Neopixel resistorproiecte

Unit “A” features a printed circuit board (PCB) which’s ground potential is grounded to chassis potential via a 2kOhm resistor. Unit “B” contains a PCB which’s ground potential is connected to chassis potential directly, resulting in a 0Ohm resistance. Unit A supplies unit B un-isolated with 100V, 20W of power. The wire used is one shielded pair of 20AWG copper cable of 15m length. The shield is connected to the chassis of both units. Assume room temperature. Calculate the current flowing over the cable shield by assuming the shield behaving like a third conductor in terms of resistance, explain the methods you used and describe what downsides there are in the demonstrated setup. Additionally suggest 3 measures to improve the setup

... ii. 12 resistors b. Ground Connects to: i. Pins 12,18,19 of 74154 c. A Input to Pin 23 of 74154 from connector d. B Input to Pin 22 e. C Input to Pin 21 f. D Input to Pin 20 g. Output pins 1-11 , 13 goto each of the 12 LED bulbs (negative pin) h. Option to cut a trace to hand wire extra light 1 or extra light 2 i. Positive pin of each LED goes to unused side of resistor 3) Physical a. Board to fit in IEE Planer display i. Height 70mm, width 45.4mm ii. LEDs to fit in holes. They have leads so there is some wiggle room iii. Center holes are centered (22.6 mm) from edge iv. Left and rights holes are centered 6.7mm from vertical edges v. First row of holes (center is

Necesito, gestionar un valor resistivo, según el valor de rpm de un motor de coche. Habrá una matriz de datos mediante la cual se hará la conversion de rpm a resistencia, utilizando un resistor digital con conexión spi o similar. Si hay posibilidad de modificar datos de la matriz mediante un pc o similar mejor.

...mounted vertical USB 3.0 ports 3. Rewire M.2 E-Key to M.2 M-Key (relocating to rear of the PCB) 3. Adding a push-pull nano sim port wired to M.2 M key 4. Removing HDMI and display port connector 5. Adding 3rd CSI port (identical functionality of CSI-0,CSI-1) 6. Adding MCP2515 (wired to GPIO SPI pins) and TJA1050 wired to a RJ45 connector (pinout to be provided) with a provision for a terminating resistor via a jumper 7. RTC coin battery holder wired to existing RTC battery pins (rear of the board) 8. CSI-0 to remain standard CSI connector, CSI-1 and CSI-2 (per point #5) should have the CSI pins wired to edge mounted HDMI connectors (full size, per the following

Hi Julio D., do you think you can design the resistor circuit i am looking for? I need a 12v load resistor circuit as pictured in the attached wiring diagrams. They are 7-8 omh and 21 -25 W. I need it to have exactly the same function of simulating load on the circuit but without getting so hot. Feel free to use multiple smaller resistors if you need to, as long as i can replicate the circuit on a breadboard or circuit boad. If you can, i can hire you privately. In my contest i have attached 2 more pictures/diagrams of what i need

Hi Julio D., do you think you can design the resistor circuit i am looking for? If you can, i can hire you privately. In my contest i have attached 2 more pictures/diagrams of what i need

I need a resistor bank made up to simulate approximately 5w to 21w of current draw to a 12v circuit. This is to simulate a globe on a car where LEDs have been fitted, and the car computer thinks there is fault because of the low resistance. A common solution for this is a load resistor (picture attached), however this gets two hot, as it needs to be enclosed in a plastic housing. Therefore, i need the load spread over multiple lower power resistors. Specs- 12v only - needs to draw 0.5A to 1.75A of current - needs to be simple, trying to use only resistors and breadboard circuits - cannot get hotter than 100*C

We have one PCB coil printed on PCB. We like to know how much resistor we can use? The input will be from Function generator from 1 HZ to 1 MHZ or more.

