4 layers50 × 50 mm
4 layers62.5 × 81.3 mm
Espresso hardware
AndersFrandsen/espresso-hardwareCustom PCB for the Rocket Gravimetric Espresso project, designed in KiCad 8. The board is powered via 5V USB-C on the XIAO module.
- Size
- 62.5 × 81.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 57
- Pads
- 110
- Tracks, vias
- 123, 18
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Jun 2026
- Updated
- 19 Jun 2026
Overview
Espresso hardware is an open-source printed circuit board by AndersFrandsen, from the AndersFrandsen/espresso-hardware repository on GitHub. It is a 4-layer board of 62.5 × 81.3 mm with 20 parts on 57 nets, routed with 123 tracks and 18 vias.
It is built around the NAU7802SGI and TCK108AF,LF. Its parts include 6 capacitors, 5 resistors, 4 connectors, 3 ICs and 1 diode. It belongs with the nRF52 and nRF5x boards of this library.
Main components
2
NAU7802SGI
SOP-16-40℃~+85℃ 2 2.1mA 2.7V~5.5V 24 4.9152MHz 80Hz Auto calibration、Built-in temperature sensor、Multiplexers、Power-on reset External External、Built-in I2C Sigma-Delta Support Yes SOP-16 Analog to Digital Converters (ADC) ROHSNuvoton TechAnalog To Digital Converters (ADC)
TCK108AF,LF
SC-74A(SOT-753)-40℃~+85℃ 1 1.1V~5.5V 1A 63mΩ Active Low Load Switch SC-74A(SOT-753) Power Distribution Switches ROHSToshibaPower Distribution Switches
README
README.mdHardware
Custom PCB for the Rocket Gravimetric Espresso project, designed in KiCad 8. The board is powered via 5V USB-C on the XIAO module.
Components
| Ref | Part | Description |
|---|---|---|
| U1 | Seeed XIAO nRF52840 | MCU (I2C, SPI) |
| U2 | NAU7802SGI | 24-bit ADC |
| U3 | TCK108AF | Load switch for pump control |
| J1 | 4-pin terminal block | TAL221 500g load cell connection |
| J3, J4 | 20-pin headers | SPI and I2C breakout for the (Adafruit 2.8" TFT) |
PCB Layout
Soldered Board
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C3, C5 |
| 2 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4 |
| 2 | 1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C6 |
| 2 | 47R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2 |
| 1 | 470pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4 |
| 1 | 50R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | 5V TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | Conn_I2C | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical | J4 |
| 1 | Conn_SPI | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
| 1 | NAU7802SGI | Library:SOI16_NAU7802SGI_NUV | U2 |
| 1 | TCK108AF | TCK108AF:SOT-23-5 | U3 |
| 1 | Terminal_Loadcell | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-4_1x04_P2.54mm_Horizontal | J1 |
| 1 | Terminal_Switch | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J2 |
| 1 | XIAO-nRF52840-SMD | Seeed Studio XIAO Series Library:XIAO-nRF52840-SMD | U1 |
Similar boards
- 2 layers100 × 75 mm
- 2 layers40 × 40 mm
PCB KiCad
Plastic-Scanner/DB2.x-Hardware
Hardware files for the DB2.X (development board) of the Plastic Scanner project
54 parts17CERN-OHL-S-2.0 - 2 layers80 × 127.7 mm
V0 3-Scale Module
MacNite/HiveHub
Open-source ESP32-C6 beehive monitoring hub for scales and sensors. Collects weight, climate, sound, vibration and bee traffic from up to 16 hives, with BLE, OTA, FastAPI/PostgreSQL backend, dashboards, MQTT and tested…
111 parts8MIT - 4 layers94 × 140 mm
- 2 layers60 × 30 mm
Triax loadwing
Scottapotamas/triaxial-loadcell-breakout
Breakout board to sample 3-axis load cells with I2C interface
52 parts4 - 4 layers20.6 × 42.5 mm
RoundScanner
Global-Health-Engineering/plastic-scanner
Especially for small-scale recycling facilities and projects with limited financial resources, commercial plastic scanners are extremly expensive.
79 parts3GPL-3.0 - 4 layers89.3 × 90.7 mm
Breadboard DMM
Acliad/toast-o-meter
Breadboard mounted DMM with volts, amps, ohms, continuity, and diode feature.
152 parts1
Questions
How big is the Espresso hardware PCB?
It measures 62.5 × 81.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Espresso hardware use?
20 parts, built around the NAU7802SGI and TCK108AF,LF. 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 Espresso hardware KiCad files?
From the AndersFrandsen/espresso-hardware repository on GitHub, at the commit this page was made from: the board is hardware.kicad_pcb and its schematic hardware.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Espresso hardware design in my own project?
Its repository states no licence, so its author keeps all rights: ask AndersFrandsen before reusing the design.