I tried 4 of them at 3.3, 5 and 9 volts output with 12 volts input. In all cases the output voltage was much too low to operate the micro controllers. Even though the adj pads were not shorted the potentiometer would change the output. If the adjustable pads are shorted the I still could not get 5 volts output. On the plus side they are small and inexpensive.
DC/DC 12V To 24V Boost Converter 40A 960W - Waterproof Voltage Regulator Module For Car Power Supply (10V-16V Input)
15 Review
TV Tuner LUMAX DV-2120HD
15 Review
Germany France Travel Power Adapter,TESSAN Schuko Plug With 2 USB Ports 2 AC Outlets, US To European Europe German French Spain Iceland Norway Russia Korea Adaptor(Type E/F)
17 Review
VINTAR EU To US Plug Adapter 3-Pack For Easy Travel: Europe To USA Converter For Spain, France, And More, Compatible With Type C/E/F Plugs - European To US Power Adapter Solution
11 Review
🔊 Enhance Your Audio Experience with the SVS Prime Wireless SoundBase
3 Review
🎧 Denon AVR-X8500H: Flagship Receiver with 8 HDMI In/3 Out, 13.2 Channel Amplifier (150W/Ch), Dolby Surround Sound, Alexa & HEOS Compatibility
3 Review
Enhance Your Outdoor Audio Experience with the Monoprice 108240 RMS 100W Outdoor Speaker Volume Controller in White
3 Review
Diamond Wireless Extender Transmitter Receiver
3 Review