Hi Saddam, We currently have a working prototype for a small IoT project. We need few amendments: 2 pin-to-pin chip replacements, few value changes, adding 2 resistor & 1 cap, relocation of few components and minor checks (upon discussion). Work is quite straightforward without major changes. Would you have time to discuss further details? We will provide all files and expect to get final PCB layout (same size/shape) with production files. Look forward to your response! Tayfun

The total power generated from the PV array should be 91kW.  The single-phase inverter should be implemented using IGBTs and switched via Bipolar or Unipolar PWM.  The interconnecting filter should be a simple inductor with a series parasitic resistor.  Second Order Generalized Integrator (SOGI) PLL must be utilized to perform grid synchronization.  You may design and implement a MPPT algorithm of your choice.

...need an electric schematic on eagle cad. using a Arduino Uno, GARMIN lidar sensor v3, and MPU-6050 Module. I would need by December 6 7pm eastern time. the pins are as follow Connections: LIDAR-Lite 5 Vdc (red) to Arduino 5v LIDAR-Lite Ground (black) to Arduino GND LIDAR-Lite Mode control (yellow) to Arduino digital input (pin 3) LIDAR-Lite Mode control (yellow) to 1 kOhm resistor lead 1 1 kOhm resistor lead 2 to Arduino digital output (pin 2) Power Enable (orange) to pin 8 of Arduino (Capacitor recommended to mitigate inrush current when device is enabled) 680uF capacitor (+) to Arduino 5v 680uF capacitor (-) to Arduino GND See the Operation Manual for wiring diagrams and more information:

Hi Sukanta, We currently have a working prototype for IoT project. However we need certain amendments: - Pin-to-pin chip replacements - Minor changes: capacitor location, resistor value etc. - Optimisation (list of points will be provided) Work is quite straight forward without major changes. Would you have time to discuss further details? We will provide all details and expect to get amended PCB layout (same size/shape) with production files. Look forward to your response! Tayfun

Hi Md Abu Sakib M., Here is the project with new payment method. We currently have a working prototype for IoT project. However we need certain amendments: - Pin-to-pin chip changes - Minor changes: capacitor location, resistor value - Optimisation (list of points) Work is quite straight forward. Would you have time to discuss further details? We will provide all details, and expect to get amended PCB layout (same size/shape) with production files. Look forward to your response! Tayfun

Hi Md Abu Sakib M., Are you available for PCB work? We currently have a working prototype for IoT project. However we need certain amendments: - Pin-to-pin chip changes - Minor changes: capacitor location, resistor value - Optimisation (list of points) Work is quite straight forward. Would you have time to discuss further details? We will provide all details, and expect to get amended PCB layout (same size/shape) with production files. Look forward to your response! Tayfun

...power consumption of a 240 Volts AC resistive load (such as an electric water heating resistor). Context for use: Say you have a 230 VAC circuit with a circuit breaker rated at 15 Amps. On that circuit, there are several appliances including a 2000 Watts (or 2000 VAC for the sake of this example) water heating resistor. Assume a situation where 7 Amps are being drawn by the other appliances leaving only 8 amps left. The remaining power is 8 A x 230 V = 1,840 VAC. Turning on the water heating resistor will trip the circuit breaker unless the other devices are switched off. By using the proposed device (call it resistor dimmer), the user can reduce the power to 1500 VAC and therefore turn on that resistor. Controlling the dimmer using a 0-10V DC input...

IEC62053-31 describes test procedure for S0 input and S0 output devices test setup. Build an altium designer based design for input test device (board connector, Rotary switch, 3 resistors, banana connector for power supply) and output test device (board connector, resistor and banana connectors for power supper supply / voltage meter). Schematics and pcb needed.

Kicad re- routage board add resistor

I need someone to write a Arduino code for my ESP8266 to measure voltage, current. It should display this information on the an iOt platform. The voltage range is 200VDC - 410VDC and I will use a voltage divider method for reading the voltage. Also I will use a 500A shunt resistor to measure current. Finally will need to to display State of charge of the battery on the IOT platform and control a relay based on voltage or State of charge of the battery.

