> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# littleBits Threshold

**Type:** Product page · **SKU:** LBH841 · **Brand:** [LittleBits](https://core-electronics.com.au/brands/littlebits-australia) · **GTIN:** 810876020664
**Page:** https://core-electronics.com.au/threshold.html ([markdown](https://core-electronics.com.au/threshold.html.md))

Think of the threshold as a toll booth for signal passing through your circuit. The threshold compares the incoming voltage coming from the bit snapped before it against the voltage amount you’ve set by the threshold knob. If the incoming voltage value is greater than the selected voltage, the threshold will allow the signal to pass and activate any bits (lights, motors, etc…) following it. If not, then nothing will be activated. Use it to make any sensor module into a trigger module!

## Pricing

- **Price:** $21.99 (inc GST) — $19.99 AUD, exc GST
- **Quantity discounts:** 25+ $19.73 (exc GST)
- Special pricing may change at any time.

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 03 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=LBH841:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/LBH841:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Think of the threshold as a toll booth for signal passing through your circuit. The threshold compares the incoming voltage coming from the bit snapped before it against the voltage amount you’ve set by the threshold knob. If the incoming voltage value is greater than the selected voltage, the threshold will allow the signal to pass and activate any bits (lights, motors, etc…) following it. If not, then nothing will be activated. Use it to make any sensor module into a trigger module!

**GEEK SPEAK**

The threshold is a minimum parts count design, using only a single opamp to accomplish the task of comparing the input signal to an onboard reference that is set via the potentiometer control. U1 is configured as a non-inverting comparator with approximately 100mV of hysteresis provided by R1 and R3. VR1 provides the comparator's reference. C1 is a bypass capacitor for U1 that sources current to the opamp during fast switching events.

Check out our Tips and Tricks for more info!

**Technical Details:**

- Dimensions (mm): 20.64(H) x 20.64(W) x 28.58(D)
- Product Number: 650-0009
- Product Weight: 0.09 lbs (0.04 kg)
- Recommended Age:
- SKU: 650-0009
- UPC: 810876020664
- Awards:
- Extra Materials [Circuit Diagram - PDF](https://core-electronics.com.au/attachments/localcontent/LB_BIT_i23-threshold-v03(1_1)_4316573a6c8.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/6/5/650-0009.jpg)