NULLLAB
IO Expansion Board I2C, 8 Channal ADC/IO, PWM Output at E1/E2, Delicated Pin Groups, Support Arduino, Raspberry Pi, Micro:bit
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
NULLLAB IO Expansion Board, 8 Channal ADC/IO, PWM Output at E1/E2, 4-Pin PH2.0 I2C Port, Support Arduino, Raspberry Pi, micro:bit Docs: github.com/nulllaborg/gpio_expansion_board
SpecPicks Verdict
SpecPicks classifies IO Expansion Board I2C, 8 Channal ADC/IO, PWM Output at E1/E2, Delica… as a category leader on buyer feedback in the emulation hardware category, based on 1 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. NULLLAB's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for emulation hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 5.0★ average across customer reviews
- ✓ Compatible with 3-5V logic signals.
- ✓ Backed by NULLLAB's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Limited review volume so far — fewer data points on long-term reliability
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- 8 channel GPIO. Can be set for ADC, digital I/O, or 1Hz to 10kHz PWM output (E1/E2 only). Docs: github.com/nulllaborg/gpio_expansion_board
- Compatible with 3-5V logic signals.
- Operates on an I2C interface at address 0x24. Comes with one DuPont to PH2.0 connection cable.
- Comes with an IO expansion module, and a DuPont to Ph2.0 cable.
Full Specifications
| Brand | NULLLAB |
|---|---|
| Built-In Media | 1 * Dupont to PH2.0 Cable, 1 * IO Expansion Board |
| Processor Count | 1 |
| Operating System | Linux |
| Compatible Devices | Arduino, Raspberry Pi, Micro:bit |
| Included Components | 1 * Dupont to PH2.0 Cable, 1 * IO Expansion Board |
| Warranty Description | 1 Year Manufacturer |
| RAM Memory Technology | LPDDR3 |
| Connectivity Technology | I2C |
| Smart Home Compatibility | Not Smart Home Compatible |
| Item Dimensions L x W x H | 1.57"L x 0.88"W x 0.2"H |
Ready to buy?
IO Expansion Board I2C, 8 Channal ADC/IO, PWM Output at E1/E2, Delicated Pin Groups, Support Arduino, Raspberry Pi, Micro:bit is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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