2 layers50 × 65 mm
2 layers113.3 × 84.4 mm
Signal Conditioner R3
DanMartins/Signal_ConditionerPCB signal conditioner implemented using KiCAD
- Size
- 113.3 × 84.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 41
- Nets
- 64
- Pads
- 159
- Tracks, vias
- 351, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 21 Jan 2024
- Updated
- 27 Feb 2026
Overview
Signal Conditioner R3 is an open-source printed circuit board by DanMartins, from the DanMartins/Signal_Conditioner repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 113.3 × 84.4 mm with 41 parts on 64 nets, routed with 351 tracks and 0 vias.
It is built around the NE5532, TL084 and 1N4749A, with the ADS1115 among its other parts. Its parts include 15 resistors, 12 connectors, 7 capacitors, 4 diodes and 2 ICs.
Main components
4
NE5532
SOP-8-22V~22V 0℃~+70℃ 100dB 10nA 14mA 2 40V/us 42mA 4mV 800nA 8nV/√Hz@30Hz Built-in compensation SOP-8 Operational Amplifier ROHSSungineOperational Amplifier
TL084
SOP-14-18V~18V 0℃~+70℃ 1.4mA 16V/us 20nA 3mV 4MHz 4nA 60mA 75dB Four channels Short-Circuit Protection、Built-in compensation SOP-14 FET Input Amplifiers ROHSGcoreOperational Amplifier
1N4749A
DO-41Zener DiodesLGEADS1115
UncategorisedTexas Instruments
README
README.mdSignal_Conditioner 
Hardware development for IoTControl to interface with analog signals for control systems on PhD program at University of São Paulo. Part of this work is open source and available here on GitHub and there is a channel on YouTube where you can find videos about IoTControl platform.
You may want to reach me on LinkedIn or ResearchGate, publications are available on ORCID and Lattes.
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_THT:C_Rect_L4.6mm_W2.0mm_P2.50mm_MKS02_FKP02 | C1, C2, C3, C4, C5, C6, C7 |
| 6 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R8, R11, R12, R14, R15 |
| 5 | 20k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R6, R7, R13 |
| 4 | 1N4749A | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4 |
| 4 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R9, R10 |
| 1 | +12V | MountingHole:MountingHole_2.2mm_M2_Pad | J5 |
| 1 | +5V | MountingHole:MountingHole_2.2mm_M2_Pad | J2 |
| 1 | -12V | MountingHole:MountingHole_2.2mm_M2_Pad | J6 |
| 1 | 0R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | Jumper1 |
| 1 | 0V | MountingHole:MountingHole_2.2mm_M2_Pad | J4 |
| 1 | ADS1115 | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J10 |
| 1 | Conn_01x12_Pin | Library:DIP-12_DAN.GPIO_Conn | J8 |
| 1 | Level Shifter | Library:DIP-8_DAN GPIO Connector | J14 |
| 1 | MCP 4725 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J13 |
| 1 | NE5532 | Package_DIP:DIP-8_W7.62mm_Socket | U2 |
| 1 | Raspberry_Pi_2_3 | Library:DIP-40_DAN_EXT-RaspGPIO | J9 |
| 1 | TL084 | Package_DIP:DIP-14_W7.62mm_Socket | U1 |
| 1 | VM | MountingHole:MountingHole_2.2mm_M2_Pad | J7 |
| 1 | VP | MountingHole:MountingHole_2.2mm_M2_Pad | J1 |
| 1 | VT | MountingHole:MountingHole_2.2mm_M2_Pad | J3 |
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Questions
How big is the Signal Conditioner R3 PCB?
It measures 113.3 × 84.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Signal Conditioner R3 use?
41 parts, built around the NE5532, TL084, 1N4749A and ADS1115. 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 Signal Conditioner R3 KiCad files?
From the DanMartins/Signal_Conditioner repository on GitHub, at the commit this page was made from: the board is KiCAD/Signal_Conditioner_R3.kicad_pcb and its schematic KiCAD/Signal_Conditioner_R3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Signal Conditioner R3 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).