2 layers90.5 × 84.4 mm
Demo badge-2023
aws-samples/aws-iot-connected-product-demo-badge
This device was designed and created for a hands-on workshop at re:Invent 2023.
122 parts13MIT-0
2 layers57 × 57 mm
Mold detect
christopher-besch/mold_detect4Warn residents of mold-friendly atmosphere and log opened windows.
- Size
- 57 × 57 mm
- Copper layers
- 2
- Thickness
- 1.67 mm
- Parts
- 46
- Nets
- 49
- Pads
- 170
- Tracks, vias
- 314, 22
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Jan 2024
- Updated
- 25 Dec 2025
Overview
Mold detect is an open-source printed circuit board by christopher-besch, from the christopher-besch/mold_detect repository on GitHub, published under the MIT licence. It is a 2-layer board of 57 × 57 mm with 46 parts on 49 nets, routed with 314 tracks and 22 vias.
It is built around the ATMEGA328P-PU, TPL5010EVM and FT230XS-R, with the SHT30-DIS and W25Q128JVSIQ among its other parts. Its parts include 13 resistors, 12 capacitors, 5 ICs, 2 diodes and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
TPL5010EVM
-ModulesTexas Instruments
FT230XS-R
SSOP-16-150mil-40℃~+85℃ 125uA 3.3V~5V 8mA USB 2.0 USB to UART SSOP-16-150mil USB Converters ROHSFTDIUSB Converters
SHT30-DIS
DFN-8DFN-8 Temperature and Humidity Sensor ROHSSensirionUncategorised
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
README
README.mdmold_detect
Warn residents of mold-friendly atmosphere and log opened windows.
This project is being developed in AVR_C on an Atmega328p. It provides:
- Temperature, Humidity Logging (every minute with flash storage for two years)
- LED warning to motivate the opening of windows or turnign on of heaters
- Serial terminal via USB-C
- ~5uA power consumption at 3V battery power
The PCB is designed in KiCad and manufactured by Aisler.
Parts
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C5, C10, C11, C12 |
| 4 | 100R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R12, R13 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R8, R9 |
| 4 | LED | LED_THT:LED_D3.0mm | Blue1, Green1, Red1, Red2 |
| 4 | ~ | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C7 |
| 2 | 27R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
| 2 | 47pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3 |
| 2 | D_Schottky | Diode_SMD:D_SOD-323_HandSoldering | D1, D2 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 16MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 2 AAA Batteries | Battery:BatteryHolder_Keystone_2468_2xAAA | BT1 |
| 1 | 22k021 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 4u7 | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U3 |
| 1 | FT230XS | Package_SO:SSOP-16_3.9x4.9mm_P0.635mm | U2 |
| 1 | ISP | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J2 |
| 1 | LOGO | Library:kit_logo | G*** |
| 1 | SHT30-DIS | Sensor_Humidity:Sensirion_DFN-8-1EP_2.5x2.5mm_P0.5mm_EP1.1x1.7mm | U4 |
| 1 | TPL5010 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U5 |
| 1 | ~ | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | FB1 |
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Questions
How big is the Mold detect PCB?
It measures 57 × 57 mm and has 2 copper layers, 1.67 mm thick.
What parts does the Mold detect use?
46 parts, built around the ATMEGA328P-PU, TPL5010EVM, FT230XS-R and SHT30-DIS. 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 Mold detect KiCad files?
From the christopher-besch/mold_detect repository on GitHub, at the commit this page was made from: the board is mold_detect.kicad_pcb and its schematic mold_detect.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mold detect design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).