2 layers96.8 × 97 mm
Psoc5power
profdc9/DRSSTC-PCB-Pack
A pack of PCBs for a dual resonant solid state tesla coil setup. Pretty much everything you need.
133 parts59
4 layers165 × 80 mm
Relay control pcb
jacob-aa-dev/relay_control_system1Purpose: This system is designed to automate the capture of S (shear) and P (compression) waves of samples loaded into rock mechanic load frame systems.
- Size
- 165 × 80 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 27
- Pads
- 107
- Tracks, vias
- 109, 3
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Jul 2026
- Updated
- 26 Oct 2026
Overview
Relay control pcb is an open-source printed circuit board by jacob-aa-dev, from the jacob-aa-dev/relay_control_system repository on GitHub. It is a 4-layer board of 165 × 80 mm with 43 parts on 27 nets, routed with 109 tracks and 3 vias.
It is built around the IRLZ44N and 1N4733A. Its parts include 13 resistors, 9 diodes, 9 connectors, 3 transistors and 3 switches. It belongs with the home automation and IoT boards of this library.
Main components
2README
README.mdPurpose: This system is designed to automate the capture of S (shear) and P (compression) waves of samples loaded into rock mechanic load frame systems.
System description: The system has a few key components: a load frame with transducers, a controller (ESP32 in our case), a pulser (Olympus 5077 RP), a computer to run the software, and a relay board (PCB schematic provided, though other options are viable depending on your pulsers voltage range and GPIO voltage). A pulser generates a HV RFpulse into relay gates. If the gate is open, the pulse will continue to a specific electronic piezoelectric transducer to generate either a P or S wave at the top endcap. The wave passes through the sample and is converted back into a signal by another transducer on the bottom endcap and is then being measured on an oscilloscope.
The system cannot measure P and S waves simultaneously so the goal is to open a channel, send a pulse, record the result then close the channel before opening the next channel and repeating the process with another wave. Our system was configured for 3 channels S1, S2, and P. The software can be adjusted to allow for more channels but this will require more relay channels.
KiCad Relay PCB:
Software UI:
Stability improvements and UI changes to come!
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5 |
| 4 | 1000 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R102, R1001, R1003, R1005 |
| 4 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R101, R1002, R1004, R1006 |
| 4 | 680 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R3, R4 |
| 4 | MountingHole_M3 | MountingHole:MountingHole_3.2mm_M3 | H1001, H1002, H1003, H1004 |
| 3 | 1N4007 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1001, D1002, D1003 |
| 3 | AEV20E | Relay_THT:Altran_AEV20E-B | K1001, K1002, K1003 |
| 3 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1001, Q1002, Q1003 |
| 1 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 12VDD_IN | Library_Project:SRC_Connector_5-2_1x02_P5.00mm_Horizontal | J1 |
| 1 | 1N4733A | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D101 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R5 |
| 1 | 47uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C2 |
| 1 | GPIO_IN | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-4_1x04_P5.00mm_Horizontal | J2 |
| 1 | SIG1_P_OUT | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1006 |
| 1 | SIG1_S1_OUT | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1002 |
| 1 | SIG1_S2_OUT | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1004 |
| 1 | SIG_P_IN | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1005 |
| 1 | SIG_S1_IN | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1001 |
| 1 | SIG_S2_IN | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1003 |
| 1 | SIG_TRG_OUT | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J101 |
Questions
How big is the Relay control pcb PCB?
It measures 165 × 80 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Relay control pcb use?
43 parts, built around the IRLZ44N and 1N4733A. 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 Relay control pcb KiCad files?
From the jacob-aa-dev/relay_control_system repository on GitHub, at the commit this page was made from: the board is relay_control_pcb/relay_control_pcb.kicad_pcb and its schematic relay_control_pcb/relay_control_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Relay control pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask jacob-aa-dev before reusing the design.
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