corpus.blog
41554 blogs · [ { "id": "01a08762-2b5b-70e0-9503-8e9f0dc69019", "title": "Quick & Easy Voltage Regulators", "url": "https://www.codrey.com/electronics/quick-and-easy-voltage-regulators/", "published_at": "2025-05-27T04:51:41+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f0eae766d", "title": "Midget Tone Generator", "url": "https://www.codrey.com/electronic-circuits/midget-tone-generator/", "published_at": "2025-05-19T05:56:09+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f0eb3a5f0", "title": "Isolated Voltage Monitors", "url": "https://www.codrey.com/electronic-circuits/isolated-voltage-monitors/", "published_at": "2025-05-17T06:11:29+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f0f307501", "title": "Cupboard Light DIY", "url": "https://www.codrey.com/electronic-circuits/cupboard-light-diy/", "published_at": "2024-12-02T03:28:41+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f1017e218", "title": "Flashing LED Float", "url": "https://www.codrey.com/electronic-circuits/flashing-led-float/", "published_at": "2024-11-28T05:52:39+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f108f5131", "title": "LED Exit Sign", "url": "https://www.codrey.com/electronic-circuits/led-exit-sign/", "published_at": "2024-10-23T05:59:32+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f10ab0431", "title": "High Water Sensor", "url": "https://www.codrey.com/electronic-circuits/high-water-sensor/", "published_at": "2024-08-25T12:17:01+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f10e789b1", "title": "Variable Zener Diode DIY", "url": "https://www.codrey.com/electronics/variable-zener-diode-diy/", "published_at": "2024-07-11T04:34:56+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f117288e4", "title": "Lighted Cone Marker", "url": "https://www.codrey.com/electronics/lighted-cone-marker/", "published_at": "2024-06-13T05:24:30+00:00" }, { "id": "01a08762-2b5b-70e0-9503-8e9f11bb93a1", "title": "Ultrasonic Proximity Sensor Arduino", "url": 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"title": "Poor man’s Car Power Probe", "url": "https://www.codrey.com/electronic-circuits/poor-mans-car-power-probe/", "published_at": "2023-07-20T05:36:36+00:00" }, { "id": "01a0c540-9c8a-7153-af43-6a503523c935", "title": "BBC micro:bit Dark-Activated LED Badge", "url": "https://www.codrey.com/electronics/bbc-microbit-dark-activated-led-badge/", "published_at": "2023-07-17T04:01:06+00:00" }, { "id": "01a0c540-9c8a-7153-af43-6a5035a6bdda", "title": "741 Op-Amp Cookbook for Beginners (v1)", "url": "https://www.codrey.com/electronics/741-op-amp-cookbook-for-beginners-v1/", "published_at": "2023-07-12T04:45:23+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff6e485fbd", "title": "Safe Car Power Socket v1", "url": "https://www.codrey.com/electronics/safe-car-power-socket-v1/", "published_at": "2023-07-08T05:27:08+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff6f27291a", "title": "Improved Door Security Monitor Switch", "url": "https://www.codrey.com/electronics/improved-door-security-monitor-switch/", "published_at": "2023-07-05T03:33:21+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff6ffb8138", "title": "hFE Test Connector/Adapter for Analog Multimeter", "url": "https://www.codrey.com/electronics/hfe-test-connector-adapter-for-analog-multimeter/", "published_at": "2023-07-03T04:46:14+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff706b161d", "title": "Poor man’s Transistor Beta (hFE) Tester", "url": "https://www.codrey.com/electronics/poor-mans-transistor-beta-hfe-tester/", "published_at": "2023-06-26T04:50:41+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff712ac3dc", "title": "A Hyper LED