18 Solenoid Output Control Circuit By 6 RF Transmitters

Closed

i need a control system with the following guidelines. i need the winner of the bid to keep in mind cost effectiveness in design, build, and component cost.

the main idea is to control 18 solenoid valves by means of 6 RF transmitters.

- power input is from a 12vdc 10 amp psu

- solenoid valves are rated at 12vdc 1.4 amps

- i want to use cost effective FET's or similar to control the valves. (no relays wanted)

- the solenoids produce a lot of heat at 1.4 amps so i would like to PWM control them, they are to be soldered to the pcb for cooling instead of heatsinks

- at any point of given time there will always only be a maximum of 6 valves on at a time

- each 3 valves are grouped to be controlled by a single momentary push button RF transmitter which is detailed below

- each time the button on the transmitter is pressed a valves in the corresponding group will be turn on, so press it once, A turns on, press it again, A turns off and B turns on, press it again and B turns off and C turns on, press it again, C turns off, press it again, A turns on and the cycle continues

- i need the ability to operate multiple of these system in the same room

- 18 2 position terminal blocks for each valve (-/+ for each valve)

- 1 2 position terminal block for the power input

- temperature sensing and output control for a fan. i don't have a fan picked out yet so i need it designed in a generic way. ill probably use some sort of 12 or 5 volt computer case time fan.

- the transmitter is to have to use the following components

- CR2032 coin battery, with a selected battery clip that i have

- SMD push button

- ATTiny24a-ssu for the logic

- maximum of 1" by 1.5" PCB board size

- RFM23B-868-D as the transmitters

- a single RFM23B-868-D as a receiver for the main control board

(i have schematics already, i just need your thoughts or suggestions and pcb layout done)

Firmware and MCU

- a main atmel microcontroller to handle everything, needs to big enough to handle all the input lines for the RF module, and enough output lines for the valves, i don't want to use any shifts, i'm trying to keep the BOM down as much as possible.

- handle decoding the RF inputs and PWM'ing the 18 valve outputs.

- when there is no activity for 2 hours, disable all valve outputs

- if a set temperature is reached, turn the fan output on, if the fan does its job and set internal temperature is reached again then turn the fan output off, if the fan does not do its job and internal set temperature is exceeded then shut down all valve outputs until another set temperature is reached again. this is as a safety procession

- firmware written for the transmitters

- components must be easily obtain from [url removed, login to view] with source sustainability in mind

- SMD is not a must nor is through hole, the idea is to just keep the cost down and make it work, but also keeping in mind easy components for easy of assembly

project milestones will based on you supplying me with schematics, pcb layout, firmware and my confirmation in steps that we can discuss

PLEASE READ ALL REQUIREMENTS CAREFULLY, I NEED SOMEONE PROFICIENT AND COMFORTABLE WILL EVERY ASPECT AND FEATURE OF THE PROJECT

if you have any further questions please feel free to ask, however i tried to cover most of the important requirements, other than that im very flexible and open to design and routes to take

Skills: Electrical Engineering, Embedded Software, Microcontroller, PCB Layout, Wireless

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Project ID: #4393073

19 freelancers are bidding on average $716 for this job

MikroStar

hi, i am an electrical engineer and an embedded system designer. i can help you with this project.

$3500 USD in 65 days
(42 Reviews)
6.3
MIKY4227

Hi i can help you, see portfolio for samples of works

$525 USD in 10 days
(19 Reviews)
5.1
betaenergy

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

$200 USD in 3 days
(14 Reviews)
4.7
yhaat

Hi, I can do this job.

$500 USD in 15 days
(10 Reviews)
4.6
theenggprojects

I am ready to start the job .....

$500 USD in 20 days
(10 Reviews)
4.2
shahbaz1980

Hi check PMB

$500 USD in 30 days
(6 Reviews)
3.3
GlobalElectronic

Professional PCB designer offer you professional help.

$177 USD in 1 day
(1 Review)
2.7
RightAndAbove

We can help, please see PM.

$4290 USD in 60 days
(1 Review)
2.2
noumanmehtab86

i can help.

$400 USD in 3 days
(2 Reviews)
1.8
DamithaKD

Read Pm sir :)

$275 USD in 3 days
(1 Review)
1.8
ammiran

I can help you.

$150 USD in 3 days
(1 Review)
1.2
VinayakSJ70423

Hi, I have 3 years of experience working with Atmel controllers. I have worked with a lot of rc-servo based robot systems, so PWM control is a question of least worry. Also i have designed several wireless systems usin More

$300 USD in 20 days
(0 Reviews)
0.0
javier1788

I did proyect like this. See my portfolio and check the PM.

$450 USD in 20 days
(0 Reviews)
0.0
embfocus

we are a embedded technology consulting providing solutions in industrial automation,power and automotive electronics.

$374 USD in 30 days
(0 Reviews)
0.0
prathvishkumar

Dear sir, We can work on your project as per project discription using atmel microcontrollers with all necessary components along with source code,hex code and hardware schematic for project thank you

$200 USD in 14 days
(0 Reviews)
0.0
ganeshkumarsw

Hi Check your pm..

$220 USD in 7 days
(0 Reviews)
1.6
hadded

i m computer engineer and done a lots projects like this,,

$200 USD in 7 days
(0 Reviews)
0.0
rahulranjan949

Lets start the work

$250 USD in 30 days
(0 Reviews)
0.0
plus20db

I would integrate some off the shelf transmitter dongles with some custom electronics. I've designed solenoid PWM driver circuits in the past, and would integrate on a PCB with receiver IC and antenna.

$247 USD in 15 days
(0 Reviews)
0.0
trosich

Hi, it's SHARENG, an electronics design team in Spain. I's able to make it.

$550 USD in 30 days
(0 Reviews)
0.0