Boards using the HTU21D

23 boards

Boards in 17 GitHub repositories, designed in KiCad, that use the HTU21D by TE Connectivity (-40℃~+125℃ 0%RH~100%RH 1.5V~3.6V 450uA 8bit、12bit、14bit Factory calibration、Built-in temperature and humidity compensation、Built-in heater、Derived quantity calculation I2C ±0.3℃ ±2%RH DFN-6-EP(3x3) Temperature and Humidity Sensor ROHS). See how each wires it, with its parts, size, README and files; the HTU21D’s symbol, footprint and pinout are on its own page.

2 layers93 × 42 mm
ADEM
timelab/ADEM
Mobile device for distributed measurements of particulate matter (fine dust)
29 parts13LGPL-3.0
2 layers70 × 40 mm
MoreE u blox E PEAS
ldab/Node-RED-Energy-Harvesting-dashboard
Node-RED Energy Harvesting dashboard example, weather forecast, temperature and humidty measurement. MQTT, ESP32, u-blox NINA-W10, HTU21D, IBM Cloud, CloudMQTT
43 parts11MIT
2 layers50 × 100 mm
OpenWeatherStation MainBoard
VitalSeptfonds/OpenWeatherStation
Open Wheather Station based on STM32
111 parts2MIT
2 layers29 × 57 mm
Teapot
cillian64/teapot
ukhasnet node with temperature, light and humidity sensing
51 parts1
2 layers26.4 × 36.1 mm
Sensof ht
dimhoff/sensof
Si4010 based wireless sensors(temperature, humidity, etc.) firmware and utilities
24 parts1
4 layers55 × 63 mm
Picoballoon
vojt444/picoballoon

97 parts1
2 layers31 × 130 mm
Handheld unit old3
zegarac/Photosynq-hardware
Photosynq KiCad files for the main board and other associated hardware
127 parts1GPL-3.0
2 layers50 × 35 mm
PerpetualClock
CXJ007/LP_Clock
Low-power clock
93 parts
4 layers75 × 84.8 mm
Digital pcb
jrleeman/NSSL_EFM
NSSL EFM Redesign
99 parts
2 layers20.4 × 45.1 mm
WxBackpack
jrleeman/WxBackpack
Backpack board for the Light Blue Bean containing weather sensors.
57 parts
2 layers140.3 × 84.9 mm
Pipernigrum
naufalyafisusanto/pipernigrum-iot
An innovative Internet of Things (IoT) solution for black pepper (Piper nigrum L.) processing that utilizes electric heating elements for faster and more hygienic drying compared to conventional sun-drying methods.
32 parts
2 layers101 × 101.5 mm
Sensor panels
pluyckx/SensorPcb
A repository for the Kicad project of the sensor pcb
316 parts
2 layers100 × 100 mm
PCBpanel
timelab/ADEM-hardware

107 parts
2 layers91 × 75 mm
WeatherDisplay
kevinkessler/WeatherStation-PCB
Schematics and PCBs for the ESP32 Based Weather Station using ESP-NOW.
33 parts3
2 layers23 × 57 mm
Teapot
cillian64/teapot
ukhasnet node with temperature, light and humidity sensing
49 parts1
4 layers43 × 45 mm
Picoballoon
vojt444/picoballoon

88 parts1
4 layers58.4 × 42 mm
Picoballoon OLD
vojt444/picoballoon

87 parts1
2 layers15.2 × 15.2 mm
Version current
oomlout/oomlout_oomp_documentation_bot
a bot that goes around generating rough documentation for kicad projects
14 parts
2 layers49 × 49 mm
Sensor
pluyckx/SensorPcb
A repository for the Kicad project of the sensor pcb
79 parts
2 layers69 × 49 mm
ADEM
timelab/ADEM-hardware

38 parts
2 layers95.8 × 97 mm
FMRadio
WaseemALTamer/EmbeddedControlSystem

56 parts
2 layers135.4 × 56.7 mm
514 sensor pcb
yzhou30-ux/514-FinalProject
This smart refrigerator labeling system integrates multiple individual sensor "tags" with an external magnetic display "hub." The tags automatically monitor and record the time and humidity of stored food items from the…
10 parts
2 layers62.6 × 56.6 mm
514 sensor pcb
yzhou30-ux/514-FinalProject
This smart refrigerator labeling system integrates multiple individual sensor "tags" with an external magnetic display "hub." The tags automatically monitor and record the time and humidity of stored food items from the…
7 parts