Old circuit boards are too valuable to throw away and, in many states, too toxic to legally put in the trash. You have several good options: recycle them for metal recovery, sell them as scrap, repurpose them for projects or art, or drop them at an e-waste collection point. The right choice depends on how many boards you have and how much effort you want to put in.
Why You Shouldn’t Toss Them in the Trash
Circuit boards contain lead, cadmium, mercury, and brominated flame retardants that can leach into soil and groundwater when they sit in a landfill. The lead content alone can run as high as 3% by weight, mostly from the solder that connects components to the board. That’s enough to classify them as hazardous waste in many jurisdictions.
At least 16 U.S. states plus Washington, D.C. have outright bans on putting electronics in municipal landfills. These include California, New York, Illinois, New Jersey, Connecticut, Minnesota, Oregon, Pennsylvania, Wisconsin, Indiana, North Carolina, South Carolina, Rhode Island, and Vermont. Even in states without bans, most waste haulers discourage it. Globally, only about 22% of e-waste gets formally collected and recycled in an environmentally sound way, so every board you divert from the trash makes a difference.
Sell Them as Scrap
Circuit boards contain recoverable gold, silver, copper, and palladium. One ton of waste boards holds roughly 39 grams of gold, and the concentration of precious metals in circuit boards is about 10 times higher than in naturally occurring rich mineral ores. That’s why scrap dealers will pay you for them.
Current scrap prices vary widely by board type. High-grade boards (think server motherboards or boards with large gold-plated connectors) fetch around $3.20 per pound. Standard motherboards from desktops and laptops go for about $0.50 per pound. Low-grade peripheral boards, like those from printers or basic consumer electronics, bring roughly $0.25 per pound. If you’ve accumulated boards from several old computers, even a small box can be worth a trip to a scrap buyer.
Search for “e-waste scrap buyer” or “circuit board scrap” in your area. Many accept walk-ins. Some also buy by mail if you have enough volume to justify shipping costs. Sort your boards by quality before you go, since mixing high-grade and low-grade boards together will get you a lower average price.
Drop Them at an E-Waste Recycler
If you only have a few boards and selling isn’t worth the hassle, certified e-waste recyclers will take them for free. Many municipalities run periodic e-waste collection events, and retailers like Best Buy and Staples accept certain electronics year-round. Check your city or county’s waste management website for local drop-off locations.
Once boards reach an industrial recycler, they go through one of two main recovery processes. Thermal methods (called pyrometallurgy) use smelting and high-temperature reactions, sometimes exceeding 1,100°C, to melt and separate metals from the fiberglass and resin base. Chemical methods (hydrometallurgy) dissolve the metals using acid solutions, leaving the non-metallic materials behind as solid residue. Both approaches recover copper, gold, silver, and palladium that get fed back into manufacturing supply chains.
Repurpose Them for Projects
If you’re into electronics, old circuit boards are a free parts bin. You can desolder and salvage components like resistors, capacitors, LEDs, connectors, and voltage regulators for future builds. This is especially useful if you prototype with Arduino or similar microcontrollers.
Old boards can be cut and reworked into custom breakout boards for sensors, power distribution, or communication modules. For example, you can repurpose a section of an old motherboard as a power splitter that feeds a single 5V source to multiple LEDs or motors. Working with salvaged boards also builds practical skills in reverse-engineering circuits, soldering, and troubleshooting that are hard to learn from tutorials alone.
For non-electronic uses, circuit boards have a distinctive green-and-copper look that works surprisingly well in art and craft projects. People turn them into coasters, picture frames, jewelry, guitar picks, and wall art. The boards cut cleanly with a rotary tool or heavy-duty scissors (for thinner flex boards). If you go this route, work in a ventilated area and wear a dust mask, since the fiberglass dust and residual solder are not something you want to breathe.
Donate Them for Education
Schools, makerspaces, and community workshops often welcome old circuit boards as teaching materials. Students can practice soldering and desoldering, learn to identify components, and study how circuits are laid out in real products. If you have boards from different eras or device types, that variety makes them even more useful as a teaching collection. Reach out to local hackerspaces, STEM programs, or vocational schools to see if they’re interested.
How to Handle Them Safely
You don’t need a hazmat suit to handle a few old circuit boards, but some basic precautions are worth taking. The lead in solder can transfer to your hands, so wash up after handling boards and avoid eating or touching your face while sorting through them. If you’re cutting, grinding, or sanding boards, always wear a dust mask and eye protection. The fiberglass substrate creates fine particles that irritate lungs and skin.
Store boards you plan to recycle or sell in a cardboard box or plastic bin. Keep them dry to prevent corrosion of the contacts and connectors, which reduces their scrap value. If a board has a battery (common on motherboards), remove it separately. Lithium batteries are a fire risk in e-waste bins and should go to a battery recycling drop-off instead.