UNS Potentiostat
About the UNS Potentiostat PCB
UNS Potentiostat is an open source PCB design by danilocoletto, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 82 × 100 mm, with 113 components from 61 distinct parts.
Other key parts include the LMP7702MAX_NOPB, LMP7701MFX_NOPB, MAX5217GUA+, OPA2320AIDR and LM4040AIM3X-2.5_NOPB. By type, the board carries 56 capacitors, 31 resistors, 15 ICs, 5 connectors, 3 diodes and 1 crystal.
It belongs with the iot & wireless and test & measurement designs in this gallery.
From the project
- Real-time embedded architecture using ESP32 + FreeRTOS - 24-bit precision ADC (ADS1255) for nanoampere current measurements - 16-bit DAC waveform generation for electrochemical techniques - Modular analog front-end (AFE) design - Designed for voltammetry and amperometry - KiCad
- Real-time embedded architecture using ESP32 + FreeRTOS - 24-bit precision ADC (ADS1255) for nanoampere current measurements - 16-bit DAC waveform generation for electrochemical techniques - Modular analog front-end (AFE) design - Designed for voltammetry and amperometry - KiCad open hardware design - Firmware based on ESP-IDF
This repository contains the open-source hardware and firmware for a Real-Time Embedded Potentiostat. Designed as a high-precision modular extension board, this instrument allows for advanced electrochemical analysis (Voltammetry, Amperometry) in field applications.
Main components on the UNS Potentiostat
UNS Potentiostat bill of materials (BOM)
113 components, 61 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMP7702MAX_NOPB Texas Instruments | SOIC127P600X175_LMP7702 | IC1 |
| 2 | LMP7701MFX_NOPB Texas Instruments | SOT95P280X145_LMP7701 | IC2, IC3 |
| 1 | MAX5217GUA+ Analog Devices | SOP65P490X110_MAX5217 | IC4 |
| 1 | OPA2320AIDR | SOIC127P600X175-8N | IC5 |
| 1 | LM4040AIM3X-2.5_NOPB Texas Instruments | SOT95P237X112_LM40402_5 | IC6 |
| 1 | LM4040A50IDBZR Texas Instruments | SOT95P237X112_LM4040A5 | IC7 |
| 1 | OPA354AIDBVT Texas Instruments | SOT95P280X145_OPA354 | IC8 |
| 1 | MAX4737EUD+ | MAX4737 | U1 |
| 1 | LMP7721MA/NOPB | M08ALMP7721_ | U2 |
| 1 | ADS1255IDBR | DB20_ADS1255 | U3 |
| 1 | MAX5491LA01000+T | SOT23_5491 | U4 |
| 1 | MAX4617CSE+ | MAX4617 | U5 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U6 |
| 1 | AMS1117-5.0 | SOT-223-3_TabPin2 | U7 |
| 1 | XTAL8MHZ ECS | CRYSTAL_8 | X1 |
| 3 | Conn_Coaxial | BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1, J3, J5 |
| 1 | CONN_02X15_ODD_EVEN Conn_02x15_Odd_Even | PinSocket_2x15_P2.54mm_Horizontal | J2 |
| 1 | USB_B_Micro | USB_Micro-B_GCT_USB3076-30-A | J7 |
| 1 | JUMPER_2_OPEN Jumper_2_Open | TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | JP3 |
| 1 | Red | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Yellow | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2 |
| 1 | Green | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3 |
| 1 | FerriteBead_Small Sunlord | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 21 | 100N 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C4, C5, C13, C14, C19, C20 +13 |
| 2 | 10N 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C46 |
| 1 | 56N 56n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 2n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7 |
| 1 | 200P 200p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 20P 20p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 1 | 2p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10 |
| 1 | 0.2P 0.2p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11 |
| 1 | 0.1P 0.1p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12 |
| 1 | 68P 68p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15 |
| 1 | 160P 160p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16 |
| 2 | 180P 180p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C18 |
| 2 | 1u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C21, C28 |
| 3 | 47U 47u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C22, C25, C35 |
| 5 | 100P 100p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C24, C27, C37, C39, C41 |
| 1 | 100U 10u | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C30 |
| 1 | 0.1U 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C31 |
| 1 | 47U 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C32 |
| 2 | 10U 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C33, C43 |
| 2 | 18P 18p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C44, C45 |
| 1 | 2.2N 2.2n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C47 |
| 1 | 10U 10u | CP_Elec_4x5.4 | C49 |
| 3 | 10U 10u | CP_EIA-6032-20_AVX-F_Pad2.25x2.35mm_HandSolder | C51, C53, C55 |
| 6 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R9, R26, R27, R28 |
| 1 | 3k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 30K 30k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 300K 300k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 3M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 30M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 100M | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 2 | 18.7K 18.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R15 |
| 4 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R14, R19, R20 |
| 2 | 25.5K 25.5k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R13 |
| 3 | 4.7K 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16, R17, R18 |
| 1 | 10K 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21 |
| 2 | 49.9 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R23 |
| 2 | 300 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R24, R25 |
| 3 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R29, R30, R31 |
UNS Potentiostat design files
The KiCad project lives in the danilocoletto/ESP32-Based-Embedded-Potentiostat-Extension-Board repository on GitHub; these links point at the commit this page was built from.
UNS Potentiostat: common questions
How big is the UNS Potentiostat PCB?
The UNS Potentiostat measures 82 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the UNS Potentiostat?
113 components, from 61 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 UNS Potentiostat design files?
From the danilocoletto/ESP32-Based-Embedded-Potentiostat-Extension-Board repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the UNS Potentiostat design in my own project?
Yes, under the terms of its CC0-1.0 license, which danilocoletto chose for the repository.
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