4-channel light controller (PWM dimmed 12-60VDC)

thingiverse

So briefly: This is a running version of the driver, with a few bugs that will become apparent later. The system can be powered by DC (7.5-24 V), and for powering LED light bulbs we use either the internal power supply voltage or an external voltage, selected by jumper. The system can be programmed to save up to four different scenes of light to non-volatile memory. For each channel in a scene, you can individually set the rise and fall times of the light, which allows LED lights to smoothly transition from one setting to another, just like halogen lamps used to do. In this particular software, changing the time of rise and fall is only possible via UART (RS232-USB converter). Scenes of light can be programmed using the connector visible in the pictures, or by using a different control device as long as it has five momentary push-buttons. Another software I will deliver soon includes the possibility to communicate with the system via MODBUS RTU/RS485. With a small PCB device attached to the motherboard (visible in the picture), you'll be able to control the system from any device, HMI, or others, and all parameters will always be available. You can also see some extras that I've included: communication MODBUS RTU RS485, real-time clock, an adapter connecting the motherboard and five-button keypad, and an adapter for programming using an ISP programmer. The RTC is not yet implemented, but it will only be available with MODBUS communication because configuring the system without a preview was too strenuous. The last two photos show the final version of the driver I'm working on. Unfortunately, I've had to pause my work due to a lack of time and resources for creating templates for applying solder paste. I don't have a reflow oven, but I'll be using an ordinary convection oven instead. Electronic schematics were created in EAGLE and software was written in BASCOM. Of course, you can convert or improve my schematic and create your own PCB and software - just let me know if my design has helped you control lighting in your home, garage, or on the stairs. That would make me even prouder. If you're interested, I'd be happy to explain how the project is controlled in more detail, add an English version of the programming for basic parameters via UART, or provide PCBs if there's enough interest - we can do them cheaper if there are multiple orders. PS: I found a prototype of this device - it's shown on the last pictures, and it's a THT version with everything on board.