We stock the boards, sensors and modules this project needs. A full parts list is coming soon — for now, browse our DIY Kits & components or search for Other Controller parts.
This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.
We don't carry yet: Voltage Regulator IC (7805 / LM317 / 1117)
Capacitors
Inductors / Coils / Ferrite
CH32V003F4U6 RISC-V microcontroller
unregulated voltage source
This project centers around creating a functional, low-cost processing node powered by the CH32V003F4U6 RISC-V microcontroller. Because microcontrollers require a precise and stable supply voltage to operate reliably, the circuit utilizes an LM1117 voltage regulator. The LM1117 steps down the voltage coming from an unregulated voltage source to the specific operating level required by the microcontroller logic. To ensure this power delivery is clean and stable, passive components such as capacitors and inductors are integrated into the circuit. Capacitors are placed across power lines to filter out voltage spikes, suppress high-frequency noise, and stabilize transient current demands during microcontroller operations. Inductors can also be used in conjunction with capacitors to form filtering networks, smoothing out ripple currents from the power source. Once the clean regulated power is supplied to the CH32V003F4U6, the RISC-V processor is able to boot up and execute instructions without experiencing brownouts or voltage-induced logic errors.
Why Build This
Design ultra-low-cost embedded systems suitable for mass production in consumer electronics and gaming pads.
Implement reliable linear power regulation using an LM1117 to feed sensitive modern microcontrollers from raw, unregulated sources.
Prototyping cost-effective entry-level robotics and electronic controllers powered by open-architecture RISC-V silicon.
Real-World Application
Cost-effective consumer electronics, gaming pads, electronic controllers, and entry-level robotics.
Skills You'll Learn
Linear voltage regulation
Power supply decoupling and filtering
Microcontroller power distribution
Hardware cost optimization
Safety Precautions
No specific precautions noted for this build — always follow general electronics safety practices.
Technology Tags
RISC-V
MICROCONTROLLER
CHIP DESIGN
POWER SUPPLY
VOLTAGE REGULATION
LM1117
Frequently Asked Questions
The LM1117 steps down the higher, fluctuating voltage from the unregulated power source to a stable, fixed voltage level that the CH32V003F4U6 microcontroller can safely accept.
Capacitors and inductors act as filter components that smooth out voltage ripples, suppress electrical noise, and provide local energy storage to keep the microcontroller's power supply stable.
You must ensure that the output voltage of your unregulated source does not exceed the maximum input voltage rating specified in the LM1117 datasheet.
Gallery
This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.
Kitkraft Project Hub — curated from the maker community, credited at the source.
