The PDM (pulse-density modulation) has been widely used in the current technology of audio signal conversion (from analog to digital) […]
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Software Design
Tutorial: ESP32 with ESP-IDF and C++ in Windows
Why ESP-IDF, C++, and Windows First of all, choosing the ESP-IDF frameworks is the best choice in terms of complete […]
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ESP32 I2S-PDM Interface for Digital Guitar Pedal Application
The PDM (pulse-density modulation) has been widely used in the current technology of audio signal conversion (from analog to digital) because its simplicity while achieving high quality conversion. This technology is widely used in digital microphone, and it is basically a sigma delta modulator circuit which is used in many modern audio codec chip as well. It is an interesting […]
Read moreTutorial: ESP32 with ESP-IDF and C++ in Windows
Why ESP-IDF, C++, and Windows First of all, choosing the ESP-IDF frameworks is the best choice in terms of complete supports for all ESP32 peripherals’s functionality, because it’s the official framework released by the chip’s maker (Espressif). This choice is very important for long term projects, where “investing in time” is unavoidable to manage many things. Secondly, it might be […]
Read moreTypes of AC/DC Power Supply Adapter Circuits and How to Use Them
Power supply is one of the main element in every electronic circuit, and the right AD/DC adapter circuit should be chosen if we want our device to accept power line voltage as the main supply. There several types of AC/DC adapter circuits, transformer-less (non-isolated), step-down transformer, and switched-mode power supply adapter. The schematic diagram of the circuits and how to […]
Read moreFull-Adder Circuit, The Schematic Diagram and How It Works
Introduction Full-adder circuit is one of the main element of arithmetic logic unit. It is the full-featured 1-bit (binary-digit) addition machine that can be assembled to construct a multi-bit adder machine. We can say it as a full-featured addition machine since it has “carry input” and a “carry-output”, in addition to the two 1-bit data inputs and one 1-bit data […]
Read moreESP32-A1S Guitar Multi-Effect Engine with Microphone and MIDI I/O
Since the release of ESP32 by Espressif, many application-specific modules based on this chip are produced. For example, Ai-Thinker produce image processing module with artificial intelligence support for image recognition. In the audio processing area, one interesting product by Ai-Thinker is the ESP32-A1S module. Because of the integrated AC101 codec inside, this module enable very compact and low cost solution […]
Read moreDIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC
Introduction to Reverberation Before getting into the design of DIY reverb pedal circuit, lets see the concept of reverberation first. Real reverberation happens in a performance chamber when the walls and every object inside reflects the sound back and forth. As the sound bounces back and forth in three dimensional space, the reflections creates more and more complex pattern. The […]
Read moreHM936D-PCB Soldering Station PCB Manual
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Read moreDSKIT-P12BME1 Deepstomp DIY Programmable Guitar Effect Pedal Kit with Bluestomp ME-1 Multi-Effect Core
Free shipping worldwide only for US$59 Buy DSKIT-P12BME1 for US$59 (Accept Paypal or credit cards) PRODUCT PACKAGE AND CONTENTS PRODUCT DESCRIPTION Deepstomp DIY Digital Guitar Pedal Kit with Bluestomp ME-1 Multi-Effect CPU module is a components kit containing complete unassembled parts to build a multi-effect stompbox/pedal featured with: Guitar chromatic tuner Integrated noise gate expander and compressor (with off-level and […]
Read moreDSKIT-P12 Deepstomp DIY Programmable Guitar Effect Pedal Kit (without The CPU Module)
Description Deepstomp DIY Digital Guitar Pedal Kit without the CPU module. Kit Contents Pedal Enclosure Case Molded plastic material (2 mm thick) Size: 40 mm x 60 mm x 120 mm Vinyl label sticker Deepstomp Main Board PCB (DSPCB-12) Components Package Components Package Contents Resistors R1,R2,..,R42 ……. 42 x Resistors Switch, potentiometer, and knobs VR1,2 …… 2 x 10K Potentiometer […]
Read moreHM936D-PCB Digital Soldering Station PCB
Description HM936D-PCB is a double-side printed circuit board for soldering station circuit that support power LED indicator, heater driver indicator, up-down push button switch interface, RTD/Thermocouple selection jumper or switch, and 3 digit seven segment display for displaying both set point and the actual temperature. Documents Hardware circuit schematic diagram and system design reference PCB manual (only in bahasa Indonesia)
Read moreDSPCB-12 Deepstomp Main Board PCB Circuit Version 1.2
Description Description DSPCB-12 is a printed circuit boards package for Deepstomp main board (circuit version: 1.2). It contains two pieces of PCBs (panel PCB and CPU mounting PCB). PCB Specification PCB material: FR4 1.5 mm Layer count: 2 Plated through hole: yes Solder adhesive coating: HASL (with lead) Solder mask: yes Silk screen (label) Size : 53 mm x 97 […]
Read moreHM936D-AM8 Digital Soldering Station Controller Chip
Product Description HMC936D-AM8 is a controller chip for HM-936D digital soldering station controller board. The controller is implemented using ATMEGA8 microcontroller, programmed with lock protection to disable the chip for being read or modified. It runs on 8MHz internal factory calibrated RC clock, so there is no need to provide XTAL and its related capacitors. The operational menu, custom sensor calibration […]
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