Kelvin Wang
An electrical engineer who designs hardware, ships full-stack products, and builds his own quant tooling.
I'm Kelvin Wang, an electrical engineer. I work on consumer-computing system architecture: IC selection, layout guidance and component placement, through hardware bring-up, power and thermal protection and battery life. I also ship full-stack products like OfferLand on Supabase and Cloudflare Workers, and build my own tooling to track costs and P&L across stocks and crypto.
What I work on
- 01 · Hardware
System architecture, from spec to hardware bring-up.
Consumer-computing system architecture: IC selection, layout guidance and component placement, through hardware bring-up, power and thermal protection circuits and battery-life optimization. I also work on cost optimization for mass production and Python automation.
- 02 · Full-stack
Products built from UI to database.
OfferLand: full-stack development from UI to database, deployed on Cloudflare's edge network.
- 03 · Quant
Tooling for my own capital.
The holding-cost system I use for stocks and crypto: net-cost accounting with real-time cost and P&L tracking.
Things I’ve made
I rebuild implants reported in Ledger and Trezor hardware wallets as 3D teardowns you can rotate. I also write a build-in-public series about this site, plus notes on AI workflows and quant investing.
Elsewhere
How this site makes money
Some pages on this site carry exchange referral links and referral codes. If you sign up through one, I may earn part of the exchange’s referral commission.
Signing up with a referral code can also get you a fee reduction: the exchange itself automatically returns part of the trading fees you pay to your own exchange account. You don’t apply for it. Each exchange’s referral program sets how much, and for some it is 0%.
Where the exchange numbers come from
The exchange section is in Traditional Chinese only. Its reviews carry no scores. They collect what can be sourced: fees, assets in the exchange’s public wallets, incidents, and regions where it can’t be used. Every number cites a source and the date it was checked.
- Trading fees come from each exchange’s official fee page.
- Fee-reduction percentages sync automatically every day, and each page shows the sync date.
- On-chain assets are the total visible on the blockchain in the wallet addresses the exchange has published, as counted by DefiLlama and refreshed about every 4 hours. Nothing owed to users is subtracted, so it is not proof of reserves and not a safety guarantee.
- Reserve ratios come from the proof-of-reserves reports the exchanges publish themselves, shown with the report date.
Not investment advice
What I write about investing and exchanges is personal experience, not investment advice. Crypto prices swing hard, and futures or leverage can lose you your entire stake.