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STD Chicken Coop Automation v24.6 - ESP32s2
Chicken Coop Automation v24.6 - ESP32s2
License
Public Domain
License: Public Domain- 0
Update time：
2024-09-30 18:22:55
Creation time：
2024-04-16 12:24:49
Description
Description
Chicken coop door and life support controller. Beta 0.24.6. I'm sharing this as an idea for anyone to build their own.
Code for PlatformIO included. Debugging using native USB on Wemos ESP32-S2 board configured.
3 MCU options to allow for EspNow transmissions:
- Internal socket (for plastic enclosures),
- Side PC-LPT port with ext MCU box (for metal enclosures),
- External 2x13 header with cables and with ext MCU box (for metal enclosures)
Do not use autogenerated BOM since a lot of parts are optional (ESD protection, dual mode, I2C, SPI, future expansion, etc).
Chicken Coop Automation.
This project (see schematic) controls chicken coop door, heat, fan,
battery charge, solar charger and additional relays for future features like feed control, lights, etc.
A 20W solar panel is connected to MPPT mini charger that charges LiFePo4 battery.
The battery already has balancing and protective circuitry built in.
South facing, on T-post is the South_Box sensor module containing 2 LDRs, Override reeds,
reset reed and Neo RGB LED. RGB LED has a lens and faces house. The LDRs
are facing North. MPPT will also regulate ext power supply with FET protection
in case solar isn't sufficient (more than 3 rainy days) or when heat or fan is needed.
Heat or Fan relays will not come on if ext power is not present (assuming
AC not available). Additional 3.3V voltage regulator added for peripherals
Either H-driver or relays (reversing polarity to motor) are used to drive motor
switchable by jumpers and plug. The 4 relay wiring: relay's NC contacts for one direction
as COMMONs for another in case of a software glitch (to avoid all relays at the same
time and causing a short). There is an off/delay time in door operation to allow
motor to completely stop on state changes. Door limit switching done using reeds.
On cold days if temp below freezing (asterisk on LCD) the door will remain closed
and heater relay will come on 24x7. If temp is below comfort (set to 40F) the heat will
come on as well, but only during the night. A fan will be started when temp is
above 86F (settable on top of code) but only during the day if ext power connected.
Battery voltage is monitored - will flash purple "batt" LED on status, see table.
Also, solar and ext Volt values are monitored.
Optional 2 or 4 line LCD with I2C interface can be used to display temperature,
status and light level. Currently set to 2 line, modify lcd lib to adjust
for 4 line LCD. LDRs read light level 0-1023 (higher=darker), range of daylight
as determined from values preset, then state of the last door activity.
OPT: All pertinent data is sent via EspNow to home automation for monitoring.
Board can be reset anytime by holding magnets to both overrides at the same time
for 5s (L and R of South_Box)
* Features
- LCD: show status at glance.
- RGB INDICATOR: flash color codes to determine status of coop from outside.
- ESPNOW: send coop data to monitoring station.
- ESP OTA: hold magnets to both overrides at the same time for 5s (L and R of South_Box)
to reset the board to OTA mode. HOLD until White LED will keep flashing fast,
then go dark, orange and solid white - this is the time to upload new FW OTA.
Once uploaded the board will reset automatically and run new code.
- SOLAR MPPT: 20W solar panel, and/or EXT power brick regulation and batt charging.
- REED SENSING: door up and down door state sensed by reed switches.
- DOOR OVERRIDE: door open/close can be overriden by magnet on reed switch.
- REMOTE RESET: ESP reset by using magnets on bottom of South_Box.
- PWM or RELAY motor driving. Choose plug. Relays 1-2 = OPEN, 3-4 = CLOSE
- MOTOR RETRY: motor will try 3 cycles to close/open door if no feedback from reeds.
- TEMP MONITORING: monitor outside and inside temperatures to determine if
life support (cooling/heating) is needed and controls this via relays.
- LIFE SUPPORT: Heating or Cooling (fan) relays (7-8) can be used when
EXT_PWR brick is connected.
- EXPANSION: Relays 5-6 can be utilized for additional features (feed, water, lights, etc)
- LCD does not show solar volt if ext is plugged in, shows that instead
- HEAT : comes on after Twilight if temp lower than heating temp
: comes on during day if door closed due to frost
* LCD DISPLAY:
-----------------------------
b14.2/e19V+c *HC
i56/o22F 1320^ N
------------------------------
Line 1:
Batt(b) / Ext-Brick(e) voltage, +c || !c (charge_OK or charge_OFF_b/c_frost), * (frost), H || F (heat or fan), C (door status O/C)
Line 2:
Inside(i) / Outside(o) temperatures(F), LDR_value^ToD (D/N/T Day, Night, Twilight)
* See table below for LED flash codes.
----------------------------------------------------------------------------------------------------------
FUNCTION LIGHT/ACTION INDICATES To Do
----------------------------------------------------------------------------------------------------------
STATUS
GREEN: on SOLAR 1 Short Flash Night n/a
2 Short Flashes Evening/Morning n/a
3 Short Flashes Day n/a
BLUE: on CHARGER 1 Short Flash Night n/a
2 Short Flashes Evening/Morning n/a
3 Short Flashes Day n/a
PURPLE: BATT LOW 3 Short Flashes LOW Battery Charge battery before it runs out
WHITE: FREEZE OUT Flashes DOOR remains closed Wait until warmer or override
----------------------------------------------------------------------------------------------------------
DOOR
RED: ALARM 5 Short Flashes Door - Wrong State Check if door open during day or closed at night
GREEN: OP Constant Flashes Motor in Oper n/a
----------------------------------------------------------------------------------------------------------
CHARGE
YELLOW: ERROR 2 Short Flashes Freeze = Charge OFF Too cold for batt charge, charge at home
----------------------------------------------------------------------------------------------------------
SUPPORT
ORANGE: HEAT 1 Long Flash HEAT is ON Works only if EXT PWR connected
TEAL: FAN 1 Long Flash FAN is ON Works only if EXT PWR connected
----------------------------------------------------------------------------------------------------------
POWER
NO_LIGHTS Dark No Power/MCU bad Check Power / MCU
----------------------------------------------------------------------------------------------------------
UPDATES
WHITE: OTA Constant Light Waiting for upload Reset
----------------------------------------------------------------------------------------------------------
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | Manufacturer Part | Manufacturer | Supplier | |
|---|---|---|---|---|---|---|---|---|
| 1 | SMF3.3.TCT tvs | TVS1 | SC-70-5_L2.1-W1.3-P0.65-LS2.1-BL | 1 | SMF3.3.TCT | SEMTECH | LCSC | C117568 |
| 2 | SMF3.3.TCT | TVS2 | SC-70-5_L2.1-W1.3-P0.65-LS2.1-BL | 1 | SMF3.3.TCT | SEMTECH | LCSC | C117568 |
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