10answers

[PCB Prototype] How would I desolder these switches?

This remote control, used to control my blinds, and I wanted to replace the buttons (switches?) on it with a relay board controller, so that I could use the remote from a raspberry pi instead of havin...
3answers

[Others] Can I run a Passive Speaker without an amplifier?

Can I connect a 0.5W Speaker direct to an input (Raspberry pi in my case) and expect it to be as loud as a let's say a phone speaker? Will a very small speaker work directly from an input? If not ...
  • answered Oct 23,2020
    by Joson
2answers

[Others] How to connect two PT100 to Raspberry pi?

How to properly connect two PT100 (or similar) temp sensors to raspberry pi. I have been googling and found MAX31865 converter but is it the best option? If im not mistaken both sensors would need own...
  • answered Sep 14,2020
    by Andrew
2answers

[Others] When using an NPN transistor for switching does the emitter have to be grounded?

I am trying to control a remote via the gpio pins on a raspberry pi. I don't want to have to use relays because of the space they take up and the mechanical noise. The problem is the pads of the r...
  • answered Aug 11,2020
    by Gorge
4answers

[Others] Is it ok to connect the SCL/SDA pins of 2 breakout boards to the same Raspberry Pi (3B+)?

Hi, I hope to connect a LSM303 magnetometer breakout board to a Ras Pi 3B+ that already has a Adafruit 16-Channel PWM/Servo HAT attached. Can I solder the I2C connections of the Magnetometer to ...
  • answered Jul 29,2020
    by Joson
3answers

[Others] Is it ok to connect Raspberry Pi's GPIOs to Arduino's digital pins?

I have a little setup in which I want to trigger certain events on the Arduino using Raspberry Pi's GPIOs. Therefor, I connected GPIO 21 to Arduino's digital Pin 5 and Pi's GND to Arduino&...
  • answered Jul 24,2020
    by Joson
2answers

[Others] How to convert signals from a raspberry pi to a relay board.

How to use an TXS0108E bi-directional logic shifter to convert 3.3V signals from a raspberry pi to a 5.0V signal to a relay board. I'm trying to trigger a 5 volt relay board using a raspberry...
  • answered Jul 13,2020
    by Joson
Ranking Name Answers
1 PCBWay Team 8
2 Frederic 3
3 Engineer 1
4 Jegatheesan Soundrapandian 1