Discrete ADC DIY Kit
Discrete ADC DIY Kit
This kit teaches you how analog-to-digital conversion actually works — built from discrete comparators, flip-flops, and logic gates instead of a black-box ADC chip. You get the board, every component, and a 37-page engineering design guide.
Skills you'll build
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Skills you'll build
What's included
- PCB
- All electronic components — LM393N, 74HC74N, 74HC32N and all supporting parts
- Potentiometer — analog input control
- 8 × LEDs — binary output display
- Documentation — assembly guide and ADC theory
About this kit
Have you ever wondered how analog signals become digital? With the Discrete ADC DIY Kit, you build your own 8-bit Analog to Digital Converter from scratch — using real discrete logic components instead of a single integrated ADC chip. Set the analog input with a potentiometer and watch the result appear live across 8 LEDs as an 8-bit binary value.
The circuit uses an LM393N dual comparator, 74HC74N dual D flip-flop, 74HC32N quad OR gate, and supporting logic to carry out the conversion — the same fundamental operations hidden inside every ADC IC, made visible and understandable.
All components are through-hole, making this kit accessible to anyone comfortable with basic soldering.
What you'll learn
- How analog-to-digital conversion works at the circuit level — not inside a black-box IC
- How a comparator circuit (LM393N) compares a voltage against a reference threshold
- How D flip-flops (74HC74N) store and propagate digital states through successive conversion stages
- How OR gates (74HC32N) combine logic signals in the ADC conversion chain
- How to read an 8-bit binary output from LEDs
- How discrete logic ICs combine to perform the same function hidden inside every ADC chip
- How rotating a potentiometer changes the analog input and shifts the binary LED output in real time
Prerequisites & difficulty
Technical specifications
FAQ
What is an ADC and why build one from discrete parts?
An ADC converts an analog voltage into a digital binary number. Building one from discrete components lets you see each stage of the conversion — the same process hidden inside every ADC IC, made visible.
What binary knowledge do I need?
You need to understand binary numbers — what each bit represents and how to read an 8-bit value. If you can count in binary up to 255, you're ready.
Is this suitable for beginners?
Intermediate level. Basic through-hole soldering experience is required. If you're new to soldering, start with the Soldering Practice Kit or BCD Counter first.
Browse the documentation
Every kit includes a full engineering design guide. Here's a preview.
Before you buy
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Every kit ships with the PCB, every component, the assembly guide and the full engineering design guide. See exactly what you get before you order.
Premium Engineering Files
Gerbers, firmware and simulation files come with every kit. After you order, enter your order email here to download them.
