uncleflo
Registered since September 28th, 2017
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qiskit.org - Open-Source Quantum Development
Saved by uncleflo on September 6th, 2022.
Qiskit [kiss-kit] is an open-source SDK for working with quantum computers at the level of pulses, circuits, and application modules. When you are looking to start Qiskit, you have two options. You can start Qiskit locally, which is much more secure and private, or you get started with Jupyter Notebooks hosted in IBM Quantum Lab. Qiskit includes a comprehensive set of quantum gates and a variety of pre-built circuits so users at all levels can use Qiskit for research and application development. The transpiler translates Qiskit code into an optimized circuit using a backend’s native gate set, allowing users to program for any quantum processor or processor architecture with minimal inputs.
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HV 120V 500A brushless controller and 120100 Outrunner Brushless Motor ESC for RC UAV/ Airplane/Paramotor-in Parts & Accessories from Toys & Hobbies on AliExpress
Saved by uncleflo on December 22nd, 2019.
HV 120V 500A brushless controller and 120100 Outrunner Brushless Motor ESC for RC UAV/ Airplane/Paramotor. ESC Features: The firmware is upgraded recently. Two way communication while connecting it with computer. Firmware can be upgraded by user. Motor cable can be inspected while Connecting the power battery. Simply set function value by Prog-Box or by PC via USB link wire. Li-MH/Li-Po,Ne-Cd/Ne-mH,LiFe battery can be use. Enables setting the voltage per cell for the point at which the controller’s cut off circuitry engages.Li-MH/Li-Po from 2.0-3.6V,Ne-Cd/Ne-.4-1.0V,LiFe from2.2-2.8V. Reverse function. the delay time of reverse is adjustable. The power of the motor forward/ reverse can be set. Automatically detection the throttle route or can be set a fixed number by manual operation. Auto cut off the power within 3 seconds if no radio signs. Timing setting may be adjusted (0°-30°) to suit the motor type.
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50KW 154120 brushless motor and HV 120V 1000A brushless controller for RC UAV/ Airplane/Paramotor-in Parts & Accessories from Toys & Hobbies on AliExpress
Saved by uncleflo on December 22nd, 2019.
50KW 154120 brushless motor and HV 120V 1000A brushless controller for RC UAV/ Airplane/Paramotor; The firmware is upgraded recently; Two way communication while connecting it with computer; Firmware can be upgraded by user; Motor cable can be inspected while Connecting the power battery; Simply set function value by Prog-Box or by PC via USB link wire; Li-MH/Li-Po,Ne-Cd/Ne-mH,LiFe battery can be use; Enables setting the voltage per cell for the point at which the controller’s cut off circuitry engages.Li-MH/Li-Po from 2.0-3.6V,Ne-Cd/Ne-.4-1.0V,LiFe from2.2-2.8V; Reverse function. the delay time of reverse is adjustable; Automatically detection the throttle route or can be set a fixed number by manual operation; Auto cut off the power within 3 seconds if no radio signs; Timing setting may be adjusted (0°-30°) to suit the motor type.
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Battery suitable for DJI Phantom 4 Pro - 5870 mAh battery (White) - BatteryUpgrade
Saved by uncleflo on December 19th, 2019.
This new generation of DJI Phantom 4 Pro battery has been developed to get the most out of your drone. The battery has a high capacity (5870 mAh) and indicates its current capacity with LED lights. Just like the original battery, the battery lets the receiver know when it's almost empty. The battery is also protected against short circuit and overload by the internal protective circuit. Our price: £ 85.49
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Choosing the Right Switch: Know Your AC from Your DC
Saved by uncleflo on December 18th, 2019.
When picking a switch to use in electrical design, many people believe they can use any switch, provided its current rating is more than the maximum load in the circuit. This, of course, isn’t true. Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1. This is why it’s so important for designers and engineers to understand how to pick the right switch for their product.
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Flying sailboats designed by SEAir - Mini Transat
Saved by uncleflo on October 28th, 2019.
In early 2017, the Mini 747 prototype was the first and is still the only offshore racing monohull that can stay steadily airborne. At 8 knots of wind, only the foils touch the water, which means that it can reach higher speeds in certain points of sailing than those of water displacing sailing yachts twice its size. Up until now the boat showcased SEAir’s expertise and our technological development laboratory, but we are now getting it ready to return to racing. It will race in the events of the Mini circuit, including the well-known single-handed Mini Transat, blazing the trail of foiling monohulls crossing the Atlantic in record time. Having gained experience on the 747, SEAir is now in a position to design the elder sisters of this forerunner, destined to beat records and take part in the top open, single-handed, rating or crewed races. Currently only sailing on certain circuits, foiling boats will naturally continue their ascension and end up sailing in all racing programmes.
