m5stackM5Stack
Unit ChainBUS (STM32G031)
Manufacturer part no. U212
$4.50≈ 3.96 €
Price summary
Listed by m5stack at €3.96. Delivered to France, including shipping, VAT and any customs duty, it comes to about €22.75. Prices last checked on 2026-10-01.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
In stock
Estimated landed cost
| Item | €3.96 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €3.79 |
| Total delivered | €22.75 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
Also available second-hand on eBay
1979 -- PREMIERE MESSE A ND DE CHATEAUNEUF SUR CHER U212
sold by bleuroy85100 · ships from FR
Visit ↗€5.50
€5.50 delivered
U212 Token Anillo Restrike Venice California CA Good For 5 Cent Refund
sold by backalleyantiquescollectibles · ships from US
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€4.39
billed $4.99
€6.01 delivered
PC HARRY PAYNE CAMERON HIGHLANDERS TUCK 9883 MILITARY VINTAGE POSTCARD (u212)
Used · sold by cartepostalesale · ships from HU
Visit ↗€8.99
€10.99 delivered
Lot U212 : 2 figurines Dora l'exploratrice & Singe Babouche 11-7.5cm Viacom 2003
Used · sold by rafanny · ships from FR
Visit ↗€9.99
€12.49 delivered
GRANDE PHOTO presse Jacques CHIRAC conférence sur ORTF U212
Used · sold by ecureuil7agile · ships from FR
Visit ↗€10.00
€13.60 delivered
NIB SLIK Lens Caddy Black for U212 Delux Universal Tripod
New · sold by xboxmeow · ships from US
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€9.34
billed $10.60
€32.86 delivered
Third-party listings on eBay, matched to this product by its part number or title. Robotitem neither sells nor warrants these items: condition, stock and lead times are the seller's, and a listing disappears once sold. Delivered cost includes the seller's actual shipping.
Specifications (automatically extracted)
Mechanical
| Weight | 17 g |
Description
Description Unit ChainBus is a Chain series communication protocol conversion unit. It integrates an STM32G031G8U6 chip and uses a UART daisy-chain communication protocol to enable chained connections of multiple devices. It supports multiple protocol interface conversions, allowing various peripherals to be expanded on the same bus, and integrates hardware control and data interaction capabilities. The UART interfaces on the left and right sides are used to connect Chain series devices, supporting device UID query, version query, link device enumeration, heartbeat communication, and more. The top multifunction expansion interface can be used to extend Unit series devices, supporting I2C communication control, GPIO management (input and output), ADC sampling, and NVIC interrupt management. It is suitable for industrial control, IoT, smart home, and other application scenarios, providing an effective solution for unified control and data interaction of multiple devices. Features STM32G031G8U6 core controller UART daisy-chain communication protocol, supporting single / multiple Chain series devices in a chained connection 1 x RGB LED for status indication 1 x HY2.0-4P multifunction expansion interface for extending Unit series devices 2 x HY2.0-4P UART interfaces for extending Chain series devices Development Platform UiFlow2 Arduino Includes 1 x Unit ChainBus 2 x HY2.0-4P Grove Cable (5cm) Applications Chain bus device expansion Industrial control IoT Smart home Specifications Specification Parameter MCU STM32G031G8U6 Interface 2 x HY2.0-4P UART Interfaces, 1 x HY2.0-4P Multifunction Expansion Interface RGB LED 1 x WS2812 Communication UART 115200bps @ 8N1 Chain Protocol Chain Bus UART daisy-chain communication protocol Chain Features Device UID query, version query, link device enumeration, heartbeat, etc. Expansion I/O I2C communication control, GPIO management (including interrupt configuration and status query), ADC sampling, NVIC interrupt management Power Consu