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TL431 Multivibrator ESP-12 DIY Dev Board Metal Earth Lead Guitar Single-cell Charge/Boost Board Schmitt Switch Debouncer Power OK Indicator AC Line Detector ESP-12 Programming Ted's LED Clock PIC16F84A Blinky ATtiny SSD1306 I²C SSD1306 OLED Bareback I²C ATtiny Pin Change Interrupts ATtiny IxpandO SSD1306 With u8g v2 Metal Detector Kit Simple Sound Effects 2 Lucky 4D Printer JP-QR701 Thermal Printer Basics Remote Doorbell CK9561 Audio Effects Chip Continuity Tester PPTC Performance Lipo Tester Module 555 Timer Fixed-duty VFO ZX2031 FM Radio Kit FM Converter Subtraction Loop Counter Kit Simple USB Dummy Load Greater Simple Sound Effects Bridge Doubler Split Supply USB to RS-232 Adapter MAX3232 RS232 to TTL Module Using mDNS Single-stage Delay Switch Learning PCBmodE Rakit Baby8 Sequencer INA226 High-side Monitor Basics imaxRC B3 Lipo Charger LiitoKala Lii-202 Smart Charger Single-cell Lithium Charger RFID Concentration Game HS088 Low-voltage Amplifier Tesla Coil Plasma Speaker Kit Publishing Internals ESP32 Getting Started Negative Feedback Amplifier Fomu Build Notifier Getting Started with Fomu Kicking Back Magnet-switched Solenoid 555 Falling Edge Detector 555 Rising Edge Detector XOR-RC Edge Detector Crystal-locked 1kHz Oscillator Using C++ Templates RFID Card Counter Crystal-Locked 455 kHz AM Oscillator WyLed Electret Sound-level Trigger TM1638 7-Segment LED Driver 7-Segment LED Displays LedControl MAX7219 7-Segment LED Driver Raw MAX7219 7-Segment LED Driver Rakit Drum Synth Simplest Direct FM Receiver ANG860B BJT White Noise Generator xdiskclk CapacitiveDropper Fluorescent Ring LED Replacement Simple Crystal AM Transmitter LM386 Audio Amp Duplex Tuning Capacitor Two-stage FM Transmitter VC3165 MrBiJuT Single Transistor AM Transmitter Transconductance Amplifiers HX108-2 Goblin CANary TwinTeeOscillator FastAnalogRead PrecisionTimer BoldportClub/pease-out PiezoBuzzers VoltageReference/ADR4540 PotModules CD4046/MainsLinkedPLL ArcGeneratorKit LCR45 AudioEffects/Parrot LTC2400 BoldportClub/capacimeter RGB Joule Thief Night Light VariableDutyCycle/ControlAdjust VariableDutyCycle/DiodeSteering BluePill 16x2 LCD BoldportClub/respot Pollen8 DataLogging/VoltageToAdafruitIO QX5252SolarNightLight RFID Device Dumper QX5252JouleThief Vivian BEAM BoldportClub/krell AdjustablePowerSupplyKit StepperMotors/ULN2003Module StepperMotors/28BYJ48 BipolarWormDrive/SimpleHBridge 3x7/PomodoroTimer 3x7 LRThreeDigitDemo ATtiny Software PWM 3x7 RippleTester BoldportClub/3x7 TheToneRanger MakerUno LaserTapeMeasure LimeSDR First Look CuttleTalk BoldportClub/lite2sound-bc CommonEmitterHartley SimpleSamplePlayer LineFollowerKit Nixie Power Supply - 555 Timer Version Decade Programmable Resistor Rotary Encoder Tester BJT Comparator BoldportClub/cordwood-three HomopolarJouleThiefBlinky BoldportClub/conehead BBBreakout DPS3005BenchPowerSupply Custom CH340G USB to UART interface ATmegaSerialProgrammer Arza-matron GY560 BoldportClub/pips Pixie USBProtector AT89C2051/LedChaser LCD I2C Adapter I2CScanner CapacitiveTouchOrgan AT89C2051/Blinky AT89C2051/Programmer DicksonChargePump BoldportClub/whiteboard MilliVoltmeterDIY PCB and Enclosure PIC/GettingBlinky/UsingC Two-stage Common Emitter Amplifier SingaporeBands GpsBasics BluePill BoldportClub/widlar LM723/HighVoltageRegulator LM723/LowVoltageRegulator CD4046 VCO WaterQualityMonitor Tin Counter AS3935 BJT Phase Splitter Nokia 5110 Shield PiezoVibrationDetector ThreeTransistorShortWaveReceiver