3.3 V-powered pH and ORP probe interface using an ADS1115 module, MCP6002 through-hole buffers, and DS18B20 temperature sensing. External ESP32 connection is through one 5-pin header carrying 3V3, GND, SDA, SCL, and DQ; ADS1115 ADDR is fixed locally and ALERT is unused.

Welcome to your new project. Imagine what you can build here.

Through-hole 9V NE555 astable timer circuit that blinks a red LED about once per second using a battery and on/off switch.

Welcome to your new project. Imagine what you can build here.

Hand-solderable 9V battery powered 555 timer circuit that blinks a red LED once per second through an on/off switch.

DIP-20 is a through-hole package with 20 pins arranged in two rows spaced 7.62mm apart. The body of the package is typically 27.94mm long and 10.16mm wide. DIP-20 is commonly used for a variety of integrated circuits and other electronic components. 20-DIP #part #template

Naze 32 Revision 6 Flight Controller Schematic At the heart of the Naze32 is a 32bit ST micro work horse of a processor, with untapped memory and cpu power and a host of equally impressive sensors. The Naze is also matched up with some of the nicest GUI programs and features to get the most out of your configuration. Naze32 rev6 Features: USB on right side PPM/PWM input as through-hole 3.3V, I2C on standard-size headers Fully pinout compatible with rev5 accessories (OSDoge etc) SBUS Inverter Spectrum satellite MPU6500 Sonar pads w/resistors added for direct connection to 5V sonar All extra pads (FT, GP, A5) on top, only sonar on bottom BMP280 barometer 16mbit flash Guide: https://www.dronetrest.com/t/naze-32-revision-6-flight-controller-guide/1605

Crystal Resonator in HC-49/US HC-49US package through-hole DIP #generic-part-template #tht

DIP-20 is a through-hole package with 20 pins arranged in two rows spaced 7.62mm apart. The body of the package is typically 27.94mm long and 10.16mm wide. DIP-20 is commonly used for a variety of integrated circuits and other electronic components. 20-DIP #part #template

DIP-20 is a through-hole package with 20 pins arranged in two rows spaced 7.62mm apart. The body of the package is typically 27.94mm long and 10.16mm wide. DIP-20 is commonly used for a variety of integrated circuits and other electronic components. 20-DIP #part #template

Naze 32 Revision 6 Flight Controller Schematic At the heart of the Naze32 is a 32bit ST micro work horse of a processor, with untapped memory and cpu power and a host of equally impressive sensors. The Naze is also matched up with some of the nicest GUI programs and features to get the most out of your configuration. Naze32 rev6 Features: USB on right side PPM/PWM input as through-hole 3.3V, I2C on standard-size headers Fully pinout compatible with rev5 accessories (OSDoge etc) SBUS Inverter Spectrum satellite MPU6500 Sonar pads w/resistors added for direct connection to 5V sonar All extra pads (FT, GP, A5) on top, only sonar on bottom BMP280 barometer 16mbit flash Guide: https://www.dronetrest.com/t/naze-32-revision-6-flight-controller-guide/1605

Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, through-hole passives, and a PP3 battery holder.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, through-hole passives, and a PP3 battery holder.

Compact surface-mount production variant of the fixed-function, crystal-referenced low-power burst timer. Electrically equivalent to the through-hole version where practical, with selectable interval, duration, carrier frequency, AUTO/TEST mode, ENABLE output, and gated OSC_OUT; no MCU, firmware, PLL, VCO, or programmable logic.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, through-hole passives, and a PP3 battery holder.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, an on/off switch, and through-hole support components for approximately one blink per second.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable circuit, an on/off switch, and through-hole components.

Through-hole 9V battery-powered 555 timer circuit that blinks a red LED about once per second through an on/off switch.

Breadboard adapter for the Moddo pinch: a 2×8 1.27 mm through-hole center header broken out to 2.54 mm through-hole headers on an 18 × 15 mm, 2-layer PCB.

Small breadboard-friendly breakout/carrier PCB for the Moddo pinch SAMD11 dev board, converting its 16-pin 1.27 mm header to 2.54 mm through-hole breakout pins. Mechanical dimensions are marked verify-against-hardware until Moddo publishes official drawings.

Through-hole 9V analog guitar stompbox PCB with fixed wet-path EQ, passive dry/wet mix, clean boost, TL074 op-amps, offboard controls, and 100 × 60 mm two-layer layout target.

ESP32-C3 battery-powered pH and ORP probe interface using ADS1115 differential ADC, MCP6002 through-hole buffers, DS18B20 temperature compensation, and short net labels for firmware handoff.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable oscillator, on/off switch, and through-hole components.

Motherboard for a camera gimbal system using off-the-shelf modules where practical, including Wiznet Pico W5500, UART-to-RS232, power supply modules, and BaseCam SimpleBGC 32-bit Extended. Design preference is mostly through-hole modules/connectors with surface-mount support components as needed.

Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, and through-hole support components for approximately one blink per second.