Build a real-time ESP32 GPS Tracker with SIM800L & NEO-6M Module. Track vehicles, assets via GSM with this complete DIY IoT project featuring code, circuit diagram & testing guide.
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Category: Microcontrollers Tags:
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Clocked JK Flip Flop: Working, Truth Table, and Circuit Design Guide
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Learn how clocked JK flip-flops work with truth tables, timing diagrams, and circuit designs. Understand toggle, set, and reset operations for digital logic applications.
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DIY UWB Indoor Positioning System using ESP32 and Qorvo DWM3000
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Build a DIY USW indoor positioning system using ESP32 with the Qorvo DWM3000. This tutorial walks you through hardware, firmware, and Python visualisation to create accurate tracking for robotics and IoT projects.
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Wearable Air Quality Monitor Pendant using STM32 and SGP40 Sensor
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Build a smart wearable pendant that tracks air quality with STM32 and SGP40 sensors, alerting users through LEDs and buzzer notifications for real-time environmental awareness.
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Wireless ESP32-Based Stepper Motor Driver with TMC2240
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Learn how to build a wireless stepper motor controller using an ESP32-S3 and TMC2240 driver. This detailed tutorial guides you through wiring, custom PCB design, USB-C PD power management, closed-loop control with an AS5600 encoder, and a browser-based UI with real-time status and RGB feedback. Includes Gerbers, BOM, and full source code.
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Interfacing ESP32 with Thermal Printer using UART ESC/POS
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Technical guide to interfacing ESP32 with thermal printers (PNP-500/RS203) over UART. Explains hardware wiring, power considerations, and implementation of ESC/POS commands for printing text, images, barcodes, and QR codes. Includes detailed circuit diagrams and Arduino code on GitHub.
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Boot Raspberry Pi from USB without SD Card Required
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This hands-on tutorial explains how to ditch unreliable SD cards and boot your Raspberry Pi models 3B, 3B+, 4, and 5 directly from USB or NVMe. It covers setting up USB-boot for each model—from enabling OTP on Pi 3B to updating EEPROM on Pi 4 and using native USB/PCIe boot on Pi 5, boosting speed, reliability, and convenience.
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Build a Cellular GPS Tracker with Raspberry Pi Pico SIM800L
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This step-by-step tutorial walks you through creating a real-time GPS tracker using the budget-friendly Raspberry Pi Pico microcontroller, Neo 6M GPS receiver, and SIM800L GSM module. Learn circuit wiring, Arduino IDE setup, GeoLinker cloud integration, and offline buffering to ensure reliable IoT tracking anywhere.
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Understanding SR Latches: Set-Reset Latch, Gated & Clocked Versions
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Learn the basics of the SR latch, Set-Reset memory circuit, in digital electronics. This tutorial covers truth table, NOR/NAND implementations, gated and clocked variants, and working principles.
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Clocked SR Flip Flop: Complete Guide with Circuit and Truth Table
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Learn how to build a clocked SR flip-flop using NAND gates. Understand its working principle, truth table, and circuit diagram for designing stable digital memory and control logic circuits.
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