Hi i have accelerometer GY 521 and neopixel. I need write code, that neopixel change color when e.g. change axis Y or Z. Board is arduino nano. It will be controll one led strip neopixel (30 pcs led - one meter). There it will be push button and it will be change mode neopixel. First mode (change color via GY521), second mode rainbow color (independent GY521), third option blink colors (independent GY521)

Provide component suggestions to upgrade existing off-the-shelf device to make RF output power of module to be as strong as possible. (200-300% higher?) 100% duty cycle@70 degrees F ambient temperature. We will buy and modify the module shown here b...possible. (200-300% higher?) 100% duty cycle@70 degrees F ambient temperature. We will buy and modify the module shown here based on your engineering recommendations and component specifications: Suggestions needed to upgrade the main TO-220 transistor, heat sink, resistor(s) and capacitor(s) etc. to make output power as high as possible. Use same coil. 48VDC 6A switching power supply available to drive circuit.

...Package: 7mm x 7mm (0.5mm pitch) The job is in 2 parts: 1. Create (or download) the UFBGA132 component of the STM32L496QGI6P into the new schematic. We will provide a table of pin mappings for the new component compared to the old. The new component will include 68 additional pins and the table will confirm whether they should be connected to ground, to power, or floating and whether there is a resistor required. We would ideally like to keep the existing footprint in the schematic, so that there will be 2 parts sitting in parallel but only one would ever be loaded into the build 2. Once the schematic is confirmed, we require the new PCB layout to be updated As with the schematic, ideally we would like to retain the footprint for the existing LQFP-64 package. As defined in t...

I want to make a power supply for desktop computers powered by a toroidal 50/60Hz transformer. smps transformer driven at high frequencies will not be used. A toroidal transformer operating at 1000VA output power with 96% efficiency will be used. After the 220V input part, there is a fuse, varistor, NTC resistor protective circuit stage. There will be an EMI filter on the next floor. Then it will be connected to the primary winding of the toroidal transformer. number of primary and secondary windings and cable diameters should be calculated for 1000VA. The transformer will be protected with a thermistor to be attached to the toroidal transformer and added to the circuit. After the secondary windings, a full bridge rectifier should be applied separately for each winding and the follo...

Need someone with previous experience in CCTALK and esp32, We use following example as reference. We are facing an issue, using above example, we connected rx and tx together in with a diode, and resistor to +3.3v as shown in tutorial, but we get no answer from the hopper. The esp32 need to communicate with an moneycontrol mk4 hopper, job is done when you are able to make the hopper give an answer in the serial monitor in the Arduino IDE... Should be a really simple job for the right guy/ girl You get what you bid, don't ask for more, dont ask to do money outside freelancer. If you did not work with cctalk and esp32, then DONT bid please.

We want a png image including the next pun: "why did mr. Ohm marry mrs. ohm? Because he couldn't resistor!", with a draw of 2 ohms with human features and marrying each other.

An experienced PLC programming professional is required for the following relays: REG670 – • RXTEE 4, Injection unit, 1MRK002108-BA – • Protective resistor, 2X560 ohm, RK795102-AB – • RET670 – • REC/REQ650 X 3units • REM611/615 • REF615 ...... I send a specification on request

My name is Atte Bakker and I am a volunteer with the Dutch Cyclists' U...are two Li-ion batteries that must be charged correctly. To that end, I found a battery tester that fits exactly what is needed: a DIY kit with a KA2284 (please see attachment). In it is a variable resistor that I want to replace with a fixed resistor. Because otherwise I have to tune each unit separately, which can cause large differences. I have already done tests with a combination of fixed resistors of 8479 Ohm, but they gave a bad result: the LEDS either all lit up or not at all. Would you be able to modify the block diagram in such a way that the unit works as it does with the variable resistor? Thank you in advance for your indispensable response! Best regards on behalf of the Dutch ...

Need a PCB design that accommodates the physical model that is a circle 4.25" in diameter. Each LED is connected to an Arduino Teensy PWM pin. Each LED requires a 52 OHM resistor. 4 wires will connect to the PCB via soldered wire: 5v, ground, canbus high, canbus low. Design Requirements: 1) PCB designed with through-holes to solder in 24x Piranha Red LED () 2) PCB design includes a 52 OHM resistor in series with each LED anode (24x in total) 3) PCB design to include header pins to solder into Arduino Teensy 4) Each LED is connected to a unique Teensy PWM pin 5) PCB design to include 5v power supply to Arduino Teensy and common ground 6) Each LED shares a common ground with the Arduino 7) PCB design to incorporate

