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Simple Motor Controller

We are seeking an experienced circuit designer to help design simple circuitry for a low-voltage, battery operated motor driven consumer product. The basic operation is to turn on and rotate the motor in one direction or another based on a light sensor input (and other inputs as specified below). For example, when there is light, turn clockwise, when there is no light, turn counterclockwise.

The deliverable for the base proposal would be a schematic, bill of materials, any code if required, and any other items needed for someone to be able to build a working prototype board. Any add-ons (specified below) should be quoted as a separate line item. We can provide a sample circuit design and BOM.

Please provide a proposal to develop circuitry, schematic and bill of materials to meet the following basic criteria:

• Control a motor (forward or reverse for a set time/revolutions) triggered by a forward/reverse signal from an LDR, remote or a forward/reverse switch (remote would be an optional feature).

• Adjust motor forward/reverse travel range from unit directly or from remote

• Adjust LDR sensitivity

• Remember the last state of the motor for normal operation (i.e. went forward, so at next input needs to go reverse, etc.) and after power failure

• LDR, remote or switch on the unit needs to be able to control an individual unit or a cluster of units (cluster control would be an optional feature). One option would be to set up a “central station” that processes the LDR, remote or switch inputs and transmits to all units

• Each unit powered by battery pack or solar panel/rechargeable battery combination (solar/rechargeable battery would be an optional feature)

• Need low battery indicator

Possible implementation platform

1. Utilize PICAXE as a platform and implement add-ons such as RF, IR, Bluetooth (mentioned in project add-ons below), etc. If you utilize the PICAXE, it would be programmed separately (i.e. the circuitry for programming would not have to be built in)

Key design criteria:

• Use best practices to ensure safety, quality, manufacturability and enable eventual UL/CE/other regulatory approvals if needed

• Keep cost to a minimum and use as many standard, widely used components as possible

• Keep power use to a minimum to maximize battery life and minimize solar panel footprint requirements with solar option

• Motor can be geared, servo or stepper but needs to be able to deliver 15-25 RPM with 30-50 in*oz of torque (these specs are very flexible).

• Size of motor and any other parts should be kept to a minimum possible

Project add-ons:

These are optional features and circuitry design should be quoted separately from main project

1. Cost to develop a proto-board prototype (we would cover the cost of materials)

2. Cost to integrate the device with smartphone using Bluetooth or another method

3. Cost to add feature to synchronize motors when operating multiple units (i.e. cluster) 4. If utilizing a “central station” to control a cluster of units, cost to enable Wi-Fi or

Ethernet connectivity

Thank you for your proposal!

Taidot: sähkötekniikka, Piirilevyn asettelu, tuotesuunnittelu

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About the Employer:
( 0 reviews ) United States

Projektin tunnus: #1706630

15 freelanceria on tarjonnut keskimäärin 487 $ tähän työhön

MikroStar

hi, i am interested in this project.

800 $ USD 50 päivässä
(42 arvostelua)
6.2
MIKY4227

hi please see portfolio working with Altium 10.0

750 $ USD 7 päivässä
(15 arvostelua)
4.9
quang102

hi i can do it thanks

500 $ USD 7 päivässä
(14 arvostelua)
4.8
rigo83cu

We are a professional and multidisciplinary team, we can deliver your work with high quality and using uC technology, simulations and C [url removed, login to view] Regards.

250 $ USD 7 päivässä
(1 arvostelu)
2.1
creonsolutions

Hey, I am an electronic engineering undergraduate from Sri lanka who has very good experience in robotic and remote controllers. See PMB for more details

400 $ USD 20 päivässä
(2 arvostelua)
1.8
nuruzzamansust

I have an experience on motor specially stepper motor controlling system with a minimum parts which are available in our local market.

250 $ USD 7 päivässä
(1 arvostelu)
1.0
jedversion

I can do that..

250 $ USD 10 päivässä
(1 arvostelu)
0.9
ARelectronics

Hello! I can help you. Mine knowledge allow to make it the project

750 $ USD 10 päivässä
(0 arvostelua)
0.0
velanfreelancer

I am a brushless motor and drive designer. I can design a reliable motor controller for your application. I have knowledge in standard motors. I think to design a direct driven servo motor controller for your applic Lisää

250 $ USD 8 päivässä
(0 arvostelua)
0.0
sks83

I have two microcontroller controlled motors servo/dc and i can exactly send forward reverse or even angular commands to the motors, wirelessly using XBee Wi-Fi module. The device is powered by a LiPo battery which get Lisää

250 $ USD 1 päivässä
(0 arvostelua)
0.0
dineshsoniajmer

dear sir my idea on this project is that it is very simply does by intel 8051 microcontroller with a using a cheap opration amplifier lm358 for get the light intencity in the form of electrical enargy then we conver Lisää

400 $ USD 30 päivässä
(0 arvostelua)
0.0
amazingsolution

I can do that.

700 $ USD 20 päivässä
(0 arvostelua)
0.0
madhan2005

The project can be accomplished easily. I hav picAXE and ATMEGA knowledge so the task would be easy for me. Please See PM

700 $ USD 7 päivässä
(0 arvostelua)
0.0
vivek0000

visit [url removed, login to view] the system will RF based using HT12e/d ldr,atmega 8,l293d

450 $ USD 20 päivässä
(0 arvostelua)
0.0
alirazaee

i have worked on motor controller ,its direction control and sensor interfacing like LDR and remotely on off Switch. so i wana use my knowledge in making this project thanks

600 $ USD 20 päivässä
(0 arvostelua)
0.0