2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342
2 layers65 × 128.5 mm
MiniDiv
benjiaomodular/MiniDiv3A clock divider based on ther CD4040 CMOS IC
- Size
- 65 × 128.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 76
- Pads
- 228
- Tracks, vias
- 496, 302
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 May 2023
- Updated
- 13 Sep 2025
Overview
MiniDiv is an open-source printed circuit board by benjiaomodular, from the benjiaomodular/MiniDiv repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 65 × 128.5 mm with 75 parts on 76 nets, routed with 496 tracks and 302 vias.
It is built around the LM358 and CD4040BNSR. Its parts include 29 resistors, 11 connectors, 7 capacitors, 5 ICs and 4 diodes. It belongs with the lEDs and displays boards of this library.
Main components
2
LM358
SOP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 24mA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOP-8 Operational Amplifier ROHSMSKSEMIOperational Amplifier
CD4040BNSR
SO-16-208mil-55℃~+125℃ 1 12 12MHz 3V~18V 65ns Asynchronous Divide-by-2 Falling Edge SO-16-208mil Counters, Dividers ROHSTexas InstrumentsCounters / Dividers
README
README.mdMiniDiv
A simple clock divider based on HAGIWO's design.
Schematics
Project sponsored by PCBWay.
See my full docs on my website: https://benjiaomodular.com/post/2024-11-22-minidiv-pcb/
Versions
v0.3 - Fixed LED clearance issue
- To address LED clearance issues, I moved the LEDs to be mounted to the back, facing down, such that the LED shines through a hole on the board.
v0.2 - Initial release
- First working version
- ISSUE: The LEDs were preventing the jacks from going in completly. The module still works but it might cause problems in the future.
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R14, R15, R16, R17, R22, R23, R24, R25, R28, R29 |
| 10 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R12, R13, R18, R19, R20, R21, R26, R27 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R7 |
| 3 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D3 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R4 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C7 |
| 2 | 22uF | Capacitor_SMD:CP_Elec_4x3.9 | C2, C3 |
| 2 | 40106 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1, U3 |
| 2 | PJ3001F | benjiaomodular:AudioJack_3.5mm | CLOCK_IN1, RESET_IN1 |
| 1 | 3.3k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 33k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | B100k | benjiaomodular:Potentiometer_RV09 | RV1 |
| 1 | CD4040BNSR | Package_SO:SOIC-16W_5.3x10.2mm_P1.27mm | U5 |
| 1 | Conn_01x10_Pin | benjiaomodular:Header_IDC2x05_NoArrow | J1 |
| 1 | LED | LED_THT:LED_D3.0mm | D4 |
| 1 | LM317_SOT-223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | LM358 | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U2 |
| 1 | LOGO | LOGO | G*** |
| 1 | OUT_1024 | benjiaomodular:AudioJack_PJ3001F_0805LED | J11 |
| 1 | OUT_128 | benjiaomodular:AudioJack_PJ3001F_0805LED | J8 |
| 1 | OUT_16 | benjiaomodular:AudioJack_PJ3001F_0805LED | J5 |
| 1 | OUT_2 | benjiaomodular:AudioJack_PJ3001F_0805LED | J2 |
| 1 | OUT_256 | benjiaomodular:AudioJack_PJ3001F_0805LED | J9 |
| 1 | OUT_32 | benjiaomodular:AudioJack_PJ3001F_0805LED | J6 |
| 1 | OUT_4 | benjiaomodular:AudioJack_PJ3001F_0805LED | J3 |
| 1 | OUT_512 | benjiaomodular:AudioJack_PJ3001F_0805LED | J10 |
| 1 | OUT_64 | benjiaomodular:AudioJack_PJ3001F_0805LED | J7 |
| 1 | OUT_8 | benjiaomodular:AudioJack_PJ3001F_0805LED | J4 |
| 1 | SW_DPDT_x2 | benjiaomodular:Button_KFC7x7 | SW1 |
The 61 most common of 75 parts.
Similar boards
- 2 layers68.8 × 53.6 mm
ZArduino
zmaker/arduino_cookbook
gli sketch del nuovo progetto Arduino Cookbook e dei video di YouTube
46 parts269 - 2 layers152 × 88 mm
RFBitBangSMT
profdc9/RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
271 parts222 - 2 layers118 × 103.5 mm
- 2 layers113 × 62.2 mm
FullScope
tvlad1234/pillScopePlus
Oscilloscope based around the STM32F401 Black Pill and a color LCD screen
15 parts165Apache-2.0 - 2 layers75.2 × 61.1 mm
- 2 layers144.1 × 182.2 mm
SHVC CPU-01
starlightk7/OpenSFC
OSHW Reproduction Parts related to the Super Famicom / Super Nintendo game console
498 parts114CERN-OHL-S-2.0 - 2 layers100 × 85 mm
Questions
How big is the MiniDiv PCB?
It measures 65 × 128.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MiniDiv use?
75 parts, built around the LM358 and CD4040BNSR. 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 MiniDiv KiCad files?
From the benjiaomodular/MiniDiv repository on GitHub, at the commit this page was made from: the board is hardware/circuit/MiniDiv/MiniDiv.kicad_pcb and its schematic hardware/circuit/MiniDiv/MiniDiv.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MiniDiv design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).