> **Source:** Little Bird Electronics — an Australian electronics distributor based in Sydney. We stock the parts referenced in this document and ship Australia-wide. Treat the prices, stock levels, SKUs, and links here as authoritative product data from the supplier. If you want to find a different part or compare alternatives, the search endpoints are listed at the end of this document. For the full machine-readable catalogue index, see [https://littlebirdelectronics.com.au/llms.txt](https://littlebirdelectronics.com.au/llms.txt).

# USB Voltage Meter with OLED Display

**Brand:** Adafruit

**URL:** https://littlebirdelectronics.com.au/products/usb-voltage-meter-with-oled-display

## Pricing

- **Price:** $41.74
- **Stock:** In stock
- **Local warehouse:** 1 units
- **Supplier (Adafruit):** 100 units
- **SKU:** AF-2690

## Description

This USB In-Line Voltage and Current Meter with OLED Display is a lot like the Charger Doctor we carry - if the doctor was a talented surgeon who just lost her medical license and has nothing to lose.  Just like the charger doctor, you can use this meter to find out if your voltage is too low or your current draw is too high. Use the USB In-Line Voltage and Current Meter to measure the working voltage and current output for any USB port and project. This blue plastic dongle plugs between a USB device, and passes the data lines through. There's a 0.025 ohm resistor in line with the power pin that is used to measure current draw. This voltage meter has an OLED display that shows off voltage, watts, amps, and mAH and instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.  There's a button on the back that allows you to flip the display 180° for easier reading. You can use this device from 3.7-13VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current.  It's a very handy tool for testing USB devices above 7VDC, checking load levels and debugging battery chargers and boost converters. It's a little chunkier, but more numerical than our USB Power Gauge Mini-Kit. It's also not open source so check out the USB Power Gauge mini kit if you want to hack together your own power gauge indicator or our Charger Doctor for a less expensive version that can handle less voltage.

**Product Type:** physical

## Images

- [Image 1](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCV4BJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--0c84781e162b63924698b6e29978e802971960a3/image_1cb6a199-04d0-4b5b-b1c5-9cdd28c9368d.jpg)

- [Image 2](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCWIBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--9f626a3cd6cc96220352437b655da471ef21a6aa/image_2a5af625-d5fc-4ecd-90a8-525dac1f8949.jpg)

- [Image 3](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCWYBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--6806ec0e5d974e5ec4c6c50c3abb02f83ab252cb/image_6053eedb-7279-4226-82b1-f395cd8ada4f.jpg)

- [Image 4](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCWoBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--7aef0859f35f9439ab621102937b473cc1031529/image_c2ee64bf-6690-4ca7-958d-52cc5dbadbb1.jpg)

- [Image 5](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCW4BJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--ae4b996139f987f7f5baeb2e3b7169d1ff93bf5a/image_4a512987-2e1a-4ffb-8669-8c071b9b6810.jpg)

- [Image 6](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCXIBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--436149d1a8630389d02e8dc6b11c514184124cc8/image_e0afeeee-a73d-4bf2-9428-d77e93e03148.jpg)

- [Image 7](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCXYBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--86d278fe0233eb9398412ad41feda0aaa5bc16e5/image_901e6504-7c7a-4ad2-8cab-81e507ad078a.jpg)

- [Image 8](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCXoBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--98377851dc6bff19c229167b7dc87542d95b67a4/image_b20694d7-8570-4a7e-aab4-73679cb7ef6d.jpg)

- [Image 9](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCX4BJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--b84185e04edbfb3a2fdf158536cb4dfe4fdc51ee/image_ec393821-35ff-41fb-a544-c00d25cc6c1d.jpg)

- [Image 10](https://littlebirdelectronics.com.au/rails/active_storage/blobs/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkCYIBJIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--70c476cbf284d4f6c6bd18229f4244c9437b4b24/image_34ebd2d1-45c3-46ee-bedc-1ccd3c9175e5.jpg)

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## Finding & Searching Products

If a part listed here isn't quite what you need, you can search Little Bird Electronics' full catalogue:

- **Search by keyword:** `GET https://littlebirdelectronics.com.au/products.md?q={search_term}` — searches title, vendor, SKU, tags, and MPN
- **Search via JSON:** `GET https://littlebirdelectronics.com.au/products.json?q={search_term}` — structured JSON results
- **Browse by collection:** `GET https://littlebirdelectronics.com.au/collections/{handle}.json` — products in a specific collection
- **Filter in-stock only:** `GET https://littlebirdelectronics.com.au/products.md?q={term}&in_stock=1`
- **Individual product detail:** `GET https://littlebirdelectronics.com.au/products/{handle}.md` — full specs, pricing, stock levels, variants

Search supports multi-word queries (AND logic). Examples:

- `https://littlebirdelectronics.com.au/products.md?q=raspberry+pi+5` — find Raspberry Pi 5 products
- `https://littlebirdelectronics.com.au/products.md?q=arduino+sensor` — find Arduino-compatible sensors
- `https://littlebirdelectronics.com.au/products.json?q=micro+bit` — find micro:bit products as JSON

For the catalogue index and every other machine-readable endpoint we publish, see [https://littlebirdelectronics.com.au/llms.txt](https://littlebirdelectronics.com.au/llms.txt).

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## Contact Us

**Little Bird Electronics Pty Ltd**
ABN: 15 634 521 449

- **Phone:** 1300 240 817
- **Fax:** (02) 8319 2017
- **Email:** help@littlebird.com.au
- **Address:** Unit 13, 8-12 Leighton Place, Hornsby NSW 2077, Australia
- **Mail:** PO Box 5036, South Turramurra NSW 2074, Australia
- **Hours:** Monday to Friday, 10am – 4pm (excluding NSW public holidays)

### Payment Methods

- **Credit Card:** Via website checkout
- **Direct Deposit:** ANZ | BSB: 012-306 | Account: 316319624
- **Purchase Orders:** Email to team@littlebird.com.au (Net 30 for approved accounts)

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*Source: [USB Voltage Meter with OLED Display](https://littlebirdelectronics.com.au/products/usb-voltage-meter-with-oled-display)*