https://www.protechtrader.com/community-video?showcase_id=1&variant=demohttps://www.protechtrader.com/image/data/community/7aad3127505765b3959eee8f0d96e308.jpegPink Keyboard Makes Electronics! — Widescreen project videoI made this circuit thingy to show you guys my pink keyboard Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_1_demo.mp42026-07-08T13:37:48-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=1&variant=shorthttps://www.protechtrader.com/image/data/community/7aad3127505765b3959eee8f0d96e308.jpegPink Keyboard Makes Electronics! — Vertical project videoI made this circuit thingy to show you guys my pink keyboard Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_1_short_9x16.mp42026-07-08T13:37:48-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=2&variant=demohttps://www.protechtrader.com/image/data/community/25e163c9f46468b67958b5f085d6496b.jpeg2nd ed make electronics 7 segment display — Widescreen project videodecade counter issue Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_2_demo.mp42026-07-08T13:54:56-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=2&variant=shorthttps://www.protechtrader.com/image/data/community/25e163c9f46468b67958b5f085d6496b.jpeg2nd ed make electronics 7 segment display — Vertical project videodecade counter issue Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_2_short_9x16.mp42026-07-08T13:54:56-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=3&variant=demohttps://www.protechtrader.com/image/data/community/555_timer_metronome_hero_1787022465.jpg555 Timer Metronome for Guitar Practice — Widescreen project videoBuilt an adjustable 555 timer astable circuit with a potentiometer controlling tempo and a small speaker for click output. Started as the book's basic blinker experiment, then swapped the LED output for a transistor-driven speaker and added a 10-turn pot so I could dial in exact BPM ranges. Next step is adding a second 555 in monostable mode to shape the click into a sharper transient instead of a raw square wave. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/555_metronome_demo.mp42026-04-09T12:15:33-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=3&variant=shorthttps://www.protechtrader.com/image/data/community/555_timer_metronome_hero_1787022465.jpg555 Timer Metronome for Guitar Practice — Vertical project videoBuilt an adjustable 555 timer astable circuit with a potentiometer controlling tempo and a small speaker for click output. Started as the book's basic blinker experiment, then swapped the LED output for a transistor-driven speaker and added a 10-turn pot so I could dial in exact BPM ranges. Next step is adding a second 555 in monostable mode to shape the click into a sharper transient instead of a raw square wave. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/555_metronome_short_9x16.mp42026-04-09T12:15:33-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=4&variant=demohttps://www.protechtrader.com/image/data/community/tc_showcase_event_counter.jpgTwo-Digit Arduino Event Counter with CD4026 — Widescreen project videoChained two CD4026 decade counters together using the carry-out pin to build a two-digit 7-segment counter that increments on a push-button press with basic debounce handling in code. Used it to count laps during a hallway robot race with my kids. Reset button wired to pin 15 clears both digits back to zero instantly. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_4_demo.mp42026-04-22T18:40:07-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=4&variant=shorthttps://www.protechtrader.com/image/data/community/tc_showcase_event_counter.jpgTwo-Digit Arduino Event Counter with CD4026 — Vertical project videoChained two CD4026 decade counters together using the carry-out pin to build a two-digit 7-segment counter that increments on a push-button press with basic debounce handling in code. Used it to count laps during a hallway robot race with my kids. Reset button wired to pin 15 clears both digits back to zero instantly. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_4_short_9x16.mp42026-04-22T18:40:07-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=5&variant=demohttps://www.protechtrader.com/image/data/community/light_activated_nightlight_her_1787022558.jpgLight-Activated Nightlight Using an LDR and Transistor — Widescreen project videoSimple photoresistor voltage divider feeding a transistor base that switches on a string of LEDs once ambient light drops below a threshold. No microcontroller involved — fully analog. Mounted the LDR facing a window so it automatically turns the LED strip on at dusk and off again at sunrise. Tuned the threshold by swapping the fixed resistor value a few times until the trigger point felt right for the room. