2 layers63 × 110.5 mm
Spike n hold
BeeHive-org/BeeHive
BeeHive: a flexible open hardware platform for behavioural experiments
60 parts13MIT
2 layers45.5 × 48.5 mm
4 switch array
BeeHive-org/BeeHive13BeeHive: a flexible open hardware platform for behavioural experiments
- Size
- 45.5 × 48.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 20
- Pads
- 62
- Tracks, vias
- 72, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 14 Nov 2019
- Updated
- 22 Sep 2026
Overview
4 switch array is an open-source printed circuit board by BeeHive-org, from the BeeHive-org/BeeHive repository on GitHub, published under the MIT licence. It is a 2-layer board of 45.5 × 48.5 mm with 24 parts on 20 nets, routed with 72 tracks and 0 vias.
It is built around the 74HC595. Its parts include 8 connectors, 4 resistors, 4 transistors, 1 capacitor and 1 IC.
Main components
1README
hardware/PCBs/8_switch_array/readme.mdBeeHive system: 8 port switch array
Hardware overview
In order to allow to use arbitrary type and number of simple tools such as low power electronics (LEDs, fans, etc) in experiments, a set of 8 switch arrays was developed. The 8 pin version utilizes a 74HC595 shift register, allowing to connect more components with less amount of pins. The power fed to the element being switched can vary from 5 to 12 volts.
Programming switches
An 8 switch array behaves exactly like a 74HC595 shift register but transistor switches allow bigger currents to flow through given loads
Safety
Do not connect or disconnect connectors while power is ON. All adjustments must be done ONLY when power is OFF.
3D models
Current design of 8 switch version:
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J3, J4, J5, J6, J7, J8 |
| 4 | 270 | Resistor_THT:R_Box_L13.0mm_W4.0mm_P9.00mm | R1, R2, R3, R4 |
| 4 | Q_NPN_EBC | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2, Q3, Q4 |
| 2 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1, J2 |
| 1 | 100nF | Capacitor_THT:C_Disc_D7.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | LOGO | logo-beehive:logo-beehive-7_2х6_7mm | G*** |
The 19 most common of 24 parts.
Questions
How big is the 4 switch array PCB?
It measures 45.5 × 48.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 4 switch array use?
24 parts, built around the 74HC595. 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 4 switch array KiCad files?
From the BeeHive-org/BeeHive repository on GitHub, at the commit this page was made from: the board is hardware/PCBs/archive/4 switch array (ver 3)/4_switch_array.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 4 switch array design in my own project?
Its repository publishes it under the MIT 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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