vandal Download - vandal Source code download

vandal

AI Source Code

1.0.0

Download

vandal

A lighting and fan control system for campervans (or anything else)

vandal is an ESP32-based 10-channel smart switch module with LoRa, CANBus, a display, and a rotary encoder. For 12-24V DC systems, intended to control camper or RV lighting. It features

7 switched-positive output channels, capable of each sourcing 5A at Vin (up to 27V) . All channels support fade, blink, breathe modes via an SX1509 driver.
3 switched-negative channels, capable of each sinking 200mA at up to 30V.
6 protected IO lines, 5V-tolerant and operating at a 3.3V logic level
CANBus interface (via a SN65HVD230 transceiver)
Protected 1Wire bus, operating at 5V, for temperature sensors (DS1820B and others)
LoRa transceiver (HopeRF RFM95) with SMA antenna connection
USB programming for the ESP32 (using a FT232R)
Numeric/text display: footprints and headers to support 2x Adafruit 0.54" LED backpacks
8x32 LED matrix: footprints and headers to support 4x MAX7219-based 8x8 LED arrays Amazon AliExpress 1 AliExpress 2
Rotary (quadrature) encoder to allow control by the user
Protected power supply supporting 12V and 24V lead-acid and LiFePO4 battery systems

Protected lines feature diode clamping to 5V and 0V, and high-current lines include TVS diodes on the output to protect against overvoltage and back-EMF. The input has reverse polarity protection. All outputs (and the input) are individually fused.

This project is a work in progress, and the software for the ESP32 doesn't exist yet. It's intended to control LED lighting in my van, and is a bit of an excuse to play with CANBus and the RFM95 LoRa module.

The PCB was created in KiCad. I have a few spare - if you're interested, shoot me an email and I can post you one for a small fee. Alternatively, the gerber files are available here.