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PDF - Four or more layer PCB design for beginners using EAGLE
Saved by uncleflo on June 23rd, 2019.
With microcontrollers and other Integrated Circuit (IC)’s getting smaller and smaller Printed Circuit Board (PCB) design gets more and more difficult. 2 layer PCB design is getting common for small companies and hobbyists but 4 layer or more is a bit daring for those used to 2 layers. When designing a circuit with a Ball Grid Array (BGA) that has 100 or more pins a 4 layer circuit board is necessary, but more layers can make designing easier. With prices of 4 layer boards getting lower it can be a better idea to route a board thats hard to do in 2 layers in 4 layers as it can save a lot of time. This document will explain the basics of routing PCBs with 4 or more layers with Cadsoft Eagle.
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L298 Dual Full Bridge Driver - Electronics
Saved by uncleflo on December 20th, 2018.
The L298 is an integrated monolithic circuit in a 15-lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the connection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage.
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AN235 Application note Stepper motor driving By Thomas Hopkins
Saved by uncleflo on December 20th, 2018.
Dedicated integrated circuits have dramatically simplified stepper motor driving. To apply these ICs, designers need little specific knowledge of motor driving techniques, but an understanding of the basics helps in finding the best solution. This note explains the basics of stepper motor driving and describes the drive techniques used today.
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SparkFun Electronics L298 - Dual Full Bridge Driver PDF
Saved by uncleflo on December 20th, 2018.
The L298 is an integrated monolithic circuit in a 15-lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the connection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage.
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18W MOSFET amplifier with npn transistor | TikZ example
Saved by uncleflo on September 16th, 2014.
This example make use of the circuitikz and siunitx packages for drawing a 18W MOSFET Amplifier for one-channel. You need to have those packages installed for compiling. During the last five days I added fifteen examples to the gallery. Some were sent by email (thank you!), some are from the TeX.SE and TeXwelt.de sites, question and answer sites with creative commons license. I bookmarked nice examples I noticed, and from time to time I’m adding such drawings here, with backlink to the original post. Now the gallery shows 371 drawings.
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Homemade 100 HP Motor Controller for an Electric Car
Saved by uncleflo on July 19th, 2014.
This instructable explains how to build your own 100 HP (peak) motor controller for use in an electric car or motorcycle conversion. It can take any voltage up to 144v, and the peak current is 500 amps. The cost of the components is a few hundred dollars, which means you can save over $1000 by putting one together yourself. At 144v, you can expect a top speed of around 75 MPH in a car.
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Davide Gironi: A simple brushless sensorless motor driver for AVR Atmega
Saved by uncleflo on July 17th, 2014.
Brushless electric motor (BLDC motors) are synchronous motors that are powered by a DC electric source via an integrated inverter/switching power supply, which produces an AC electric signal to drive the motor. For an introduction to BLDC motors, please look at my sensored motor driver post, here: http://davidegironi.blogspot.it/2013/09/a-simple-brushless-sensored-motor.html For this project, I've implemented a simple brushless sensoreless motor driver for AVR Atmega. The code i propose it's not perfect, and can be improved, but for the needs i had it works.
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WB8WFK Foxfinder 80 meter ARDF Receiver - Albuquerque Transmitter Hunting Homepage
Saved by uncleflo on July 17th, 2014.
This page contains updates, feedback and circuit modifications relating to the foxfinder-80 ARDF receiver article that appeared in the November, 2000 issue of 73's amateur radio today. The design data posted at this site reflects the version used at the 2002 championships in Georgia.
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Tutorial on back EMF suppresion: its causes and its cures.
Saved by uncleflo on July 17th, 2014.
Physical electronic access control, almost always, involves driving an electromagnetic locking device of some kind. It might be a powerful magnet or a smaller solenoid within a strike. All these devices are subject to the same basic laws of physics. The electromagnet will store energy when powered and will generate a “back EMF”, or counter EMF (CEMF), when the supply is switched off.
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how to Building ESC for Sensorless Brushless DC motor using atmega 16? - All About Circuits Forum
Saved by uncleflo on July 16th, 2014.
Our forum is a place where thousands of students, hobbyists and professionals from around the world share knowledge and ideas. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
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Controlling brushless motors - Arduino Forum
Saved by uncleflo on July 16th, 2014.
hey guys, planing on making a autonomus hexacopter. using the arduino. wordering if anyone knows how to control a brushless motor with the arduino alone, no esc. i know you need a ac to dc coverter, got any ideas??
