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Analog or low frequency digital chicken coop door controller

$30-250 USD

In Progress
Posted almost 5 years ago

$30-250 USD

Paid on delivery
I need a circuit and a PCB developed for the following project: This is going to be a very simple chicken coop door controller with nothing but the essential features. The circuit must not have anything oscillating at over 9kHz to be exempt from FCC testing requirements. Clarification: Nothing should be working on frequencies over 9kHz in the circuit. Components that are capable to work at frequencies over 9kHz are ok. The circuit is powered from a 12v battery or a 12v power supply. DC motor (under 1 amp) opens and closes the door, so it needs to rotate in both directions, depending on the light level. Two limit switches to stop power to the motor when the coop door is all the way up or all the way down. The logic is as follows: When ambient lightning has reached a certain limit (at the time of sunrise), the motor is energized and opens the door. At sunset, When ambient lightning again has reached a certain limit , the motor is energized in the opposite direction and closes the door. Please include a hysteresis loop to prevent the circuit from turning the motor on and off repeatedly when the light levels are around the trigger levels Motor should be energized for 30-90 seconds (adjustable by a pot or by replacing time delay components), after which there is no power to motor regardless of limit switches. Temp range -25C +45C, LDR output should not deviate more than 5% within the temp range at low light (dusk/dawn). No screen. Light level sensitivity adjustment is made by a pot. 2 buttons on board for opening and closing the door (overriding the door position until next open or close) unless this is hard to implement. The circuit should draw <=1ma when idle. 5.5x21mm 12v jack, a small terminal block for motor. LDR mounting should have 2 options: on board and a pluggable terminal block for remote LDR installation.
Project ID: 19239856

About the project

6 proposals
Remote project
Active 5 yrs ago

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Hello, My name is Andrei, i am a Romanian IOT Developer with a lot of experience in IOT projects and automatics . To make it analogical is nice , but the cost will be high, is more simple to make it with a MCU with internal Clock , and h bridges . I can develop you both with Build of materials from Element 14 or china . I am not cheap , but i deliver the best quality, clean code and design . I can work with all types of Microcontroles programming in C , C++ , Mikro C , CCS C , Atmel Studio , Arduino , gcc . Creating Schematics and PCB in Kicad , Eagle , EasyEDA and Proteus (+simulation). i have an workshop full of parts and the infrastructure to build PCB and test the solution end to end using special tools (Spectrum analyzers , oscilloscope , logic analyzers ) Derivable on the project : Wiring diagram for prof of concept . Schematic design PCB Design Gerber files for manufacturing MCU code explained every line . As an additional service i can make you a full working prototype and ship to you. Regards, Andrei
$140 USD in 7 days
5.0 (23 reviews)
4.4
4.4
6 freelancers are bidding on average $244 USD for this job
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Hi there, I have read your project description and i'm confident i can do this project for you perfectly.I still have a few questions. please leave a message on my chat so we can discuss the budget and deadline of the project. Thanks . .
$555 USD in 4 days
4.9 (23 reviews)
6.5
6.5
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Hi. I'm an electronic engineering student from Argentina. I've been working in freelancer.com for more than two years, and I've completed more than a dozen projects, all with good recommendations, you can check my profile. You will get from me the best effort to deliver a project that is up to your expectations and receive a good rate from your part. Please, if you have any questions, feel free to ask me! Regards, Esteban.
$250 USD in 15 days
4.8 (16 reviews)
4.2
4.2
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I DO NOT OUTSOURCE I have been a freelancer for the past 8 years, I believe that my experience and skill in this background will prove to be of great help to you. Contact me to discuss more on the details
$250 USD in 3 days
4.2 (8 reviews)
4.3
4.3
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Hello there, This is a default bid made. we'll discuss the price later in the chat after reading your project i can do this for you perfectly.I still have a few questions. please leave a message on my chat so we can discuss this further.. Thanks . .
$155 USD in 3 days
5.0 (2 reviews)
3.2
3.2
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I'm an engineer in Instrumentation and Control. Expert in the subject and with experience. Manager of SOLUXPRO C.A I promise to be with you from the beginning until after finishing the work. Service to your needs Contact me.
$111 USD in 10 days
4.0 (1 review)
0.5
0.5

About the client

Flag of UNITED STATES
Nashville, United States
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Member since Apr 13, 2019

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