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_5_demo.mp42026-05-05T09:22:51-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=5&variant=shorthttps://www.protechtrader.com/image/data/community/light_activated_nightlight_her_1787022558.jpgLight-Activated Nightlight Using an LDR and Transistor — Vertical project videoSimple photoresistor voltage divider feeding a transistor base that switches on a string of LEDs once ambient light drops below a threshold. No microcontroller involved — fully analog. Mounted the LDR facing a window so it automatically turns the LED strip on at dusk and off again at sunrise. Tuned the threshold by swapping the fixed resistor value a few times until the trigger point felt right for the room. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_5_short_9x16.mp42026-05-05T09:22:51-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=6&variant=demohttps://www.protechtrader.com/image/data/community/tc_showcase_rgb_lamp.jpgArduino RGB Mood Lamp with PWM Fading — Widescreen project videoUsed three PWM pins to drive a common-cathode RGB LED through individual current-limiting resistors, with a sketch that smoothly cycles through color combinations using analogWrite ramps instead of hard color jumps. Housed it in a frosted plastic cup for diffusion. Learned a lot about how PWM duty cycle timing actually creates the fade effect while building this. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_6_demo.mp42026-05-19T20:03:44-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=6&variant=shorthttps://www.protechtrader.com/image/data/community/tc_showcase_rgb_lamp.jpgArduino RGB Mood Lamp with PWM Fading — Vertical project videoUsed three PWM pins to drive a common-cathode RGB LED through individual current-limiting resistors, with a sketch that smoothly cycles through color combinations using analogWrite ramps instead of hard color jumps. Housed it in a frosted plastic cup for diffusion. Learned a lot about how PWM duty cycle timing actually creates the fade effect while building this. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_6_short_9x16.mp42026-05-19T20:03:44-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=7&variant=demohttps://www.protechtrader.com/image/data/community/servo_motor_test_rig_hero_1787022591.jpgPotentiometer-Controlled Servo Test Rig — Widescreen project videoWired a 10K potentiometer to A0 and mapped the analogRead range to servo angle using the map() function, so turning the knob directly drives a small hobby servo in real time. Built this as practice before starting a bigger robotic arm project. Added a 10-sample moving average to the analog read to smooth out servo jitter, which fixed the twitching almost completely. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_7_demo.mp42026-06-01T15:47:12-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=7&variant=shorthttps://www.protechtrader.com/image/data/community/servo_motor_test_rig_hero_1787022591.jpgPotentiometer-Controlled Servo Test Rig — Vertical project videoWired a 10K potentiometer to A0 and mapped the analogRead range to servo angle using the map() function, so turning the knob directly drives a small hobby servo in real time. Built this as practice before starting a bigger robotic arm project. Added a 10-sample moving average to the analog read to smooth out servo jitter, which fixed the twitching almost completely. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_7_short_9x16.mp42026-06-01T15:47:12-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=8&variant=demohttps://www.protechtrader.com/image/data/community/tc_showcase_dc_motor.jpgSimple DC Motor Speed Controller with Transistor + Diode — Widescreen project videoBuilt a basic PWM-driven motor speed controller using an NPN transistor switch with a flyback diode across the motor terminals, controlled from an Arduino PWM pin. First attempt without the diode caused the Arduino to reset randomly whenever the motor spun down, which turned out to be back-EMF feeding into the board through a shared ground path. Adding the 1N4001 flyback diode fixed the resets completely. Watch the widescreen version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_8_demo.mp42026-06-14T11:29:58-04:00yesProTechTraderhttps://www.protechtrader.com/community-video?showcase_id=8&variant=shorthttps://www.protechtrader.com/image/data/community/tc_showcase_dc_motor.jpgSimple DC Motor Speed Controller with Transistor + Diode — Vertical project videoBuilt a basic PWM-driven motor speed controller using an NPN transistor switch with a flyback diode across the motor terminals, controlled from an Arduino PWM pin. First attempt without the diode caused the Arduino to reset randomly whenever the motor spun down, which turned out to be back-EMF feeding into the board through a shared ground path. Adding the 1N4001 flyback diode fixed the resets completely. Watch the vertical version of this electronics project video.https://www.protechtrader.com/image/data/community/instructables/showcase_8_short_9x16.mp42026-06-14T11:29:58-04:00yesProTechTrader