ET-C17
LIN Bus Transceiver
TJA1021 LIN interface for 12 V automotive buses
AED 79.00
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Overview
TJA1021 LIN interface for 12 V automotive buses
The ET-C17 is built around the NXP TJA1021 — LIN 2.x/SAE J2602, 20kbps, 5.5–27V BAT, ±6kV ESD, low-power sleep.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Car body electronics hacking
- Ambient-light modules
- LIN actuator testing
Key features
What makes it different
Transceiver
NXP TJA1021: LIN 2.x/SAE J2602, 20kbps, 5.5–27V BAT, ±6kV ESD, low-power sleep
Host
Any UART at 3.3V or 5V (TXD/RXD logic thresholds independent of BAT)
Use
Car body electronics, ambient lighting, actuator hacking
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| Transceiver | NXP TJA1021: LIN 2.x/SAE J2602, 20kbps, 5.5–27V BAT, ±6kV ESD, low-power sleep |
|---|---|
| Host | Any UART at 3.3V or 5V (TXD/RXD logic thresholds independent of BAT) |
| Use | Car body electronics, ambient lighting, actuator hacking |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 2 mounting holes (M2.5) |
| Connectors | 6-pin 2.54 mm header |
| Main IC | TJA1021T/20/C,118 (LCSC C271675) |
| Revision | Rev A |
| JP1 (default Open) | Bridge = master node (1k + diode pull-up) |
|---|
Performance
Bus
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIO | Power | Host logic 3.3/5V (pull-ups) |
| 2 | GND | Ground | Ground |
| 3 | RXD | UART | → host RX |
| 4 | TX | UART | Host TX → |
| 5 | SLP | Control | Low = sleep |
| 6 | INH | Signal | Wake output (BAT level!) |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-C17 LIN Bus Transceiver (assembled)
- 1 × 6-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIO, GND, RXD, TX, SLP, INH
Compare
Which vehicle bus board?
| LIN Bus Transceiver (this board)This board | ET-C16 CAN FD Controller + Transceiver | ET-C09 MCP2515 SPI CAN Board | ET-C02 CAN Bus Transceiver | |
|---|---|---|---|---|
| What it does | TJA1021 LIN interface for 12 V automotive buses | MCP2518FD + MCP2562FD, up to 8 Mbps over SPI | CAN controller + 3.3 V transceiver over SPI | 3.3 V CAN transceiver for MCUs with built-in CAN |
| Interface | — | — | — | — |
| Best for | Car body electronics hacking | Raspberry Pi CAN FD | CAN on Raspberry Pi and Arduino | ESP32 TWAI and STM32 CAN projects |
| Price | 79 AED | 69 AED | 9 AED | 12 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.