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Time Left: Less than 7 days
Fixed Price: $20 - $25   |  Posted: Nov 16, 2015  |  Ends: 4d, 0h  |   2 Proposals
We want i want to design a stepper motor system for my automation machine using nema 17 and A4899 stepper motor driver or any other similar driver and the timing belt used is GT2 timing belt used in conventional mendel prusa v2 3D printer likewise the pulley on the stepper motor should be GT2 Aluminum 20 0r 16 tooth pulley (5mm bore).want the system to be able to move object 50cm forward and likewise backward without the need of feedback mechanism devices..the power design should be included in other to avoid burning up the driver...Secondly you will be sending me the arduino codes for testing and the video and the formula used in calculating the distance covered..Thanks
Category: Mechanical       

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| M****nny
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Nov 15, 2015  |  Ends: 3d, 2h  |   16 Proposals
We are doing a demo for a major tolling agency in the US to test our tolling cell phone app. We want to build a secondary detection method at each toll gantry using device to device technology. We need a prototype build for the test to transmit 200 ft. If the test is successful we plan to roll out nationally.
Category: Other - Engineering &...       

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| m****tfc
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Nov 14, 2015  |  Ends: 1d, 15h  |   7 Proposals
3 prototype frequency generator with MCU and stick on keyboard $25 per unit tested and working 100% to sweep 20 frequency between 0.10 and 10000hz with selectable keyboard then 10 units every 10 days
Category: Contract Manufacturing       

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| d****est
|    United Kingdom
Fixed Price: Less than $500   |  Posted: Oct 29, 2015  |  Ends: 14h, 5m  |   14 Proposals
Hello, we need to fabricate time delay circuit. Please review specifications below and let us know if you can manufacture this timer. If you don't have experience and skills in this project please do not offer other types of circuits, since we do not need them. Only professional job with good solid experience will be considered. No need for wire schematics only, physical prototypes are required. We need 500 pieces as first start order. Projected price is $10-$20 per delay timer in packaging with operating manual. Description: It will be used to turn on ten different appliances in a sequence with 1/4, 1/2, 3/4, 1.0 or 1.5 second time delay. Specifications are following: 1. Has 10 individual channel lines for connecting appliance wires. Each channel will feed an appliance with hot 70-120VAC. 2. First 1-5 channels can be delayed for one of five different time increments: 1/4 sec, 1/2 sec, 3/4 sec, 1 sec and 1.5 sec. Second 6-10 channels can be set differently for another one of five d...
Category: Electrical       

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| s****hat
|    United States
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