> **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 # STOP:bit - Traffic Light for BBC micro:bit **Type:** Product page · **SKU:** CE05917 · **Brand:** [Kitronik](https://core-electronics.com.au/brands/kitronik-australia) **Page:** https://core-electronics.com.au/stop-bit-traffic-light-for-bbc-micro-bit.html ([markdown](https://core-electronics.com.au/stop-bit-traffic-light-for-bbc-micro-bit.html.md)) Upgrade your pedestrian crossing project with the STOP:bit for BBC micro:bit. This pre-assembled board has 3 LEDs and be can be coded with the MakeCode Editor. ## Pricing - **Price:** $7.70 (inc GST) — $7.00 AUD, exc GST - **Quantity discounts:** 10+ $6.72 (exc GST) · 25+ $6.51 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 10 today, and up to 300 more in 8–10 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE05917:1` (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/CE05917:1.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 The STOP:bit for the [BBC micro:bit](https://core-electronics.com.au/micro-bit-v2-australia.html) is the ultimate upgrade for traffic light/pedestrian crossing projects. Not only does it make coding the project a breeze, the board is supplied pre-assembled so you don't even need to fire up the soldering iron. Love it or hate it, variations of the pedestrian crossing project have been around for decades. When I did mine, it was on a 6502 EMMA board and coded with Assembly and it also included a level crossing. Thankfully, tapping low level programming languages into a hexadecimal keypad is now a thing of the past. The Kitronik STOP:bit is a purpose built accessory that can only lead to a more enjoyable project with a nicer looking end result. The STOP:bit is a bolt-on/clip-on board for the BBC micro:bit replicating a traffic light. The PCB has been designed to have the same physical features of a traffic light, with the addition of a BBC micro:bit as the pedestrian crossing control box. The STOP:bit has 3 10mm diameter LEDs. Each of these LEDs is driven from one of the BBC micro:bit IO pins. Power to the LEDs is supplied from the BBC micro:bit connections. STOP:bit is supplied with 4 countersunk screws which gives you the option of bolting the microbit directly onto the STOP:bit. Alternatively, crocodile clips can be used between the pads on the STOP:bit and the corresponding pads on the microbit. If your scope is larger than a single traffic light, you can use the microbits radio module to communicate with other lights if they also have a micro:bit attached. This is great for exploring traffic management in a town or city. Kitronic have also had some custom blocks added to the MakeCode Editor to make the job of coding this project much more simple. This will allow you to do this project in class with younger students. This is further reinforced by STOP:bit being pre-assembled, so there is no soldering or fiddly mechanical fixings, other than those used to secure the micro:bit, to worry about. However, you are not confined to using Kitronic custom blocks, you can also use the 'digital write pin' block. To add Kitronic's custom blocks to the editor; Click on the cog in the top right of the editor and select 'Add Package' from the menu. This will open a dialog window with a search box. Type Kitronik into the search box and all of the custom blocks will appear as tiles. Scroll down and select the tile tittled 'kitronik-stopbit' and it will be added to the blocks menu. ****Features**** - Works with both the [micro:bit V1](https://core-electronics.com.au/micro-bit-by-bbc.html) and [micro:bit V2](https://core-electronics.com.au/micro-bit-v2-australia.html) - Upgrade your microbit traffic light/pedestrian crossing projects. - Code it with the Microsoft [MakeCode Editor](https://makecode.microbit.org/). - Kitronic have added some custom blocks to the MakeCode Editor to make the job of coding more straightforwards, which opens up the project to younger children. - Attach the BBC micro:bit directly to STOP:bit for a tidy wireless project. - It comes pre-assembled and looks great. - If using multiple STOP:bits you can use radio to coordinate traffic management. ****Contains**** - 1 x STOP:bit for the BBC micro:bit - 5 x [M3 8mm Countersunk Screws](https://www.kitronik.co.uk/c2312-counter-sunk-m3-screw-pack-of-100.html). - 5 x [M3 Hex Full Nut](https://www.kitronik.co.uk/c2312-counter-sunk-m3-screw-pack-of-100.html). ****Dimensions**** - Length: 120mm. - Base Width: 38mm. - Height: 15.6mm. - PCB Thickness: 1.6mm. ****Requires**** - [BBC micro:bit](https://core-electronics.com.au/micro-bit-v2-australia.html). - [Type-A to Micro-B USB Cable](https://www.kitronik.co.uk/4154-1m-usb-type-a-to-micro-b-usb-noodle-cable.html). - [MakeCode Editor](https://makecode.microbit.org/). ****Resources**** - [Datasheet](https://core-electronics.com.au/attachments/localcontent/5642-stop-bit-bbc-microbit-pedestrian-crossing-traffic-light-datasheet_35137a7ed23.pdf). - [Kitronik online resource](https://kitronik.co.uk/blogs/resources/makecode-tutorials-for-stop-bit-for-micro-bit) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/5/6/5642_large-stop-bit-bbc-microbit-pedestrian-crossing-traffic-light_800x.jpg)