The ACS712 outputs a voltage from 0-5V and the ESP32 ADC reads from 0 to 3.3V using 1.1V as vref. There is a voltage divider already to reduce the 5V to 3.3 range.The problem is: voltage drops on the ...
Hi all. The output frequency of this power supply is 20-100kHz. Since its DC out, which would be 0Hz, am I correct to assume that the 20-100kHz would be caused by the switching. So I could in theory u...
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 ...
Hi all, my mini USB connector somehow broke off the board and has been rattling around its casing, I opened it up and found where its supposed to be connected, is this saveable? could I just solder th...
Hello, I was wondering if it would be possible to have the Dimensity 1000 system on chip preinstalled to a pcb. I have not seen an option for it and I don't have the time to source the chips and s...
I'm expecting to see the state of a pin that I'm reading to pull low for maybe 50 us and then back up to high. The original code running on an UNO/Nano code looks about like this:while ((...
I'm doing a Sanitiser dispenser with an Ultrasonic Sensor. For every alternate sensing of the hand, I'm getting a brief disturbance signal from the relay. It goes on for a few milliseconds and...
