Cactus

V1.0

🌵 Measure humidity in kitchen cupboards to keep food fresh 🍶

power LiPO
wireless WiFi
sensor Humidity
mcu ESP8266
ota? No
battery life 1 month
bom items 36
bom cost USD $26.92
vendors 5
status completed in May 2019

Sizes

Item Height Width Depth Weight
Name card holder box enclosure 90 mm 55 mm 25 mm
PCB 76 mm 38 mm 2 mm
WeMos D1 Mini V3.0.0 pcb fit 34.2 mm 25.6 mm 2 mm 3 g
WeMos Battery shield pcb fit 34.2 mm 25.6 mm 2 mm
Adafruit Si7021 Breakout Board pcb fit 17.8 mm 15.3 mm 3 mm 1 g
500mAh LiPo pcb fit 36 mm 29 mm 4.75 mm 10.5 g
500mAh LiPo pcb fit 43 mm 25 mm 8 mm
2000mAh LiPo pcb fit 60 mm 36 mm 7 mm 34 g
2000mAh LiPo 80 mm 70 mm 4 mm
2500mAh LiPo 65 mm 51 mm 8 mm 52 g