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Open-BLDC
Saved by uncleflo on July 16th, 2014.
The goal of the project is to create a completely Open-Source BrushLess Direct Current moto controller also known as Electronic Speed Controller (ESC). This means in our case that the software is released under GPL, version 3 or later and the hardware is released under Creative Commons Attribution-Share Alike 3.0 License.
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Elektronik-Projekte mit dem AT90S2313, ATMega8 und anderen AVR-Prozessoren
Saved by uncleflo on July 16th, 2014.
Verschiedene Mikroprozessorschaltungen, die mit Atmels AVR-Controllern realisiert wurden - vom ATMEGA8 bis hin zum ATMEGA128. AVR ist eine 8-Bit-Mikrocontroller-Familie des Herstellers Atmel. Diese kleinen Prozessoren basieren auf der Harvard-Architektur und verfügen über eine einige KByte internen SRAM- und Flash-Speicher. Die Software der folgenden Projekte wurde größtenteils in C geschrieben und lässt sich mit dem AVR-GCC kompilieren.
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en/BrushlessCtrl - Wiki: MikroKopter.de
Saved by uncleflo on July 16th, 2014.
The Mikrokopter is powered by brushless motors. However, to use such motors the direct current of the batteries has to be converted to an triphasic alternating current) with power output controled so that the speed of the motors can be accurately controled.There are numerous brushless speed controlers available on the market. However very few are available which can fulfill the special requirements: We need brushless controlers which can accept a new throttle value very rapidly (< 0.5ms) and implement it. In addition the controler has to have an I2C bus interface.
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Implementing my own ESC (electronic speed controller)? - Electrical Engineering Stack Exchange
Saved by uncleflo on July 16th, 2014.
I have a project that uses an ESC to run a brushless motor (Hobbyist RC plane sized, 24 gram, 1300-1500 KV). I would like to experiment with eliminating the ESC and driving the motor with my own circuitry and control software. Are there any good tutorials or other starting points?
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Robot Power Product Info - Open Source Motor Control (OSMC)
Saved by uncleflo on July 16th, 2014.
The OSMC is a high-power H-bridge circuit designed to control permanent magnet DC motors. It was designed expressly as a motor control for robot combat in competitions such as BattleBots™ and the like. However the attributes of a controller for such an environment are suitable for a wide range of commercial or industrial motor control applications. The OSMC can drive a wide variety of motors and other loads and is easy to mount and interface to a variety of microcontroller units. The low-cost OSMC is also easy to modify or repair if needed.
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esc - Controlling small brushless dc motors? - Electrical Engineering Stack Exchange
Saved by uncleflo on July 16th, 2014.
I'm designing an ESC with a small microcontroller running at 3.3V. The BLDC motors I have chosen are extremely small, and run best at 3.7V. I have the power supply for both of these (3.7V is VBATT, 3.3V is obtained using a buck converter). They are 3 phase, and the controller needs to be sensorless. I would like to measure RPM and current usage as well if it doesn't mean I will have an overly complicated design. All the docs I have found are great for higher voltages, and ridiculous currents (I will max out at ~5Amps at 3.7V, I don't necessarily need to design a 100V, 300A ESC). Questions I have: Is there a reference design I can follow somewhere around the net? What kind of protection circuitry should I use? How simple can I go? Are there any ICs that will simplify the circuit even further? Any other recommendations/tips/pointers?
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Build a Versatile Miniature High-Rate ESC with BEC and Brake
Saved by uncleflo on July 15th, 2014.
This electronic speed control (ESC) for brushed motors combines the features of two of my earlier designs. One was a high-rate 30A ESC with a brake, and the other a high-rate 12A ESC with a BEC (receiver battery eliminator circuit). This ESC is an analog one, using off-the-shelf components. There are no microprocessors (which would require specialized equipment to program), and no surface-mount parts. It’s not as small or as light as many commercially available ESCs, but it’s smaller than many other do-it-yourself designs. It’s also versatile, in that it can be built for many applications, ranging from small Speed 400 sport planes to "hot liner" sailplanes.
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Arduino Playground - MPU-6050
Saved by uncleflo on July 15th, 2014.
The InvenSense MPU-6050 sensor contains a MEMS accelerometer and a MEMS gyro in a single chip. It is very accurate, as it contains 16-bits analog to digital conversion hardware for each channel. Therefor it captures the x, y, and z channel at the same time.
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