Switch", "url": "https://www.codrey.com/electronic-circuits/a-hyper-led-switch/", "published_at": "2023-06-22T05:21:15+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff71399d8e", "title": "An Eternal LED Blinker – DIY", "url": "https://www.codrey.com/electronic-circuits/an-eternal-led-blinker-diy/", "published_at": "2023-06-15T03:32:06+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff71b5abbe", "title": "Poor man’s 500kHz Oscillator", "url": "https://www.codrey.com/electronics/poor-mans-500khz-oscillator/", "published_at": "2023-06-12T03:07:28+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff7247bb20", "title": "Toy/Hobby DC Motor Fun", "url": "https://www.codrey.com/electronics/toy-hobby-dc-motor-fun/", "published_at": "2023-06-05T00:59:52+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff728ca7cd", "title": "Another Junk Box Solar LED Candle", "url": "https://www.codrey.com/electronic-circuits/another-junk-box-solar-led-candle/", "published_at": "2023-05-30T04:06:56+00:00" }, { "id": "01a0c549-32ae-71f4-bf2c-29ff72fc003e", "title": "Water Activated LED Marker", "url": "https://www.codrey.com/electronic-circuits/water-activated-led-marker/", "published_at": "2023-05-22T02:41:19+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcc7a0a13", "title": "Arduino Magic Eye", "url": "https://www.codrey.com/learn/arduino-magic-eye/", "published_at": "2023-05-16T03:32:42+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcd3b15d5", "title": "OLED Display Splash Screen Primer", "url": "https://www.codrey.com/electronics/oled-display-splash-screen-primer/", "published_at": "2023-05-12T02:34:49+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcde89a41", "title": "Handheld Engraving Pen & A Little Hack", "url": "https://www.codrey.com/electronics/handheld-engraving-pen-a-little-hack/", "published_at": "2023-05-09T03:47:17+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bce25a162", "title": "A Makeshift Silicon Diode Temperature Sensor", "url": "https://www.codrey.com/electronics/a-makeshift-silicon-diode-temperature-sensor/", "published_at": "2023-05-03T03:31:28+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bce5b5336", "title": "BlinkyDuino – Arduino Fun for your STEM Kids", "url": "https://www.codrey.com/learn/blinkyduino-arduino-fun-for-your-stem-kids/", "published_at": "2023-04-27T03:33:38+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bce939734", "title": "Emitter Follower – A Quick Look", "url": "https://www.codrey.com/electronics/emitter-follower-a-quick-look/", "published_at": "2023-04-25T05:16:00+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcf436b33", "title": "The LED Photodiode Trick", "url": "https://www.codrey.com/electronics/the-led-photodiode-trick/", "published_at": "2023-04-19T05:44:01+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcf966aaf", "title": "Switch Debouncer – Hardware Guide", "url": "https://www.codrey.com/electronics/switch-debouncer-hardware-guide/", "published_at": "2023-04-17T01:47:25+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bcfc37883", "title": "LM385 Micropower Voltage Reference – Quick Bits", "url": "https://www.codrey.com/electronics/lm385-micropower-voltage-reference-quick-bits/", "published_at": "2023-04-07T05:56:55+00:00" }, { "id": "01a0c551-d1e9-7033-a683-b26bd00e6c3f", "title": "NE555 0-10S Delay Timer Relay Module", "url": "https://www.codrey.com/electronics/ne555-0-10s-delay-timer-relay-module/", "published_at": "2023-03-31T03:08:20+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76c3d7833", "title": "Poor man’s Luxury Car Dome Light", "url": "https://www.codrey.com/electronics/poor-mans-luxury-car-dome-light/", "published_at": "2023-03-23T05:43:53+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76c5a8109", "title": "Dual PC817 Optocoupler Module – Buy or Do It