Solar powered soil moisture indicator

4 months ago 113
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

This board uses a supercapacitor rated at 5.5V which is intended to be charged by a solar cell rated at 6V. The moisture sensing is done by one of the cheap capacitive sensors. The ATtiny85 microcontroller firmware reads the moisture sensor every 30 seconds and blinks the LED if the measured value is over a threshold. The button is used to program the threshold.

Documents

Sheet_1

PCB

PCB2

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Manufacturer Part BOM_Supplier BOM_Supplier Part BOM_Manufacturer
1 ATtiny85-20PU ATTINY85 DIP8 1
2 220 R1 RD-3.2X1.8-1/8W 1 MF1/8W ±1% 220Ω STB5 LCSC C337135 FlyWin
3 F185-1102A1BSYA1 SOLAR H2-2.54 1 F185-1102A1BSYA1
4 1N4007 D1 DO-41 1 1N4007 LCSC C2457 MDD
5 1uF C1 CAP-0.2 1 CD1H105MC9BEF4E000 LCSC C263189 Dersonic
6 ICSP ICSP HEADER_PRG_2X03 1
7 K2-1102DP-C4SW-04 SW1 DIP-6*6*7.5 1 K2-1102DP-C4SW-04 LCSC C110153 HRO
8 DY-333UYD/SN-A3(EL) LED1 LED-TH_2PIN-L5.60-W6.20-PITCH2.54-L 1 DY-333UYD/SN-A3(EL) LCSC C396994 TONYU
9 SUPERCAP 5.5V 4F CBAT SUPERCAP 5.5V 4F 1
10 PAD100-RND PWM,SENSE PAD-100-RND 2

Attachments

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Members

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