...want the arduino code to: (1) Run the pump motor for 10 seconds when button 1 is pressed (2) Run the pump motor for 25 seconds when button 2 is pressed (3) If the pump is running, I want the user to be able to stop the pump if they press either button 1 or button 2. (4) I want the neopixel ring on the playground express to light all the neopixels in blue when button 1 is pressed and countdown the 10 seconds by turning of each pixel in the ring off during the 10 seconds that the pump runs. (5) I want the neopixel ring on the playground express to light all the neopixels in white when button 2 is pressed and countdown the 25 seconds by turning of each pixel in the ring off during the 25 seconds that the pump runs. (5) At the end of either pump run (10 or 25 seconds), I want...

...there is a potentiometer, which can be set by the human between 0-10V. The microcontroller should then set and hold this set value as an example 8V. The LBS is a power module, which can be under load, which is why the voltage or current changes over time. The MC now sets output 9 to 8V for our example. The power module now receives the request to regulate 8V on input 14. Via the measuring resistor, it outputs the actual power via output 16. Here as an example without load 8V the MC gets this 8V on input 11. Additionally it gets as an information example 0V from output 17 on input 12 because no current I flows. Now an example under load. The MC sets 8V at output 9, the LBS gets this 8V on input 14. With the measurement of output 16 now only 7.3V are present. The MC receive...

So I have used RGB in my project (Link for those RGB: ) and they were working perfectly, now by mistake I ordered another model, thou they look similar. () Now I just want you to update the library and code so this new model works. If you open the link you will find the libraries and sample code there on their website. Dm me for the program code, I will send you.

...more to solder, because most of the elements are SMD and they are hard to solder specifically for kids. So I'm wondering if we could replace some SMD elements with THT elements. And remove what is not necessary. There is another problem with ultrasonic sensors in this schematic. All ECHO outputs are connected together. I came up with a solution where we use one MOS-FET for each sensor and pull-up resistor and so we change all the outputs into an open drain. Also servo motor needs to be change in to DC motor. I need that the car is programmed via bluetooth and a program in which the car will go forward, backward, left and right. And if is it possible that you can explain what did you do? Because i will show this to some kids and i would like to explain how to do it. And must ...

Hello, I'm a medical engineer student and I need help with an android app (using MIT AppInventor 2 or Android Studio) until tonight. I have an montage with 6 force resistor sensor evaluate the risk of foot diabetic ulcers apparition. I need an app to show the result, like in the attached photo.

...input to the microcontroller while 5 pins of the microcontroller should be used as outputs to the multiplexer selection lines. The input lines of the multiplexer come from the incubators (two inputs from each incubator). What you should do • Build the controller and interface it to the 16 × 2 LCD, the multiplexer, the buzzer and the push button. Remember to add a 4MHZ oscillator and a 4.7KΩ pullup resistor to the MCLR pin. Take a picture of the design that you’ll do on paper. • Build the PIC assembly code that implements the behavior described above under MPLAB IDE. • Assemble your code and make sure you get a successful build. Use the simulator if you wish to make sure the behavior is correct. • Send the zipped folder that contains your sour...

...the microcontroller (via USB). * Microcontroller (ATSAMD21G18 - Cortex M0 from Microchip) - this needs to be redesigned from our prototype module which used the ATMega32U4 MCU. * Voice Coil driver - pretty straight forward PWM speed controlled motor driver with direction pins. * Fan driver - based on a DAC and a power supply circuit. Feedback pin from the pan goes back into the MCU with a PU resistor * Uptake and Feed motor drivers (5 wire, 4 phase). These are simple UNL2003A drivers, which just need 4 pins each from the MCU. * Pixel Ring connector. This is just a connector with 5V power and a pin from the MCU. * Tape sensor connector. This is just a connector with power and I2C pins from the MCU. * Camera connector. This runs to the compute module. * Voltage regulators. ...