Yourself?", "url": "https://www.codrey.com/electronics/dual-pc817-optocoupler-module/", "published_at": "2023-03-17T03:58:10+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76cccde67", "title": "An Eternal LED Scarecrow", "url": "https://www.codrey.com/electronic-circuits/an-eternal-led-scarecrow/", "published_at": "2023-03-13T03:08:14+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76cd74613", "title": "Dual MOSFET Switch Module – WORTH IT OR NOT?", "url": "https://www.codrey.com/electronics/dual-mosfet-switch-module/", "published_at": "2023-03-07T04:46:28+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76d537574", "title": "Learn To Play with Ceramic Resonators", "url": "https://www.codrey.com/electronics/ceramic-resonators/", "published_at": "2023-03-03T13:36:45+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76da1e8bf", "title": "Self-Lock Delay Switch Module DIY", "url": "https://www.codrey.com/electronic-circuits/self-lock-delay-switch-module-diy/", "published_at": "2023-02-28T04:48:14+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76daeb506", "title": "Build Your Own Bicolor LED Waistband", "url": "https://www.codrey.com/microcontroller-projects/build-your-own-bicolor-led-waistband/", "published_at": "2023-02-27T02:52:23+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76dcef83f", "title": "Tricolor LED Signal Baton", "url": "https://www.codrey.com/arduino-projects/tricolor-led-signal-baton/", "published_at": "2023-02-20T14:19:07+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76e04e247", "title": "Multipurpose Power-Thrifty LED Flasher", "url": "https://www.codrey.com/electronic-circuits/multipurpose-power-thrifty-led-flasher/", "published_at": "2023-02-14T04:58:06+00:00" }, { "id": "01a0c55a-1209-73e3-b04a-e6e76e0d72f8", "title": "Universal Pulse Extender Module", "url": "https://www.codrey.com/electronic-circuits/universal-pulse-extender-module/", "published_at": "2023-02-10T04:37:24+00:00" } ] posts Claim your blog
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codrey.com

2025

Quick & Easy Voltage Regulatorsoriginal ↗
27 May 2025
Midget Tone Generatororiginal ↗
19 May 2025
Isolated Voltage Monitorsoriginal ↗
17 May 2025

2024

Cupboard Light DIYoriginal ↗
2 Dec 2024
Flashing LED Floatoriginal ↗
28 Nov 2024
LED Exit Signoriginal ↗
23 Oct 2024
High Water Sensororiginal ↗
25 Aug 2024
Variable Zener Diode DIYoriginal ↗
11 Jul 2024
Lighted Cone Markeroriginal ↗
13 Jun 2024
Ultrasonic Proximity Sensor Arduinooriginal ↗
5 Jun 2024
MH-SR602 PIR Motion Sensor Guideoriginal ↗
27 May 2024
Glowing LED Eyes & Jawa Dolloriginal ↗
21 May 2024
E-Reflector for Bicyclesoriginal ↗
9 May 2024
Phototransistor Secrets PT334-6Coriginal ↗
1 May 2024
Flickering Torch Bulboriginal ↗
24 Apr 2024
Quick Logic-Level MOSFET Testeroriginal ↗
19 Apr 2024
Mini Alarm Loop v1original ↗
16 Apr 2024
Do More with LM324 Operational Amplifier ICoriginal ↗
3 Apr 2024
Poorman’s Toilet Bowl/Seat Night-Light v1original ↗
25 Mar 2024
Door Status LED Indicatororiginal ↗
19 Mar 2024
Barn Light Watcheroriginal ↗
11 Mar 2024
Household 9V Battery Tester v1original ↗
8 Mar 2024
Electronic Chirping Cricket – STEM DIYoriginal ↗
4 Mar 2024
Another Fun Kids Noise Bomboriginal ↗
1 Mar 2024
LED Ice Cube DIYoriginal ↗
26 Feb 2024
Little LED Marker Light DIYoriginal ↗
22 Feb 2024
Steady Hand Game – STEMoriginal ↗
20 Feb 2024
Simple Arduino Psychedelic Lamporiginal ↗
16 Feb 2024
Qi Wireless Chargers & Funny LED Toysoriginal ↗
14 Feb 2024
Multipurpose LED Flashlight Teardownoriginal ↗
12 Feb 2024
Arduino Stepper Motor – A Quick Revisionoriginal ↗
6 Feb 2024
Relay & Electronics – A Quick Refresheroriginal ↗
31 Jan 2024
Little Noise Makers – A Quick Revisionoriginal ↗
25 Jan 2024
Programmable Gain Amplifier (PGA) – Random Talksoriginal ↗
22 Jan 2024
