Unravel the Mystery of Electronics
Soldering required. Check the supplied parts and board revision.
Listing specifies 5-volt direct current. Soldering required; battery and glue not included.
Breadboard, wires and assorted parts. Arduino controller board not included.
Surface-mount soldering practice. Battery and battery holder not included.
Clock-and-case project kit. Soldering required; check included parts and power requirements.
Soldering and assembly required. Check battery and track requirements before buying.
Tricky Circuit may earn a commission through these links. Product ideas have not been bench-tested by Tricky Circuit and are not verified lesson parts lists.
Decode a mechanical rotary encoder with Pico using a quadrature transition table. Count complete cycles, reject impossible jumps and expose missed edges.
Read a 10 kฮฉ NTC thermistor with Pico. Derive resistance from a divider, estimate temperature and recognize open-circuit and short-circuit readings.
Build an ESP32 plant reminder using a SEN0193 capacitive soil sensor. Calibrate local dry and wet references and add hysteresis without inventing accuracy.
Diagnose a low AMS1117 output with a bounded resistor load. Compare source-path loss and headroom, calculate heat and record evidence without forcing thermal shutdown.
Use a Pico analog input and three resistors to distinguish a closed contact, open contact, short and disconnected cable. Includes fault-injection tests.
Compare SMD291 and 8341 as extra flux in a balanced hand-soldering experiment. Read the real datasheets, control the process and record honest results.
Build a reed-switch door reminder with an ATtiny85. Understand contact bounce, timer ticks and a 30-second delay with complete C firmware.
Diagnose MG995 or MG996R twitching with separate servo power, a fixed-command Arduino test, measured voltage checks and a deliberate command-dither comparison.
Record room temperature with Raspberry Pi and a DS18B20. Includes 3.3 V wiring, Linux 1-Wire setup and Python CSV logging with error handling.
Wire a flyback diode correctly across a 5 V relay coil. Follow the switch-off current path and calculate a transistor driver for a small relay.
Explore these do-it-yourself project kits. Check the selected option, included parts and instructions on each offer.
Tricky Circuit may earn a commission if you buy through these Temu affiliate links. These are product ideas; they have not been bench-tested by Tricky Circuit and are not verified lesson parts lists.
Supplier product photo
Soldering required. Check the supplied parts and board revision.
Supplier product photo
Listing specifies 5-volt direct current. Soldering required; battery and glue not included.
Supplier product photo
Breadboard, wires and assorted parts. Arduino controller board not included.
Supplier product photo
Surface-mount soldering practice. Battery and battery holder not included.
Supplier product photo
Clock-and-case project kit. Soldering required; check included parts and power requirements.
Supplier product photo
Soldering and assembly required. Check battery and track requirements before buying.
