Tag: Electronics

  • Spring HDMI cable for a field monitor

    I had no idea that connecting a field monitor to a camera can be that hard! Yes, mount or a small head is important, but the biggest problem is a HDMI cable. It turned out that my Panasonic Lumix GH5 mark 2 needs around 30cm long HDMI cable to connect to Feelworld F6 PLUS field…

  • How to solder 18650 Li-Ion batteries – video tutorial

    All 18650 Li-Ion batteries are hard to solder. Well, not only 18650 but all nickel plated metal elements can be very hard to solder. But only if you do not have the proper tools. In this case, proper flux: soldering acid. Forget about sanding, scratching and other voodoo. There is a better way!

  • ESP8266 and DS18B20 – wireless ThingSpeak sensor

    Here is another small project of mine: battery operated ESP8266 ESP-01 WiFi thermometer using DS18B20 and ThingSpeak API to collect data. Before we proceed, you should:

  • Hardware SmartPort Inverter using BC547 bipolar transistors

    Hardware SmartPort Inverter using BC547 bipolar transistors

    This post is only a short update for SmartPort inverter for F4 flight controllers. Here is alternative SmartPort inverter circuit using bipolar BC547 instead of unipolar 2N7000. All other aspects of operations are the same like in MOSFET version.

  • Using PCA9685 with INAV

    Using PCA9685 with INAV

    The PCA9685 PWM driver working as servo extender is no longer supported in INAV. Use S.BUS output and S.BUS servo extenders instead One of the hardware limitations of flight controllers that usually multirotor users ignores is a number of PWM outputs. To fly a quadcopter you need “only” 4 PWM outputs. Since most FCs have…

  • Hands-on: Beitian BN-880 GPS module

    Looking for a decent replacement for my u-blox NEO-6M GPS modules I came by super cheap, Chinese, Beitian BN-880 modules from Banggood. According to information found in the internet, it’s build based on u-blox Neo-M8N and is capable of receiving signals from GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS. Plus integrated magnetometer module. Yesterday package…

  • How to Build a DIY LC Power Noise Filter for FPV Drones

    Both electrical motor and ESC are source of electrical noise that influences all devices connected to the same battery. This is why, very often, on airplanes or big multirotors FPV circuit is powered from separate battery. On small or medium drones this can be hard to do: additional weight will influence both flight performance and flight time.…