Simple CMOS Bilateral Switchoriginal ↗
17 Jan 2024
Adaptive Arduino Night-Lightoriginal ↗
10 Jan 2024
Touchless Live Wire Detector – STEM Funoriginal ↗
5 Jan 2024
Discrete Linear Voltage Regulator – Design Sparksoriginal ↗
4 Jan 2024
Photosensitive Bristlebot – STEM Editionoriginal ↗
2 Jan 2024

2023

Shunt Resistor Secretsoriginal ↗
20 Dec 2023
Soft Latch Switch – A Quick Refresheroriginal ↗
18 Dec 2023
LM35 Revisited – STEM Edition!original ↗
15 Dec 2023
DC-DC Boost Converter Primeroriginal ↗
12 Dec 2023
Another 555 Timer IC Electronic Latch Switchoriginal ↗
6 Dec 2023
Compact Police Siren – An Inside Lookoriginal ↗
4 Dec 2023
Mercury Tilt Switch Funoriginal ↗
1 Dec 2023
Arduino VCLED Flasher – Another Fun Project for STEM Kidsoriginal ↗
29 Nov 2023
Current Mirror Segments – Part 1original ↗
22 Nov 2023
Automotive SSR Module v1original ↗
15 Nov 2023
Automatic USB Mains Switch (v1)original ↗
13 Nov 2023
Handy Test Light (v1)original ↗
9 Nov 2023
6V Battery Guard Relay Moduleoriginal ↗
30 Oct 2023
CD4541 Programmable Timer IC Cheat Sheetoriginal ↗
23 Oct 2023
An Old School Transistor Shunt Regulatororiginal ↗
19 Oct 2023
5V Microcontroller Power Rail Guardoriginal ↗
11 Oct 2023
Doorbell Sensor IoT Module (v1)original ↗
2 Oct 2023
4V SLA Battery Chargeroriginal ↗
19 Sept 2023
Poor man’s AC230V Smart Plug v1original ↗
12 Sept 2023
Inverter Crystal Oscillators & A Half-Baked Projectoriginal ↗
6 Sept 2023
Mixtile Core 3588E system-on-module works with NVIDIA Jetson TX2 NX carrier boardsoriginal ↗
5 Sept 2023
Window Comparator Revisitedoriginal ↗
4 Sept 2023
Lazy LED Flasher – Learner’s Editionoriginal ↗
29 Aug 2023
Decade Resistance Box & A Cheap Substituteoriginal ↗
22 Aug 2023
Simple & Safe Adapter for Optocouplers & Solid State Relaysoriginal ↗
14 Aug 2023
KA431/TL431 Time Delay Switchoriginal ↗
7 Aug 2023
BEMF and DC Motor Speed Governorsoriginal ↗
1 Aug 2023
An Arduino Long Event Timeroriginal ↗
26 Jul 2023
Poor man’s Car Power Probeoriginal ↗
20 Jul 2023
BBC micro:bit Dark-Activated LED Badgeoriginal ↗
17 Jul 2023
741 Op-Amp Cookbook for Beginners (v1)original ↗
12 Jul 2023
Safe Car Power Socket v1original ↗
8 Jul 2023
Improved Door Security Monitor Switchoriginal ↗
5 Jul 2023
hFE Test Connector/Adapter for Analog Multimeteroriginal ↗
3 Jul 2023
Poor man’s Transistor Beta (hFE) Testeroriginal ↗
26 Jun 2023
A Hyper LED Switchoriginal ↗
22 Jun 2023
An Eternal LED Blinker – DIYoriginal ↗
15 Jun 2023
Poor man’s 500kHz Oscillatororiginal ↗
12 Jun 2023
Toy/Hobby DC Motor Funoriginal ↗
5 Jun 2023
Another Junk Box Solar LED Candleoriginal ↗
30 May 2023
Water Activated LED Markeroriginal ↗
22 May 2023
Arduino Magic Eyeoriginal ↗
16 May 2023
OLED Display Splash Screen Primeroriginal ↗
12 May 2023
Handheld Engraving Pen & A Little Hackoriginal ↗
9 May 2023
A Makeshift Silicon Diode Temperature Sensororiginal ↗
3 May 2023
BlinkyDuino – Arduino Fun for your STEM Kidsoriginal ↗
27 Apr 2023
Emitter Follower – A Quick Lookoriginal ↗
25 Apr 2023
The LED Photodiode Trickoriginal ↗
19 Apr 2023
Switch Debouncer – Hardware Guideoriginal ↗
17 Apr 2023
LM385 Micropower Voltage Reference – Quick Bitsoriginal ↗
7 Apr 2023
NE555 0-10S Delay Timer Relay Moduleoriginal ↗
31 Mar 2023
Poor man’s Luxury Car Dome Lightoriginal ↗
23 Mar 2023
Dual PC817 Optocoupler Module – Buy or Do It Yourself?original ↗
17 Mar 2023
An Eternal LED Scarecroworiginal ↗
13 Mar 2023
Dual MOSFET Switch Module – WORTH IT OR NOT?original ↗
7 Mar 2023
Learn To Play with Ceramic Resonatorsoriginal ↗
3 Mar 2023
Self-Lock Delay Switch Module DIYoriginal ↗
28 Feb 2023
Build Your Own Bicolor LED Waistbandoriginal ↗
27 Feb 2023
Tricolor LED Signal Batonoriginal ↗
20 Feb 2023
Multipurpose Power-Thrifty LED Flasheroriginal ↗
14 Feb 2023
Universal Pulse Extender Moduleoriginal ↗
10 Feb 2023
Next