Imported from GitHub: git4dcc/RTB_C11 · commit f5cca03 · license Apache-2.0
Description
Power distribution and monitoring
README
RTB_C11
Smart Power Protection: This homebrew powerboard actively monitors input voltage to safeguard connected RTB modules. It automatically interrupts power to the RTB subsystem if the voltage drifts outside the safe range of 12V to 18V, preventing damage from erroneous power conditions.
- User Guide - DE
- User Guide - EN
Powerboard features
- FDX bus
- 2Mbps full duplex, RS-485 differential
- HDX bus
- 2Mb, half duplex, RS-485 differential
- up to 2A DCC continuous current
- up to 2A HDX continuous current
- Power input
- Under-, Over-, Reverse voltage protection
- 14-18V DC, >4A
- Soft start
- Short circuit detection with software configurable latch-off, hiccup or current limiter mode
- Expansion slots
- Bus Master Slot (Slot-A)
- Booster Slot (Slot-0)
- firmware update over the bus
Hardware
The PCB layout uses SMD footprints with 0.4mm pitch and a mix of 0603 and 0402 parts. Reflow soldering is mandatory.
| top | bottom |
|---|---|
PCB
- 2-layer PCB, FR4, 1.6mm
- CPU: AVR64DA48, Atmega4809
- PMIC: MAX17613AATP+
Kicad
Firmware
Filename structure: { pcb }{ code }{ version }.hex
Example: C11F0001.hex
| Description | |
|---|---|
| pcb | Name of matching hardware (C11) |
| code | Type of code contained (R=rom, B=bootloader, F=flash, U=bld update, P=UPDI factory code) |
| version | Release version (####) |
UPDI / Fuses
The fuse settings as well as the P-code (C11Pxxxx.hex) has to be installed by using UPDI.
| Fuses Setting |
|---|
| <img src=supplemental/images/C11_fuses.jpg width=500> |
Images
| Standalone | Closeup | FDX + HDX bus connected |
|---|---|---|