Archive: Automating Hydroponic Grow Tunnel
Budget
500$
per month
Posted: 5 years ago
Closed
- Description
- Good day Alexander,
I was wondering if you could possibly help with this project. I have an hydroponic grow tunnel, that I would like to automate using a raspberry pi and compatible hardware components .
The systems should be fully automated , only the planting and harvesting of the crops will be done manually.
Below is a description of what I have in mind, but I'm open for suggestions:
1) System Boots up , display logo on LCD
2) Prompt user for the following values
- Water reservoir volume ( Litres) only fill reservoir to 90% of volume
- PH Range for crops you will grow
- EC Level for crops
-
3) Display “START” when all values entered
4) Start Sequence
-Activate main water feed Flow Meter ( Display on LCD)
-Open main water feed Electro-Valve
-Close main water feed Electro-Valve ( when reservoir volume is reached) (data needs to be recorder)
-Exit flow valve reading on LCD after 15 seconds ( when reservoir volume is reached)
-Activate Water Level Censor and calibrate (Display volume in % on LCD )
-Activate atmospheric Thermo and Humidity Censor ( Display on LCD)
- Activate Water Temp/PH/EC probes ( Display readings on LCD)
-Wait 15 minutes
-If dozing is required according to PH/EC data
-Activate Dozing flow meters
-Activate PH/EC dozing PUPMS/Electrpo-Valves (data needs to be recorder)
-OPEN main PUMP bypass valve
-START main Pump/STOP after 15 minutes
-Repeat dozing process if required, until desired PH and EC levels are reached
-Close bypass Electro-valve
5) Activate main line flow meter (display on LCS –Flow Rate L/min)
6) OPEN main line Electro- valve
7) Start main pump
8) Activate SUMP reservoir water level censor and calibrate (Display volume in % on LCD )
9) Activate SUMP pump Flow Meter ( Display flow rate L/min on LCD)
10) When EC (salt levels) become too high, a TOPUP sequence needs to be activated (SET VALUE in maintenance mode)
a) Switch off main pump
b) Close main pump valve
c) Pump all remaining water in system & sump to the main water tank
d) Switch OFF sump pump
e) Open drainage valve and drain main water tank to 70% level, close drainage valve
f) activate main water supply flow meter
g) Open main water supply Electro-valve, fill main tank to 100%, close valve
h) Run Dozing programme if needed / Activate START sequence
ALERTS:
Alert when Main or SUMP pump flow meters show 0 reading when system is fully operational
Alert when any of the censors show 0 value
When main water tank levels go above 100% or below 20%
Working conditions:
Fixed Price
$250-$500
Skills:
system automation,rasberry pi,system logic
- Category
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