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biemster

Allround physics, electronics and computing enthousiast.

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This user joined on 05/09/2015.

My Projects

Porting the Android on-device speech recognition found in GBoard to TensorFlow Lite or LWTNN

Android offline speech recognition natively on PC

HF antenna analyzer using Si5351 as signal source, resistive swr bridge and ESP32 or Arduino as the brains

Si5351 HF Antenna Analyzer

Simple Geiger counter using ESP8266 PWM for HV generation and network connectivity

ESP8266 Geiger counter

Custom firmware for the CH552 found in those USB RGB macropads with a rotaty knob

RGB macropad custom firmware

Single MEMS microphone with audio over UDP, using only RP2040 and INMP441 and just 3 resistors! (and an RJ45, plus some more for active PoE)

Ethernet microphone with PoE (active or passive)

Projects I Like & Follow

Hackaday Prize 2019

Fun-on-a-Keychain is back, packing all your games and multiple emulators in a cute and extremely tiny handheld console.

FunKey project - All your games on your keychain !

Hackaday Prize 2020

Pocket sized ESP32 display board with 180µW Always On Display and Gyro Controls

Low Power ESP32 Handheld

I wanted to make a low cost drone with all the bells and whistles, so people working with a small budget can get into the drone game. ~$50

ESP32 Drone

Supplyframe DesignLab: 2022 Hackada…

portable flexible panel + MPPT controller + solar tracker system less than 55 USD ????

Low cost solar panel solution (MPPT + sun tracker)

Supplyframe DesignLab: 2022 Hackada…

Tiny Linux handheld with LoRa+WiFI+BT connectivity.

Notkia (name change planned)

Transmit radio signals using just a serial port? You bet!

Serial Port SDR

Hackaday Prize 2019

BikePin is a small device hidden in the construction of a bicycle which its owner can message and the device will send the bike’s location

BikePin

A solar-powered node that stores energy in a supercapacitor, wakes-up regularly, measures different parameters, and sends them to a gateway

Wireless solar-powered sensor node

Radiation measurement device w/ Raspberry Pi Pico and STS-5 tube

Geiger counter

Florian Wilhelm Dirnberger

A marker pen sized Geiger counter with up to 12 months battery life from 2xLR44, based on STM8L152K4 microcontroller

Compact, low-power Geiger counter

Add a user interface to a D1 mini

D1 Mini UI Shield

A small, fully 3D printed tank, designed with a focus on compactness and performance

Mini FPV Speed Tank

Measuring radioactivity without need of Geiger tube.

Nuclear radiation sensor with photodiode detector

360 degree panoramic video on an omnidirectional chasis, controlled in VR.

PanoBot

You can simply write code in Arduino IDE and hit one button to flash the ch55x chip to get code running.

Ch55xduino

Hello everyone, this is Corebb~ For a long time, I have wanted to make this vector laser projector (aka Laser Galvo Projector)

bbLaser - ESP32 RGB Laser Galvo Projector

Hackaday Prize 2019

a device you can use like tracker or node of CAT-M1/NB1/GSM

uTracker

Harvested energy, battery-less home electrical power monitor using Pro Mini, supercapacitor and 433Mhz RF.

Battery-less power monitor

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Bits