/detail/onsemi/1N4148/458603 | Recommend to just get a pack off aliexpress choice |
| 6mm Push Button Switch | 4 | $2.50 | https://www.adafruit.com/product/367 | Price is for a pack of 20 |
| Display | 1 | $8.24 | https://www.aliexpress.us/item/3256809079738832.html | Doesn't have to be this specific seller, just needs the same pinout and size. |
| M2x12 Bolts | 2 | $9.49 | https://www.amazon.com/Fgruh-1200PCS-Assortment-Washers-Assorted/dp/B0FGV5K8BT | Price is for a multi-pack of M2 bolts--most cost effective. |
| M2 Heat Set Inserts | 2 | $8.99 | https://www.amazon.com/M2-M2-5-M3-Threaded-Inserts/dp/B0FH4JQ3VB | Price is for a multi-pack of M2 (and other) inserts--most cost effective. |
| PCB | 1 | $6.90 | https://jlcpcb.com | Completely default options |
| Solder Paste | 1 | $8.99 | https://www.amazon.com/WIVIE-Solder-Paste-Clean-Melting/dp/B0CNLK9KDR | |
| JST-PH 2.0 Horizontal Connector | 1 | $6.62 | https://typeractive.xyz/products/battery-jack | I don't know anyone other than typeractive who sells these, somehow. |
Total raw cost: ~$57
MANUFACTURED PARTS BOM
| ITEM | QUANTITY | NOTES |
|---|---|---|
| Plate | 1 | FDM Print |
| Base | 1 | FDM Print |
| Acrylic | 1 | Lasercut - local makerspaces are the best! |
Credits
Made for Hack Club Pendant!
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1N4148WT | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4 |
| 4 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3, SW4 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BAT1 |
| 1 | LOGO | LOGO | G*** |
| 1 | XIAO-ESP32-C3-SMD | New_XIAO_Series_Footprints:XIAO-ESP32-C3-SMD | XIAO1 |
| 1 | ~ | display:display | DISPLAY1 |
Questions
How big is the Speed reader PCB?
It measures 115 × 28 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Speed reader use?
12 parts, built around the 1N4148WT. 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 Speed reader KiCad files?
From the lordbagel42/speed-reader repository on GitHub, at the commit this page was made from: the board is speed-reader.kicad_pcb and its schematic speed-reader.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Speed reader design in my own project?
Its repository states no licence, so its author keeps all rights: ask lordbagel42 before reusing the design.
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