Automatische Gartenbewässerung / garden irrigation system

10 months ago 208
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In my project, I operate the circuit board via solar / battery, i.e. autonomously. The following components that I still used.

Current informations

  • I'am waiting for the V1.3 board to test my last changes. If all fine, i write it here in the description.


V1.3 (red circuit board color)

  • New layout on the same board dimensions
  • Added 10k resistors to eliminate a short HIGH signal when ESP (re)boot
  • Added diodes to protect against coils self-induction

V1.2 (black circuit board color)

  • more a software change
  • was never produced, but was theoretically used for further development

V1.1 (white circuit board color)

  • Change many elements to SMD (smaller board)
  • Power supply changed from 3.7V LiPo to 12V lead (to high current for TP4056)
  • fixed a problem with incorrectly connected temperature sensor
  • fixed a problem with incorrectly calculated voltage dividers

V1.0 (green circuit board color)

  • First circuit board with through hole Elements
  • Since water valves have to be controlled with a pulsed signal, the railes were exchanged for Mosfet circuit

First ideas

  • First draft on a breadboard with a relay as a switch for water valves
  • Power supply with 3.7V LiPo via TP4056 and a 5V solar panel



Hauptplatine V1.3



ID Name Designator Footprint Quantity
1 10uF C1 C1206 1
2 100nF C2 C1206 1
3 2.2uF C3 C1210 1
4 100nF C4 C1210 1
5 WJ127-5.0-6P CN1 CONN-TH_6P-P5.00_WJ127-5.0-6P 1
6 1N4007_C727081 D5,D6,D7,D8 SMA_L4.4-W2.8-LS5.4-RD 4
7 FTDI Adapter J2 HDR-M-2.54_1X6 1
8 WJ126V-5.0-2P P1 CONN-TH_WJ126V-5.0-2P 1
9 ZVN4206A Q1,Q2,Q3,Q4 TO-92-3_L4.9-W3.7-P1.27-L 4
10 1M R1,R2,R3,R4 R1206 4
11 4.7K R5 R1206 1
12 13K R6 R1206 1
13 180K R7 R1206 1
14 100 R8,R9,R10,R11 R1206 4
15 300 R12,R13,R14,R15 R1206 4
16 47K R16 R1206 1
17 7.5K R17 R1206 1
18 10K R19,R20,R21,R22 R1206 4
19 B3F-1000 SW1,SW2 KEY-TH_4P-L6.2-W6.2-P4.50-LS6.5 2
20 LTV-847S U1 SMD-16_L20.0-W6.5-P2.54-LS10.2-BL 1
22 U3V50F24 U4 U3V50AHV-ALL-HOLES 1
23 DS18B20 U6 TO-92-3_L4.9-W3.7-P1.27-L 1
24 LF33ABDT-TR U8 TO-252-2_L6.6-W6.1-P4.57-LS9.9-TL-CW 1


The owner does not allow comments in this project now

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