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benhamal

Flaneur

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This user joined on 11/04/2014.

Projects I Like & Follow

100 MSps 2ch oscilloscope based on Raspberry Pi Pico

RPScope

I had time to learn and develop PoE. It's a lot more interesting than I thought. Please come in

What is PoE? My tough PoE development process

Making the most of non-ideal components in a non-ideal world.

Multislope ADC

An "effect box" which works as octave-down effect (halves input frequency). No internal oscillator involved, no PLL, just analog maths!

Analog oscilator-less octave-down effect box

MS-BOSS MS-BOSS

Supplyframe DesignLab: 2023 Hackada…

Low Cost Open source Smartphone controlled Micro RC plane Controller for STEM/STEAM Education

VIMANA - STEM for ALL

Supplyframe DesignLab: 2022 Hackada…

Compact and waterproof camera based on ESP32 usable for short periods of time, powered by solar energy.

Solar harvesting Wi-Fi camera

Cheap discrete DAC with CD4007 CMOS ICs

6bit Digital-Analog-Converter

Florian Wilhelm Dirnberger

It is a python handheld computer with a complete keyboard and a symbolic math engine inside it.

Galdeano handheld computer

Built a 25W reactive load with Baxandall tone control and battery powered headphone amplifier.

Reactive Amplifier Load With Headphone Out

Collin Matthews

A quad OpAmp Makes a Buck Regulator

OpAmp Buck Regulator

A sensor-packed "smartwatch" afflicted with poor wiring design choices, zero water/dust resistance, and massive feature creep.

IP00-minus

CMOS Homemade Operational Amplifier module and a photo detector using it.

CMOS Homemade Operational Amplifier

Raspberry Pi 400 based cyberdeck using a non-functioning oscilloscope.

Oscilloscope Cyberdeck

This simple circuit with an Op Amp LM358 produces a characteristic sound triggered by a flash of light, a touch or an electromagnetic pulse.

Triggered Sound Generator

Burkhard Kainka

Last year, I found a 5FP7 CRT on ebay for $45. My first thought was "Wouldn't it be cool to build a RADAR scope?"

ADS-B on a real RADAR CRT

Jarrett Cigainero

Ultra low cost amplifier circuit for pH sensor and 3.3V Microcontrollers

ultra low cost pH amplifier circuit for 3.3V MCU's

Can you hear the difference between Op Amp´s? Yes! With this headphone amplifier.

Listen to the Op Amp´s

Op amp circuit for generating Spirograph like curves

Op Art

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Bits

Mitsuru Yamada wrote 05/26/2023 at 22:07

Thank you for following my #CMOS Homemade Operational Amplifier and #Homemade Successive Approximation Register ADC ! CMOS Operational amplifiers and ADCs are widely used, but I would like to properly understand their internal principles.

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Mitsuru Yamada wrote 01/31/2021 at 01:07

Thank you for liking and following my #Homemade Operational Amplifier !

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roelh wrote 04/18/2018 at 21:05

Hi Benhamal, thanks for following the One Transistor FlipFlop !

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Dennis wrote 03/29/2017 at 00:10

Thanks for following my project Anna2 aka A2 the agbot!

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