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Hardware Design

Why Isn’t the CM4 Able to Pull the ESP32’s RX Pin Down to 0V?

I kind of have an issue somewhere and I am honestly quite stumped. I designed a board using a Raspberry CM4 and an ESP32S3. The ESP32S3 has USB-PD and is […]

Why Does My ATTiny85 Analog Input Return a Constant Value After 24 Hours?

Hi, I’m trying to get the value of my battery using an analog input of my ATTiny85 to create a gauge. To do this, I made a voltage divider to […]

The voltage of the RXD and TXD depends on the VCC pin, right?

Morning guys; I bought an HW-624 to connect to the console of my SBC and ESP. However, the “documentation” is anything but clear … it’s actually quite confusing. Here are […]

who has experience with integrated circuit analog mixed signal at nm scale CMOS?

is there anyone ic design expert who has experience with integrated circuit analog mixed signal at nm scale CMOS?

Strange Resistance Reading in Autonomous Tracked Robot Circuit

Hello guys, Recently, I have been building a tracked robot that moves autonomously (avoiding obstacles, etc.). I bought new components that I soldered onto my prototyping board. Before coding, I […]

What is the Optimal Electrode Shape for Non-Contact Water Level Sensors in a Coffee Machine?

I am trying to design an automatic water filling system for my coffee machine. I need to design and make two non-contact non-immersion level sensors for the water tank. Ideally […]

What type of circuitry we use to convert 3.3 to 5v dc?

newbie question – what type of circuitry we use to convert 3.3 to 5v dc? i want it for my flight controller

Seeking Feedback and Improvements for My New Design – Suggestions Welcome!

Hi all,this is my new design,Im open to any insights of making better designs than this.If you can locate some issue,please help

ESP8266 Relay Stays On – Why Won’t It Turn Off?

Hi, I bought a kit on Amazon that I’m trying to control with an ESP8266. I’ve successfully uploaded the code to the ESP8266 and can monitor the readings from a […]

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