

Sequencer
- Size
- 70.8 × 108.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 55
- Pads
- 142
- Tracks, vias
- 201, 8
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 4 Jul 2019
- Updated
- 4 Jul 2019
Overview
Sequencer is an open-source printed circuit board by sphawes, from the sphawes/diySynth repository on GitHub. It is a 2-layer board of 70.8 × 108.5 mm with 39 parts on 55 nets, routed with 201 tracks and 8 vias.
It is built around the NE556. Its parts include 10 diodes, 8 resistors, 7 connectors, 5 capacitors and 2 ICs.
Main components
1Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | D_ALT | Diode_SMD:D_SOD-523 | D1, D2, D3, D4, D5, D6 |
| 5 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R8, R9, R10, R11, R12 |
| 4 | 50K | stephen:slidePot | P1, P2, P3, P4 |
| 4 | LED | LED_THT:LED_D5.0mm | D7, D8, D9, D10 |
| 4 | SW_SPDT | stephen:PVA1_EE_H2_1.2NV2 | B1, B2, B3, B4 |
| 2 | 10nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3, C5 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2 |
| 1 | 1K | Potentiometer_THT:Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV2 |
| 1 | 220R | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | 220uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4 |
| 1 | 4017 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | 50K | Potentiometer_THT:Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV1 |
| 1 | 5K6 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3 |
| 1 | 680R | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | CV | stephen:molex_stereo_3.5mm_jack | J2 |
| 1 | C_Small | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1 |
| 1 | Conn_02x08_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x08_P2.54mm_Vertical | J3 |
| 1 | LOGO | stephen:stephenEmblemBigger | G*** |
| 1 | NE556 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | OUT | stephen:molex_stereo_3.5mm_jack | J1 |
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Questions
How big is the Sequencer PCB?
It measures 70.8 × 108.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sequencer use?
39 parts, built around the NE556. 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 Sequencer KiCad files?
From the sphawes/diySynth repository on GitHub, at the commit this page was made from: the board is sequencer/pcb/sequencer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sequencer design in my own project?
Its repository states no licence, so its author keeps all rights: ask sphawes before reusing the design.