1/2/3Pcs MCP23017 I2C IIC I/O Expansion Board Module 16bit GPIO Extender Breakout Pin Board For Arduino DIY
$4.15
Today it costs $4.15 on AliExpress. Since Oct 22, 2026, when we started tracking it, the price hasn't changed. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for less than a day; confirming a drop takes at least 3 days. The store advertises "was $8.65", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressAffiliate link: we earn a commission on completed purchases, and the price is the same with or without our code. The price above is the last recorded reading, not a live checkout lookup.
Price history
$4.15
We started tracking this price on Oct 22. The chart takes shape over the days: we only draw prices we observed.
| Store | Ali-TG104 Consumer Electronics Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Consumer Electronics › Smart Electronics |
| Recorded readings | 1 |
| First seen | 10/22/2026 |
| Last reading | 10/22/2026, 3:35:13 PM UTC |