The main issue is the synchronization. It needs to be sync that all LEDs work simultaneously when the Master sends a signal to the Slave saying the function that needs to be performed. I have not tried the other functions like 2 fade color, rainbow, etc. Because blinking is not working properly as it should. If you could try them out, please. For example: when press '4' in the Tera terminal, it sends a message to each slave to do the function of right which in each slave is different. One does 14 LEDs blinking and the rest white on that string. In other strings will do half of the LEDs blinking and the other half of the string is white. And so on. So all that blinking has to be in sync and every message send by the Master. I am using a gpio interrupt to see if I could get it to...

I need to sync the string of LEDs to work at the same time when a new signal comes from the Master. I have 5 strings of LEDs but when it does the blinking the 5 strings are not synchronized. It has a Master and 5 slaves. Each Slave control a led string that has a different amount of leds. The data sent from the slave to the string of LEDs is by PWM DMA using the NRZ protocol.

I need to sync the string of LEDs to work at the same time when a new signal comes from the Master. I have 5 strings of LEDs but when it does the blinking the 5 strings are not synchronized. It has a Master and 5 slaves. Each Slave control a led string that has a different amount of leds. The data sent from the slave to the string of LEDs is by PWM DMA using the NRZ protocol.

In need of a PCB engineer. I have attached drawing of what i need. Circuit works but needs some tweaking. Need capacitor values and resistor values specified. The circuit should cause an LED to illuminate after a (+) signal is received. Vcc will be steady power. Refer to bottom of drawing for best description of the goal. Also had to place an NPN transistor in the circuit to achieve goal but it has caused some bleed through issues, may be due to values i have used on components. System should work from a range of 10V-16V with output for LED at 12V

I have an existing control system which reads the frequency from a hall effect (sine wave) sensor. Let's call this circuit the 1st circ...chip. I see there are several variations to the LM339A chip. Perhaps simply changing the chip may fix the problem. I have attached a picture the circuit. It calls out the LM339AD chip, but the boards we had built show just LM339A. The actual chip shows: TI (logo) 76A 184M LM339A 64 Pin 1 is ground, pin 2 is 5 volt power, pin 3 is output, pin 4 is input from sensor. Note that the variable resistor is NOT used. I am looking for some suggestion to get both circuits to work, keeping in mind I can not change either the 1st circuit or the sensor. I also can not give you a circuit diagram of the 1st circuit and no part number for the hall...

Yapılması gereken iş basit, ama kodlar uzun. Kullanıcıya hangi direnç tipini hesaplayacağını soruyorsunuz. 4 band resistor, 5 band resistor veya SMD resistor diye, sonra kullanıcıdan direncin renk kodlarını istiyorsunuz, hesap yapılıp direncin kaç olduğu yazılacak seçilen direnç çeşidine uygun şekilde. The work to be done is simple, but the codes are long. You are asking the user which type of you to calculate. It will be designed as 4 band resistor, 5 band resistor SMD resistor, after or from the user to design the additives color codes, designed to be designed.

I need an interface card to connect a Raspberry Pi to six separate DHT22 sensors. - A 40 flat ribbon cable will come out of the Raspberry Pi, preferably into a 40pin shrouded header in the PCB - Each DHT22 needs to be connected to 3.3V (Pin1) and GND (Pin4) as well as a signal (Pin2). Pin1 and Pin2 on each DHT22 need to be connected using a 4.7K pullup resistor. - Signals connect to Raspberry GPIO pins 4, 17, 18, 27, 22 and 23, respectively - Outgoing connectors can be shrouded headers or something else, - Flat ribbon wire is preferred for connection to DHT22s. - Resulting file(s) need to be ready to upload for printing/assembly including parts list and component placement (Altium, KiCad, Eagle, Target3001, Fritzing, LibrePCB,

I'm looking for someone to create a PCB design for a hexagonal panel of 271x equally spaced 5mm LEDs. It'll be a 1 sided board. The 5mm LEDs solder through the PCB and the 1206 SMD resistor pads are on the back. Each LED has its own resistor. The LED centres are 10mm apart. The entire panel will be powered through USB. A + and - pad will be acceptable. Ideally I'd need the files for the tracks, drill point, outline, silkscreen and solder mask.

