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24 Hour Engineer

A daily blog about the things created by Brian McEvoy. Original creations, cooking and body mods.

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Showing posts with the label DTMF

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2026-02-19 (Th) TuningWhistles COMPLETED

February 20, 2026

3D Modeling 3D print acoustics alert blue box completed DTMF DTMF decoder dual tone multi frequency Dual-Tone Mult-Frequency phlute phone tones phreaking printer tone generation TuningWhistles whistle

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2026-02-18 (W) TuningWhistles New shape testing

February 19, 2026

3D Modeling 3D print acoustics alert blue box DTMF DTMF decoder dual tone multi frequency Dual-Tone Mult-Frequency phlute phone tones phreaking printer tone generation TuningWhistles whistle

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2026-02-17 (Tu) TuningWhistles Tuning the rectangles

February 18, 2026

3D Modeling 3D print acoustics alert blue box DTMF DTMF decoder dual tone multi frequency Dual-Tone Mult-Frequency phlute phone tones phreaking printer tone generation TuningWhistles whistle

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2026-02-15 (Su) TuningWhistles Graphing and making a second round

February 16, 2026

3D Modeling 3D print acoustics alert blue box DTMF DTMF decoder dual tone multi frequency Dual-Tone Mult-Frequency phlute phone tones phreaking printer tone generation TuningWhistles whistle

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2026-02-14 (Sa) TuningWhistles Concept and modeling

February 15, 2026

3D Modeling 3D print acoustics alert blue box DTMF DTMF decoder dual tone multi frequency Dual-Tone Mult-Frequency phlute phone tones phreaking printer tone generation TuningWhistles whistle

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2025-02-05 (W) RedBoxtober The last failure

February 06, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-02-04 (Tu) RedBoxtober Thick fins and two tries at everything

February 05, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-02-03 (M) RedBoxtober Warm resin and clean screen

February 04, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-02-02 (Su) RedBoxtober More printer problems

February 03, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-02-01 (Sa) RedBoxtober Mostly failed prints

February 02, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-01-30 (Th) RedBoxtober Propeller model

January 31, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-01-29 (W) RedBoxtober Sub-hull model

January 30, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2025-01-28 (Tu) RedBoxtober Concept and sketch

January 29, 2025

3D print box DTMF float magnetic coupling marine phreaking propeller PVC red box Red Boxtober RedBoxtober remote control ROV sea sealed submarine underwater ROV water waterproof

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2023-10-22 (Su) DTMF_Decoder COMPLETED

October 23, 2023

analog dialing DTMF DTMF_Decoder Dual-Tone Mult-Frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox touch tone twelfth root of two whimsical

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2023-10-21 (Sa) DTMF_Decoder Test circuit

October 22, 2023

analog dialing DTMF DTMF_Decoder Dual-Tone Mult-Frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox touch tone twelfth root of two whimsical

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2023-10-19 (Th) Phlute Instructable

October 20, 2023

analog dialing DTMF dual tone multi frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox RedBoxFlute touch tone twelfth root of two whimsical

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2023-10-18 (W) Phlute REV 2 COMPLETED

October 19, 2023

analog dialing DTMF dual tone multi frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox RedBoxFlute touch tone twelfth root of two whimsical

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2023-10-17 (Tu) Phlute Working but impractical

October 18, 2023

analog dialing DTMF dual tone multi frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox RedBoxFlute touch tone twelfth root of two whimsical

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2023-10-16 (M) Phlute More recorder recording

October 17, 2023

analog dialing DTMF dual tone multi frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox RedBoxFlute touch tone twelfth root of two whimsical

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2023-10-15 (Su) Phlute Measurements and experimentation

October 16, 2023

analog dialing DTMF dual tone multi frequency flute for fun instrument music phlute phone phone hacking phreak phreaking red box redbox RedBoxFlute touch tone twelfth root of two whimsical

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Brian McEvoy

Archive

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Labels

#IoTHackDay
<ideal
~
0.96"
0.96" OLED
03-14-2025
1.05946
11*17
11x17
12 root 2

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