Questions tagged [module]

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21 views

Would UART communication between this NIBP Module and ESP32 need a level shifter?

Good day! I'm trying to send commands to this NIBP module using my ESP32's UART pins and I'd like to ask if I would need to use a level shifter for this? I'm also not familiar with using level shifter ...
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1answer
70 views

On the LM386 opamp Module, why I am getting an output without giving input

I am using an LM386 opamp Module from Amazon. I am powering it with a 5V input (just to power it, not intending to amplify anything at this point). Nevertheless a multimeter measures an amplified ...
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2answers
59 views

Do DIN rail mount interface relay modules with a “spare” terminal exist?

I'm currently designing an industrial control panel that I'd like to be as compact as possible, and was looking at interface relays, and was hoping to find a specific feature, but now I'm not sure it ...
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1answer
113 views

Can anyone explain how this 433MHz RF transmitter module works?

I don't know the basic functionality of the circuit and I need a complete description of every component.
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27 views

What is the required ground size for the S2LP RF module?

I'm designing a four layer board with an RC-S2LP-868-HA RF module which has a little helical antenna. I have two question about that. First, how do I calculate the required ground size for the RF ...
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23 views

How do I prepare my SIM card for SIM800L GPRS GSM module?

Im trying to send a SMS message using the SIM800L GPRS GSM module. I know this might sound stupid but, do I need to load my SIM first before it can send SMS message? If possible, can I just pay after ...
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0answers
51 views

High voltage booster with continuous output?

I need a module that can take a DC voltage of 2V - 12V continuously as its input and produce atleast 2KV DC continuously as its output. I've come across high voltage generator boost modules but they ...
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4answers
616 views

Why does the Tesla battery module capacity not work out in calculation?

https://www.evwest.com/catalog/product_info.php?products_id=463 I am referring to the Tesla battery module listed in the above link. It says a single cell has the following specs: Nominal Voltage = 3....
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1answer
101 views

Can't get 2-relay module to work through JD-Vcc

I bought this 2-relay module: https://www.amazon.de/gp/product/B00E0NTPP4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I'm testing it out using a 5v 1 amp power supply. If the JD-Vcc jumper is ...
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1answer
77 views

Did I buy a broken RF module? [closed]

I am having trouble with a RF relay module that I bought off eBay, which I am using to control a 30A automotive relay to turn a 12V 20A trolling motor on/off. I’ve attached my circuit diagram below. ...
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2answers
152 views

How to convert Li-ion battery voltage to 1.5 V?

I want to use Li-ion batteries to power devices that work with AA (1.5 V) batteries, to have best autonomy and to be able to recharge it easily (using a battery manager module). I had thought of a ...
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1answer
52 views

Looking for a validating bill module [closed]

My team and I are working on a project which deals with money management. Basically we need a module that could count and verify the authenticity of bundles of bills. For the moment, we only found ...
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44 views

Ch376 USB Module with SPI

What is the problem here, I used logic analyser to check the data and commands i send to the Ch376 USB Module, And all are right, But the module is not responding with any reply, Just return back the ...
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3answers
108 views

Any modules which can measure the distance between two modules even through obstacles?

This is for a social distance enforcing project for school. I want to know the distance between Module 1 and Module 2, where each module is worn by a person. Usually ultrasound would be used, but I ...
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1answer
85 views

Question regarding chinese voltmeter ammeter module

I am new to this forum. I am a Diploma in Electronics from India and a passionate DIY hobbyist too. I have a question regarding cheap 10 amp ammeter and a voltmeter module I bought off aliexpress. I ...
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35 views

Replacing a hard to get BGA part with a small circuit board?

We have a production design PCB with suddenly hard to source BGA part. It could be replaced with a much easier to source device, but we'd prefer not to go back to layout and redo/reverify the board ...
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1answer
567 views

What to check for when buying an electronic component or module?

This has been raised as a canonical Q and A for future reference How can I acquire electronic parts/items/modules and ensure that there is minimal risk of them being unsuitable for my project or ...
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0answers
46 views

Wireless RF Serial Link 865-869MHz 2KM range (WIR-1186)

Wireless RF Serial Link 865-869MHz 2KM range (WIR-1186) is what I am using for my project's wireless meter reading. It works fine. My doubts are that the same module used for nearly for same purpose ...
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1answer
105 views

Conditional Port connectivity during module /wrapper instantiation

I have a wrapper, with multiple ports (mainly used to parameterize/scale a particular module) and in this wrapper i parameterize the module instantiation with help of generate for-loop. i.e. ...
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1answer
71 views

Help me to identify this crystal oscillator module

Please help me to identify the manufacturer of this crystal oscillator module so that I can search for its datasheet.
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1answer
45 views

Integrating an Altair module with an Arduino

As a disclaimer, I have experience with Arduinos and Raspberry Pis, but I know embarrassingly little about electrical engineering and anything beyond the basics. Most of my previous projects consisted ...
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3answers
153 views