VoltageReference/LT1019 PX835 Audio Effects Chip MilliVoltmeterDIY CommonEmitterAmplifier DigitaSwitch/TS3A5018 BoldportClub/ananas GranularSynth nRF24/Scanner Lcd5110/AdafruitSoftwareSPI Lcd5110/AdafruitHardwareSPI ClassicNokia BoldportClub/binco H83A Audio Effects Chip TFT/Color128x128 TL431/ShuntRegulator HS088 Audio Effects Chip MC34063/ModuleKit BoldportClub/TheMonarch PX088A Audio Effects Chip Snow Flake SpiderBot DFlipFlop Decoding ACARS RTL-SDR Dongle LiteWings stringy/DemoBurner DLatch RF Connectors SRLatchWithNandGates BoldportClub/mostap ESP8266/micropython/GettingStarted ESP8266/Sensors/DHT11 ESP8266/MorseBlinky UsbPowerSupplyKit BoldportClub/IxpandO DelayKit GlowBall RgbLedGlow Oscillators/ComparatorRelaxation MCP2200/Chaser MCP2200/DevKit VoltageSelfMeasurement RCPhaseShiftBJT PIC/GettingBlinky Power/Any2AnyPowerPack PowerConnectors VoltageControlledOscillator/555 Mixers/RFDiodeRing Mixers BoldportClub/spoolt Labrador BoldportClub/stringy BoldportClub/cordwood-too/FidgetCube BoldportClub/cordwood-too Synchronous JK Counter DigitalLogicClock Bistable Discrete Schmitt Trigger BoldportClub/QSOPBreakout MT3608/VariableBoost EEPROM/AT28C16/PEProgrammer MCP23S17 TheMatrix/Firecracker BoldportClub/Juice TEA5767 FM Receiver AudioConnectors LED7Segment/CombinationalLogicDriver TheMatrix/KeypadControl KeyboardMatrixModule/SwitchInterrupts KeyboardMatrixModule/LedControl KeyboardMatrixModule/KeyMatrixInput KeyboardMatrixModule TheMatrix/GameOfLife DHT11/Basics TheMatrix/LedTest BoldportClub/TheMatrix GoldenHind CD4070/Oscillator SolarPendulum FrequencyCounterKit CD4060/CrystalOscillator CD4060/RCOscillator H823 Audio Effects Chip CD4060/MusicLightKit BoldportClub/PissOff Voltmeter/Ammeter Module BasicInvertingBuckBoostAvrControl UltrasonicAlarm SwitchPowerNFET BoldportClub/tap BoldportClub/TheGent XorWithNandGates FunctionGeneratorKit ThreeStageTransmitter BreadboardTransmitter Single-stage FM Transmitter Kit 2 ComponentTesterKit BoldportClub/Touchy VariableFrequencyRunwayLEDs ATtiny at 8MHz FY3200S VoltageControlledOscillator Saike909D BoldportClub/cordwood/tuner BoldportClub/cordwood/aanimate BoldportClub/cordwood ChainBlocks Cuttle Scope Tag BoldportClub/TheCuttle XYplotter DigitalPots/MCP42010 BoldportClub/ligemdio BazzFuss DigitalPots/MCP4017 SaleaeLogic DigitalPots/M62429 ClapSwitchKit2 BoldportClub/Emergency BoldportClub/Pease AvrHardwarePWM/ATtiny AvrHardwarePWM ATtiny Programming Shield MessageWaiting BoldportClub/TheLady pedalShieldUno/AudioDSP TDA2050 Guitar Practice Amp PierceGateOscillator pedalShieldUno CMOS Oscillators GeneralCurveTracer Switches/DPDT Switches PierceOscillator GeneralPurpose358 DigitalInputWithAnalogPins AudioDSP/SuperCrunch AudioDSP/Crunch AudioDSP/Distortion AudioDSP/Boost AudioDSP CMOSInverterOscillator PWM/GeneralPurposeHighSideController LEDDimmer/555PWM LEDDimmer/CurrentRegulator MinimalLCOscillator Dice TransistorCurveTracer KnightRider MusicBoxKit FQ777-954/TearDown LEDStrobeKit Fritzing Parts StairStepGenerator ResistorTransistorLogic/XOR AVR GCC Toolchain DS18S20/OneWireReading MPU6050/AccelGyroTest BasicBuckAvrControl OSHChip/LEDx16Module OSHChip/YottaToolchain OSHChip/GccToolchain OSHChip/blinky StayCreative BuckConverterModules TDA7297 Audio Amp Kit LedPanelDisplay72R02 Single-stage FM Transmitter Kit FrequencyCounter CD4047/AstableOscillator TriacDimmer TemperatureLoggerTypeK HomopolarMotor AudioLevelIndicatorKit 555 Timer Doorbell Kit Solenoid Motor LED7Segment/CD4026BucketBrigade Hall