LED chaser (THT version)

tmjnijssen·OSCD_demo_PCB·workshop/led_chaser_THT/led_chaser_THT.kicad_pcb

LED chaser (THT version) PCB layout, top view — open source board by tmjnijssen

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About the LED chaser (THT version) PCB

LED chaser (THT version) is an open source PCB design by tmjnijssen, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 37.5 × 50 mm, with 25 components from 11 distinct parts.

Other key parts include the NE555 and 4017. By type, the board carries 11 diodes, 5 capacitors, 4 resistors, 2 ICs, 1 connector and 1 switch.

It belongs with the sensors, iot & wireless and wearables designs in this gallery.

From the project

Open Science Community Delft demonstration PCB

A demonstration / teaching PCB built by the Open Science Community Delft to show what an open hardware project looks like in practice: full sources, an open licence, and everything needed to have the board made and reprogrammed by anyone.

It is a round, ~93 mm ESP32-C3 board shaped like the OSCD logo, with a ring of 12 addressable RGB LEDs, three sensors on a shared I²C bus, capacitive touch pads, and three push buttons. Plug it into USB-C, and the demo firmware lights the ring in response to tilt, touch, ambient light, and button presses.

Main components on the LED chaser (THT version)

LED chaser (THT version) bill of materials (BOM)

25 components, 11 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	NE555	DIP-8_W7.62mm	U1
1	4017	DIP-16_W7.62mm	U2
1	Conn_01x02	JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J1
1	100k	Potentiometer_Bourns_3339P_Vertical	RV1
1	ENABLE	SW_DIP_SPSTx01_Slide_6.7x4.1mm_W7.62mm_P2.54mm_LowProfile	SW1
10	LED	LED_D3.0mm	D1, D2, D3, D4, D5, D6, D7, D8 +2
1	1N5819	D_DO-35_SOD27_P10.16mm_Horizontal	D11
2	10uF	CP_Radial_D5.0mm_P2.50mm	C1, C5
3	10nF	C_Disc_D4.3mm_W1.9mm_P5.00mm	C2, C3, C4
2	10k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R4
2	1k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R3

LED chaser (THT version) design files

The KiCad project lives in the tmjnijssen/OSCD_demo_PCB repository on GitHub; these links point at the commit this page was built from.

LED chaser (THT version): common questions

How big is the LED chaser (THT version) PCB?

The LED chaser (THT version) measures 37.5 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LED chaser (THT version)?

25 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the LED chaser (THT version) design files?

From the tmjnijssen/OSCD_demo_PCB repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the LED chaser (THT version) design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which tmjnijssen chose for the repository.

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