2 layers54.5 × 28 mm
BLE environmental sensor
atuleu/aristeus
Yet another Open Source Hardware Apiary project for monitoring bees.
30 partsCERN-OHL-S-2.0
2 layers57.4 × 12 mm
Zicada
CoretechR/Zicada205DIY Zigbee Multisensor
- Size
- 57.4 × 12 mm
- Copper layers
- 2
- Thickness
- 1.57 mm
- Parts
- 60
- Nets
- 79
- Pads
- 212
- Tracks, vias
- 482, 82
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Nov 2025
- Updated
- 19 Jul 2026
Overview
Zicada is an open-source printed circuit board by CoretechR, from the CoretechR/Zicada repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 57.4 × 12 mm with 60 parts on 79 nets, routed with 482 tracks and 82 vias.
It is built around the TPS610981DSE, OPT3001 and SM351LT. Its parts include 24 capacitors, 8 resistors, 5 ICs, 3 connectors and 2 diodes. It belongs with the radio and wireless boards and the nRF52 and nRF5x boards of this library.
Main components
3
TPS610981DSE
WSON-6(1.5x1.5)-40℃~+85℃@(TA) 2 2uA 4.3V 700mV~4.5V Boost Boost Built-in Yes WSON-6(1.5x1.5) DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersOPT3001
DFN-6(2x2)DFN-6(2x2) New Arrivals ROHSEverlight ElectronicsUncategorised
SM351LT
SOT-23-40℃~+85℃ 1.65V~5.5V 360nA 5Gs 7Gs Omnipolar Push-pull SOT-23 Hall Switches ROHSHoneywellHall Switches
README
README.mdZicada - DIY Zigbee Multisensor
Overview
Zicada is a DIY Zigbee sensor based on Nordic’s nRF52840 SoC. It combines a temperature and humidity sensor with a hall effect switch, making it suitable for both climate and door/window monitoring. Zicada is optimized for ultra-low power consumption, running at just 6µW in standby. This allows it to operate on a rechargeable AAA battery for 2 years or longer. It is fully compatible with Home Assistant (ZHA) and Zigbee2MQTT.
Features
- Temperature, humidity and contact sensing
- Zigbee 3.0 end device
- Compatible with Home Assistant (ZHA) and Zigbee2MQTT
- Ultra-low power consumption (6µW in Standby)
- 2+ years of battery life
- Supports AAA cells from 0.9V to 1.5V
- Small sized (62 x 15 mm) and fully 3D-printed case
Setup Instructions
Follow these instructions to download and install the nRF Connect SDK version 2.6.0: https://docs.nordicsemi.com/bundle/ncs-2.6.3/page/nrf/installation/install_ncs.html Copy Zicada firmware folder into the directory ncs/projects.
When using the contact sensor with Zigbee2MQTT, copy the file "zicada_converter.js" to the directory data/external_converters/ of you Z2M install.
Parts
60| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0603_1608Metric | C10, C13, C14, C16, C19, C20, C21, C22, C24 |
| 5 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5 |
| 4 | 12pF | Capacitor_SMD:C_0603_1608Metric | C5, C6, C15, C17 |
| 4 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4 |
| 2 | 0R | Resistor_SMD:R_0603_1608Metric | R1, R7 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C18, C23 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C12 |
| 2 | 330R | Resistor_SMD:R_0603_1608Metric | R2, R8 |
| 2 | Conn_01x01_Pin | zicadaLib:MYOUNG MY-AAA-07 | J2, J3 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 2 | N.C. | Capacitor_SMD:C_0603_1608Metric | C1, C4 |
| 1 | 0.5pF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 0.8pF | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_MicroCrystal_CC7V-T1A-2Pin_3.2x1.5mm | Y2 |
| 1 | 32MHz | Crystal:Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y1 |
| 1 | 350mA | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | 4.7nH | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 4.7uH | Inductor_SMD:L_1008_2520Metric | L2 |
| 1 | 402R | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 820pF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J1 |
| 1 | G*** | kibuzzard-6898F105 | kibuzzard-6898F105 |
| 1 | G*** | kibuzzard-6898F6DD | kibuzzard-6898F6DD |
| 1 | G*** | kibuzzard-6898F1CE | kibuzzard-6898F1CE |
| 1 | HDC2080 | Package_SON:Texas_PWSON-N6 | U2 |
| 1 | OPT3001 | zicadaLib:USON-6-1EP_2x2mm_P0.65mm_EP0.65x1.35mm | U5 |
| 1 | SM351LT | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW1 |
| 1 | TPS610981 | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U4 |
| 1 | nRF52840 | Package_DFN_QFN:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
Questions
How big is the Zicada PCB?
It measures 57.4 × 12 mm and has 2 copper layers, 1.57 mm thick.
What parts does the Zicada use?
60 parts, built around the TPS610981DSE, OPT3001 and SM351LT. 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 Zicada KiCad files?
From the CoretechR/Zicada repository on GitHub, at the commit this page was made from: the board is PCB/Zicada Board/Zicada.kicad_pcb and its schematic PCB/Zicada Board/Zicada.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Zicada design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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