2 layers144.8 × 88.9 mm
2 layers144.8 × 88.9 mm
Potentiostat
iorodeo/potentiostat57Rodeostat design files, software and firmware
- Size
- 144.8 × 88.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 142
- Nets
- 132
- Pads
- 503
- Tracks, vias
- 1,373, 70
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 20 Jun 2020
- Updated
- 29 Oct 2026
Overview
Potentiostat is an open-source printed circuit board by iorodeo, from the iorodeo/potentiostat repository on GitHub, published under the CC-BY-4.0 licence. It is a 2-layer board of 144.8 × 88.9 mm with 142 parts on 132 nets, routed with 1,373 tracks and 70 vias.
It is built around the OP07, TL072 and 74HC138. Its parts include 52 capacitors, 38 resistors, 22 connectors, 20 ICs and 2 diodes.
Main components
3
OP07
SOP-8-20℃~+85℃ -22V~-3V、3V~22V 1 1.8nA 1.8uV/℃ 10nV/√Hz@1kHz 120dB 15pA/℃ 170V/ms 2.7mA 22V 500kHz 60uV 800pA SOP-8 Operational Amplifier ROHSSlkorOperational AmplifierTL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
74HC138
SOP-160℃~+70℃ 24ns@5.0V,16pF 2V~6V 3/8 5.2mA 5.2mA 5uA 74HC Decoder Reverse function Single Supply SOP-16 Signal Switches, Multiplexers, Decoders ROHSGRSignal Switches, Multiplexers, Decoders
README
README.mdIO Rodeo Rodeostat
Hardware design, firmware and software for IO Rodeo's Rodeostat Potentiostat.
- Project site: http://potentiostat.iorodeo.com
Hardware
- Designed as a shield for teensy 3.2 development board.
- 12-bit voltage output with four range settings: +/- 1, 2, 5, 10V
- 16-bit current measurement with four range settings: +/- 1, 10, 100, 1000 uA ranges
- Can be programmed over USB using the Arduino IDE (teensyduino).
- Expansion headers with DIO, analog inputs, UART, I2C, and SPI
- Schematic
Firmware
- Implements many standard voltammetric methods including:
- constant voltage,
- cyclic voltammetry,
- sinusoidal voltammetry,
- linearsweep voltammetry,
- chronoamperometry,
- multistep.
- API for control over USB/Serial using messages in JSON.
- Easy to extend enabling users to add custom tests.
Libraries
- Python
Software
- Web app
- Documentation https://blog.iorodeo.com/rodeostat-software/
Parts
142| Qty | Value | Footprint | References |
|---|---|---|---|
| 39 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C24, C31 +23 |
| 15 | Conn_01x02 | pin_array:PIN_ARRAY_2X1 | P4, P5, P6, P7, P8, P9, P10, P11, P12, P17, P18, P19, P20, P21, P22 |
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R7, R9, R18, R19, R24, R33, R34, R36 |
| 9 | OP07 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U11, U12, U13, U14, U15, U16, U17, U18, U20 |
| 8 | 20k | Resistor_SMD:R_0603_1608Metric | R3, R4, R5, R8, R10, R13, R23, R25 |
| 5 | DG411xY | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3, U4, U5, U7, U8 |
| 4 | 33k | Resistor_SMD:R_0603_1608Metric | R1, R2, R26, R28 |
| 4 | 56nF | Capacitor_SMD:C_0603_1608Metric | C25, C26, C27, C28 |
| 4 | VAL** | 4-40 | H1, H2, H3, H4 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R12, R20, R21 |
| 3 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C9 |
| 3 | 74HC138 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1, U19, U21 |
| 3 | Conn_01x02 | ost_connblocks:CONNBLOCK2 | P1, P2, P3 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R31, R38 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R30, R37 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C22, C23 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R32, R35 |
| 2 | 50k | Resistor_SMD:R_0603_1608Metric | R11, R22 |
| 2 | BAS07-04 | Package_TO_SOT_SMD:SOT-23 | D1, D2 |
| 2 | Conn_02x02_Odd_Even | pin_array:PIN_ARRAY_2X2 | P15, P16 |
| 2 | Conn_02x05_Odd_Even | 5x2_shrd_header:5X2_SHRD_HEADER | P13, P14 |
| 2 | header_14_pos | dummy:header_14_pos | UA2, UB2 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C29 |
| 1 | 11k | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 12nF | Capacitor_SMD:C_0603_1608Metric | C30 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R27 |
| 1 | 3.3nF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 300 | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | 300k | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 30k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | Conn_01x03 | pin_array:PIN_ARRAY_3X1 | K1 |
| 1 | ITSY_BITSY_M4 | itsy_bitsy_m4:ITSY_BITSY_M4 | U2 |
| 1 | MEA1D05XXSC | MEA1:MEA1 | U6 |
| 1 | TL072 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 1 | header_5_pos | dummy:header_5_pos | UC2 |
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Questions
How big is the Potentiostat PCB?
It measures 144.8 × 88.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Potentiostat use?
142 parts, built around the OP07, TL072 and 74HC138. 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 Potentiostat KiCad files?
From the iorodeo/potentiostat repository on GitHub, at the commit this page was made from: the board is hardware/pcbs/itsy_bitsy_mx_shield_v0p1/low_current/potentiostat.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Potentiostat design in my own project?
Its repository publishes it under the CC-BY-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).