I want to connect different resistive loads with the three-phase generator. Based on the one part of my system that has reciprocated motion, Let suppose when the system moves in downward motion each phase of a three-phase generator connected to 10 ohms and during upward movement...that has reciprocated motion, Let suppose when the system moves in downward motion each phase of a three-phase generator connected to 10 ohms and during upward movement each phase of the generator is connected to 20 ohms. After that, the circuit is connected to the battery for charging. Note: Flexibility is required that I can replace resistance with different resistive values or use a variable resistor during the design of the circuit. Also, MATLAB/Simscape model is required to develop for the designe...

Hello, I need a simple 8 buttons + series of neopixel leds board, ready to be manufactured with Gerber, BOM, etc. Here I share a simple idea, with approximate dimensions. The only relevant one is the distance between buttons and ws8212b leds, 33 mm. The buttons connect to a common 5v connected bus. The neopixels should be connected in series, and the last data output goes to the last output pin, and will share 5v and gnd buses. Idea: Details via chat.

PCB Designing for Solar Charge Controller 1. Solar Charge Controller for Solar Lamp Input voltage: 6V Output (CV, CC): 3 - 3.2V, 0.5A max (Output current can be adjusted by changing resistor value) Battery: 3.7V Operation: Dusk to Dawn Overcharge Protection: 4.25V Over-Discharge Protection: 2.8V • Protection: With over-charge and over-discharge • Charging during the day and illuminated at night, automatic circulation without human intervention • Working State: The solar panel recharges the battery during the day and the LED light remains turned OFF. When there is no sunlight in the evening, the LED light is automatically turned ON, that is, the battery automatically recharges during the day and night. Gerber file development • Design should be as compact as ...

Hello! I have posted a question here: Somebody suggested to use "Adafruit force-sensitive resistor". I would need somebody to build such a device for me. I need to be able to detect the pressure on my computer. If you would do it, please tell me how I could process the output on my computer. Would your device work via USB? I'm hoping to get it done by somebody in Europe because of the shipping costs. Thank you!

Password Based Circuit Breaker is a simple project that helps in controlling the electrical lines with the help of a password. Nowadays, electrical accidents to the line man are increasing, while repairing the electrical lines due to the lack of communication between the electrical substation and maintenance staff. This project gives a solution to this ...to P2.7. Using this keypad, we need to enter the password. Four Lamps (acting as Electrical Lines) are connected to P0.0 to P0.3 through the 4 – Channel Relay Module. These are used to indicate circuit breaker state (Light ON – Line Active and Light OFF – Line Not Active). If you are not using the Relay Module, then you need to use 4 BC547 NPN Transistors (along with its current limiting base Resistor) in orde...

...power: 1.5kW c) Output voltage ripple: 10% d) Current ripple: 10% (+2%) of DC current e) Output is not isolated from the input f) Repeat the design for Ls = 8 mH Problem 2 Show that a three phase 4 wire star connection source with two equal source inductance (Ls = 2.5mH) where each phases are connected to a full-wave uncontrolled rectifier with 11 mF capacitor in parallel with 16 Ohm resistor has a severe neutral current (refer lecture note in rectifier page 53 and 55). Measure the Vpcc and suggest the size of neutral wire. Requirements You have to first do a hand calculation to estimate the components for the design. Then simulate your results using PSpice. Show all the key waveforms. Describe relevant phenomena, if any. All component used must be “realis...

...power: 1.5kW c) Output voltage ripple: 10% d) Current ripple: 10% (+2%) of DC current e) Output is not isolated from the input f) Repeat the design for Ls = 8 mH Problem 2 Show that a three phase 4 wire star connection source with two equal source inductance (Ls = 2.5mH) where each phases are connected to a full-wave uncontrolled rectifier with 11 mF capacitor in parallel with 16 Ohm resistor has a severe neutral current (refer lecture note in rectifier page 53 and 55). Measure the Vpcc and suggest the size of neutral wire. Requirements You have to first do a hand calculation to estimate the components for the design. Then simulate your results using PSpice. Show all the key waveforms. Describe relevant phenomena, if any. All component used must be “realis...

I need to draw and simulate my circuit into the multisim to see how db gain is changing according to resistor values, I need 3 different specific db values to be observed on graph. In total there are around 15 components to draw.