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.
Build an LM393B light switch with two calculated thresholds. Include pull-up and LED loading, check input limits and demonstrate hysteresis with known resistors.
Build a low-current 3.3 V MCP1700 battery supply. Measure regulation and dropout with known loads, check capacitor requirements and calculate heat.
Read two DS18B20 sensors on one Pico pin. Keep physical channel names tied to ROM IDs and report missing sensors, CRC errors and reset ambiguity.
Build a Raspberry Pi SQLite log that keeps the latest readings, separates sensor errors from zero and rolls back interrupted transactions.
Build a 5 V CD4017 light sequencer with a TLC555 clock. Calculate timing and LED current, test reset and discover how inhibit can add a count.
Build a button conditioner with TI SN74HC14N. Calculate unequal press and release delays, measure hysteresis and test the limits of RC debounce.
Monitor four low-voltage nodes with a Pico and ADS1115. Build separate input dividers, calibrate each channel, and see why sequential readings differ in time.
Build a battery-powered Pico meter for 0–12 V DC, resistance and continuity. Learn input loading, calibration and fault handling with complete code.
Read resistor colour bands, resolve the reading direction, calculate tolerance, and check loose resistors with a meter. Includes examples and common traps.
Inspect a 3.3 V I2C test bus before scanning. Separate missing acknowledgements from stuck lines, demonstrate address collisions and attempt bounded open-drain recovery.
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.