Effect Switch WienBridgeAudioToneGenerator LED7Segment/CD4026Drive LCResonator ESP8266/DIYDevBoard PovShakeStickKit Sagrada Família Low-voltage Glowing LEDs MultiSlaveSPI LED7Segment/ShiftDriveSPI EEPROM/AT24C02/BasicReadWrite nRF24/PingPong Asynchronous JK Counter StirlingEngineHB13 AdjustablePulseGenerator PolarityTester PowerSupply317Kit VoltmeterModule ColpittsOscillator LEDx16Module LED7Segment/ShiftDriveModule LED7Segment/ShiftDrive nRF24Breakout SwitchSoftLatch UsbNotifier LEDCubes/Mini4 SCRLatch SMDPracticeBoards ClapSwitchKit RGBLedModule CurrentSensorModule VoltageSensorModule DS3231RTC/TimeDemo Power2662Inverter Watson LED Ring VariableSawtoothGenerator BoostBuckConverterModule ML741/NonInvertingAmplifier LM324/SplitterBuffer ML741/InvertingAmplifier ML741/Inverter ML741/VoltageFollower MSO5074FG_unboxing ESP8266/SerialTest/ruby ESP8266/SerialTest PowerAMS1117 LD1117 Regulator ML741/Comparator ML741 Lcd5110/JuliansU8glibDemo AD9833/BasicDemoCycle VoltageDoublerChargePump InvertingChargePump Variable Duty-Cycle 555 Timer RingOscillator OpAmp AM Transmitter High-frequency OpAmp Oscillators CrystalTester BJT Zener-Mode Effects AnalogComparator BJT Monostable ToroidJouleThief CounterModule TouchSwitch/555 Bidirectional Level Shifter Module BidirectionalLevelShifter AMTransmitter/555 AM/FM Radio Kit DarlingtonTouchSwitch RelaxationJouleThief ATtiny TotalSleep ATtiny SleepMode ATtiny Hardware Interrupt Voice Level Indicator Kit RFDetectorProbe HX6B OpAmpTimer Peak Detector Simple Peak Detector RotaryEncoderModule RotaryEncoderMethods Solenoid DIY Switch - NJFET R2RDAC NORGateOscillator TTLBufferDriver ResistorTransistorLogic/OR ResistorTransistorLogic/NOR DiodeLogic/AND DiodeLogic/OR RingCounterController RingCounter Switch - PFET BJT SawTooth Ruby 8x8 LED Matrix LedControl SolenoidControl 8x8 LED Matrix Raw Drive ArdWinVaders ATmegaISPShield GuitarHeadphoneAmp VolumeControlPowerAmp Smokey LittleGem/A386 BJT LongTail Pair BJT CurrentSink Power317CC Switch - PJFET PlotNValues BreatheLamp ElectronicClockKit SSD1306 OLED Bareback SPI SSD1306 OLED With AdaFruit Libraries Lcd5110/BareBack RouletteKit Transistor Tester MobileRFDetectorKit Led4Digit7Segment/DoubleShiftWithFETs Led4Digit7Segment/DoubleShift LedTemperatureDisplay Led4Digit7Segment/SingleShift SRLatchWithNorGates MonostablePulseExtender Monostable 74LS122 TestIR QuadNOR NOR7402 TinyBlink ATtiny Programming over ArduinoISP ATmegaBreadboard ATmegaViaArduinoISP LED AC Bulb Switch - NFET LevelIndicatorLM3915 ASK RF Switch RFSwitch SRLatchFlipper SRLatch 5V Breadboard Regulator Two-tone Doorbell Led4Digit7Segment CapacitanceTester JoystickServoControl RelayControlTest RelayModuleTest FunctionGenerator324 Comparator741 El Jarabe Tapatío Girabot BJT RC Oscillator StereoLightTrigger LDRStereoTripDetector MotorControlPWM SimpleSiren SimpleChime HitTheLights ServoTest Shifty MeLEDy Square Wave - LM324 ElectretADC ElectretTrigger NonInverting324 RangeFinder LDRComparator Switch - PNP Switch - NPN Triangle Wave - 555 BlinkPrecision PowerZener PowerMB102 Power7805 Power317 Quad Latch ResistorTransistorLogic/AND ResistorTransistorLogic/NAND Square Wave - Schmitt Schmitt Inverter Arduino Internals Popcorn FretBoard Monostable Square Wave - 555 StripTease AsyncLedStripEffects ResistorTransistorLogic/NOT Capacitorial X113647StepperLibrary LightOrNot Blink RGBCalibrate LEDArrayDemos It's Better With Bacon HeartQuotes Pushbutton LED switch LEDChaser Variable LED brightness with PWM LED7Segment/DirectDrive