Calculate resistor value of Optocoupler & Transistor

I have a problem working out the values for the resistors R1 & R2 of a relay module. Right now, I use R1 = 1k & R2 = 560 Ohm, but that is not working. What resistor values should I use? And ...
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46 views

Accessing SMT pins on prototype board

I need to be able to solder wires to the hidden pins of an smt ic. The ic is soldered directly to the pcb, and they are not visible. I need to access the PCM audio interface on a sim7500e, and the ...
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0answers
419 views

Unable to program and debug ST BlueNRG-M2SA Bluetooth module

I would like to ask you for help with programming and debugging the BlueNRG-M2SA module. I am just not able to get started and successfully connect to the module using ST-Link v2 over SWD. Neither ...
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1answer
47 views

Max4080 REF pins

Bought the Max4080 module and as usual I read the datasheet after purchasing it. In the datasheet pin 6 and 7 are NC but on the module those two pins are connected as F1B and F1A: What F1B and F1A ...
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1answer
814 views

Any solution to avoid humming sound / speaker noise for MP3 bluetooth module?

So I have here sub woofer Simbadda CST 5100N and I want to convert it to bluetooth, so bought an MP3 bluetooth module to convert it. The module needed 5 to 12 volt DC to operate. Inside the speaker, ...
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2answers
624 views

Should I remove the termination resistor from the CAN Bus transceiver module?

I develop a CAN-BUS receiver (logger) with an ESP32 and CAN-BUS transceiver. The CAN-BUS transceiver modules which I found and bought have both 120 Ohm termination resistors. But the CAN-BUS to which ...
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1answer
466 views

Verilog Missing connection for port

I was creating a circuit using two dual input AND gates into a dual input NOR using three modules and module instantiation. The first module is for the AND inputs and the second module is for the ...
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0answers
71 views

Connecting BLE module to Lipo battery and recharge it?

I would like to use a BLE module, where I can solder a tactile switch. There should be also the option to charge the module via USB. Earlier I have only worked with breakout boards, where I could ...
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1answer
237 views

Instrumentation Amplifier Connection Problem

I am trying to build a circuit capable of measuring ECG signals following the scheme attached. Since AD623 was out of stock, i ended up buying something like this: https://www.arduino-tech.com/cjmcu-...
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1answer
69 views

What is the difference between a hard module and a softmodule in RTL verilog code?

I understand a Verilog code is made up of modules there are RTL codes where a lot of submodules can be instantiated in the main module. If I assume the main module(the top one) to be the parent and ...
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2answers
349 views

ESP32 FCC Certification

I want to build an esp32 device using the esp32-pico-d4 chip that I will sell to hobbyists. However, I recently came across something called the FCC. It requires radio devices to get certified which ...
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2answers
100 views

Step down converter PCB

Is one side of R050 connected to OUT- ? To nut for the acrylic housing would bridge the little gap there - is that a problem? Thx.
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1answer
61 views

Module identification

Can anyone recognize this module in this pic here? I am analysing a circuit and it would help me a lot!
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3answers
1k views

Instantiating module in condiotional block verilog

Considering a module cannot be instantiated inside if block, how are we supposed to instantiate the module outside the if-else ...
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1answer
240 views

Measure Power Consumption of Battery Charger?

I want to ask how to measure power consumption of battery (Li-On 18650) charger module (TP4056 and USB Boost) and the total power consumption, if i have this circuit: I have already know the power ...
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3answers
352 views

output is affected by the next clock period

I am trying to write verilog code or or thinking about a circuit to do the function below. In the clock period n, if there is a falling edge on S1 then OUT is high for the next clock cycle (n+1), if ...
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1answer
78 views

sequence detector doesn't work expected

I am trying to write verilog code to do sequence detector the the state diagram below. Input is a 2-bit signals and there're 3 state variables as in the image. The goal is to detect the sequence (01)-...
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2answers
791 views

verilog code with two falling edges

Please look at the picture for this description. I have a problem with writing verilog for the following logic: Consider clk and R3 are input signals & out is the output signal. At the falling ...
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1answer
33 views

How to assign a single output to different modules in Verilog?

I have designed a simple ALU using Floating Point IP Cores in Xilinx ISE. I have an adder, a subtractor, and a multiplier. The IP Core of addition does the subtraction too and we have only two modules ...
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2answers
309 views

Instantiating modules in SystemVerilog

This is a picture of a system that I am building: (original) I am writing SystemVerilog for the Counter4to3 module, whilst the other modules (Full adder and half adder) have already been provided to ...
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3answers
571 views

doubt when Arduino connects to multiple i2c devices

I am using Arduino nano to drive multiple i2c devices, actually, they are premade modules which are available on eBay. ads1115 ADC, ds3231 RTC, 20x4 character LCD i2c module, at24c02 EEPROM module ...
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1answer
357 views

Verilog Include Statement Error

I'm trying to teach myself Verilog. I have some previous experience using VHDL. I am using Lattice Diamond as my environment. I successfully created and simulated a full adder. I now want to use this ...