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Open source potentiostat

samueloblenes·open-source-potentiostat·hardware/schematic/potentiostat circuit.kicad_sch

Open source potentiostat

About the Open source potentiostat PCB

Open source potentiostat is an open source NXP PCB design by samueloblenes, published on GitHub under the CERN-OHL-S-2.0 license. It is a board, with 65 components from 27 distinct parts.

Its main chip is the TEENSY4.1, from the NXP family. Other key parts include the OPA134, TL072, MCP4725XXX-XCH, ADS1115IDGS and DG442XY. By type, the board carries 32 capacitors, 17 resistors, 12 ICs and 4 connectors.

From the project

A fully open-source, low-cost potentiostat for electrochemical characterization, built as an alternative to commercial instruments.

A fully open-source, low-cost potentiostat for electrochemical characterization, built as an alternative to commercial instruments.

This project is an attempt to build a fully open - hardware, firmware, and software - potentiostat capable of electrochemical characterization, at a fraction of the cost of a comercial instrument.

The instrument is built around a three-electrode electrochemical cell, using a potentiostatic control loop to maintain a precise potential and a switchable-gain transimpedance amplifier to measure the resulting current. A Teensy 4.1 handles low-level control and data…

Main components on the Open source potentiostat

OPA134TL072TEENSY4.1MCP4725XXX-XCHADS1115IDGSDG442XYDG441xYADR4525ADR4533

Open source potentiostat bill of materials (BOM)

65 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
OPA134
U1
2
TL072
U2, U4
1
TEENSY4.1
Teensy4.1
U3
1
MCP4725XXX-XCH
MCP4725xxx-xCH
U5
1
ADS1115IDGS
U6
1
DG442XY
TC7662BxPA
U7
2
TL072
U8, U9
1
DG441xY
U10
1
ADR4525
U11
1
ADR4533
U12
4
Conn_01x02
J1, J2, J3, J4
1
50PF
50pF
C1
9
100NF
100nF
C2, C5, C6, C7, C9, C10, C12, C13 +1
4
10UF
10uF
C3, C4, C8, C11
1
100NF
10uF
C15
4
1uF
C16, C25, C26, C28
4
100nF
C17, C19, C20, C22
7
10uF
C18, C21, C23, C29, C30, C31, C32
2
0.1uF
C24, C27
5
10K
R1, R14, R17, R18, R19
Show 7 more
QtyPartRefs
5
10K
R2, R5, R6, R7, R11
1
8.25K
R3
1
12.12K
R4
2
10K
4.7K
R8, R9
1
1K
R10
1
100K
R12
1
1MEG
1Meg
R13

Open source potentiostat design files

The KiCad project lives in the samueloblenes/open-source-potentiostat repository on GitHub; these links point at the commit this page was built from.

Open source potentiostat: common questions

What microcontroller does the Open source potentiostat use?

The Open source potentiostat is built around the TEENSY4.1, from the NXP family.

How many components are on the Open source potentiostat?

65 components, from 27 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 Open source potentiostat design files?

From the samueloblenes/open-source-potentiostat repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.

Can I use the Open source potentiostat design in my own project?

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

Can I test firmware for the Open source potentiostat without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

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