2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
33 parts1kGPL-3.0
2 layers130 × 100 mm
Logicbuddy
grantrules/logicbuddyA durable, easy-to-solder printed circuit board featuring clear diagrams and labels for each component. Gain practical experience with soldering and circuit assembly, boosting your confidence and skillset! Discover how…
- Size
- 130 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 27
- Pads
- 93
- Tracks, vias
- 179, 0
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Sep 2024
- Updated
- 10 Jun 2025
Overview
Logicbuddy is an open-source printed circuit board by grantrules, from the grantrules/logicbuddy repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 130 × 100 mm with 33 parts on 27 nets, routed with 179 tracks and 0 vias.
Its parts include 13 resistors, 8 switches, 7 transistors, 4 diodes and 1 connector.
README
README.mdLogicBuddy
A durable, easy-to-solder printed circuit board featuring clear diagrams and labels for each component. Gain practical experience with soldering and circuit assembly, boosting your confidence and skillset! Discover how logic gates serve as the backbone of modern electronics, from simple devices to complex computers, and assemble a NAND latch to understand memory storage in digital circuits.
Parts
| Reference | Value |
|---|---|
| D1-D4 | LED |
| Q1-Q7 | NPN Transistor |
| R1-R4 | 345Ω resistor |
| R5-R11 | 1kΩ resistor |
| R12-13 | 10kΩ resistor |
| SW1-7 | SPST Switch |
| SW8 | DIP Switch |
Gates
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R7, R8, R9, R12, R13 |
| 7 | NPN | Package_TO_SOT_THT:TO-92L_HandSolder | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 7 | SW_SPST | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1, SW2, SW3, SW4, SW5, SW6, SW7 |
| 4 | 345 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R4, R10 |
| 4 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R11 |
| 1 | SW_DIP_x01 | Button_Switch_THT:SW_CK_JS202011CQN_DPDT_Straight | SW8 |
| 1 | USB_C_2PIN | Aliexpress crap:USB_C_2pin-aliexpress | J1 |
Questions
How big is the Logicbuddy PCB?
It measures 130 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Logicbuddy use?
33 parts. 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 Logicbuddy KiCad files?
From the grantrules/logicbuddy repository on GitHub, at the commit this page was made from: the board is kicad/logicbuddy.kicad_pcb and its schematic kicad/logicbuddy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Logicbuddy design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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