10 PCS DC-DC LM2596 Step Down Adjustable Converter Power Supply Module 1.3V-35V
Title says it all. Simple, straightforward step-down converter that works. Obviously you need a separate voltage indicator to set the voltage, but that's why it's cheaper than ones with a built in display. I use it to power a sound board for model railroads and for Arduino e...Read full review
MINI Electric AC/DC OHM Voltmeter Ammeter Multimeter Multi Tester MF-110A New
Cheap, flawed, only chinese instructions
Don't bother if you can't read Chinese because there are no English translation of instructions. Plus it's cheaply made and I had problems getting mine to work reliably. Not worth it even at the low price.
Multifunction 12V FRM01 Timer Module Relay Module Cycle Self-locking PLC Delay
Handy timer for model railroads
With this board, you can set times to activate a variety of devices (sound boards, lights, etc) on your layout. Each of the two timing sequences can be set separately so you can use one to set the frequency of an event (say, every 2 minutes) and the duration. Altho the instr...Read full review