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Circuit design - low power stepper motor solution

Require a circuit designed for existing code that drives a stepper motor when buttons are pushed. I'm looking for a schematic as well as assistance in selecting a proper stepper driver and likely a boost converter. I would breadboard the circuit and test, i expect the process will require multiple iterations. I'm OK with purchasing multiple components for testing.

I expect the active components will be attiny43u, stepper driver and regulator/boost converter.

Stepper driver/circuity should be able to sleep - use minimal power when not active. I don't want to use a shield, would like stepper circuity to be able to be reproduced for a production pcb. I'd like to use a minimum amount of hardware. Do not require microstepping.

Circuit will be driving either a 3V 1A or [url removed, login to view] 800ma stepper. Prefer using the first, but will depend on how much torque can get out of the circuit. The stepper will not be active often - only spinning about 15 seconds a day on average. Stepper is not energized when not moving. Goal is 6 months battery life assuming very low power from the attiny when not in use.

Would ideally like to be able to drive all off of 2 AA alkaline batteries but I think current may be an issue. Options in order of preference are:

2AA alkaline

2AA lithium

3AA alkaline

3AA lithium

I have no hard requirements for power usage during sleep, but it seems like some stepper drivers are 20uA in sleep mode, and attiny43u uses hardly anything - so 20-30uA should be very possible.

Compétences : Design de circuits, Génie Électrique, Electronique

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Concernant l'employeur :
( 101 commentaires ) norwalk, United States

N° du projet : #14672040

Décerné à :


How r u?bro,,,its me imad,,i have completed about 200+ projects on arduino,matlab,circuit designing and .net ..u will find brotherhood. Relevant Skills and Experience circuit designing Arduino matlab .NET visual basic Plus

30 $ USD en 3 jours
(8 Commentaires)

23 freelance ont fait une offre moyenne de 189 $ pour ce travail


Hi I am an expert electronics engineer with more than 8 years of experience . I have read the details and I would like to work on this project. Please review my profile to see feedback from my previous employers. I Plus

250 $ USD en 3 jours
(178 Commentaires)
250 $ USD en 3 jours
(144 Commentaires)

Hi there, We will do bread board testing as required. Relevant Skills and Experience We are a company offering design and prototyping services. Feel free to contact us. Shahbaz. Proposed Milestones $125 USD - Schema Plus

250 $ USD en 15 jours
(39 Commentaires)
100 $ USD en 3 jours
(19 Commentaires)

Hello, I am Anthony from Sri Lanka and I am a FULL time freelancer. So this is basically my job and I dont mess with it. I have multiple degrees in Electronic and Mechanical Engineering. Relevant Skills Plus

222 $ USD en 3 jours
(38 Commentaires)

I am an expert with more than 15 years of experience in embedded systems, prototyping and low power applications. I would provide you the best working schematics and firmware for low power design. Relevant Skills and Plus

200 $ USD en 3 jours
(27 Commentaires)
250 $ USD en 3 jours
(18 Commentaires)

. . Relevant Skills and Experience . Proposed Milestones $60 USD - Code for Attiny $60 USD - Debug stage with client is done

120 $ USD en 10 jours
(17 Commentaires)
555 $ USD en 3 jours
(17 Commentaires)

hi, can you test and confirm with a 3V supply if you're getting desired torque? then we ll decide whether to have booster. Which driver did you check for 20ua standby? we might have to switch off driver as well. How ma Plus

222 $ USD en 14 jours
(9 Commentaires)

We are 10 Members team with 8+ years of experience. Specialized in all sorts of Electrical and Electronics Automation. We design and Build Products in most efficient possible manner Our Services: * LabVIEW an Plus

222 $ USD en 3 jours
(1 Commentaire)

Hi I'm an expert. If you hire me, i won't let you down. I can provide you all these things with unlimited revisions till the satisfactorily completion of [url removed, login to view] you

166 $ USD en 5 jours
(1 Commentaire)

I have 20 year experience on electronic design, harware design, analog design, power electronics,PCB design and microcontroller coding Relevant Skills and Experience -power electronics -analog design -hardware design Plus

111 $ USD en 3 jours
(1 Commentaire)

A proposal has not yet been provided

165 $ USD en 3 jours
(0 Commentaires)

Hi , I can design the circuit and show you its working prototype as well . Relevant Skills and Experience Hardware Design , PCB Design , PIC based Embedded Systems design Proposed Milestones $11 USD - Initial Fee $10 Plus

211 $ USD en 3 jours
(0 Commentaires)

Hi, I'd like to have your project and it is suitable for my skills and where I like to work. I think i will be able to deliver my maximum on this. Thank you. Relevant Skills and Experience ATMel, ATTIny PIC micro con Plus

55 $ USD en 3 jours
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As per description, Push button(s) will be provided for directional control. AVR controllers will be most preferred. Rest all as per description. Relevant Skills and Experience Yes, we are new to freelancer with an ex Plus

277 $ USD en 10 jours
(0 Commentaires)

I've used attiny, power circuits for a project similar to this, I'll be able to help you make the circuit, test it and make it production ready

66 $ USD en 7 jours
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i am an electrical engineer and also work so many like this project i will complete this project inn 3 days.i will used multisim and diptrace to complete this work Relevant Skills and Experience electrical engineering Plus

111 $ USD en 3 jours
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Hi I am electronics engineer let me know the details please I will create the design according to your requirements

30 $ USD en 5 jours
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