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If I just power up my raduino it draws about 100ma. nothing else connected, the display works, backlight is on. Without the display, more like 60ma.? Most of that is probably backlight.

Will I have been thinking along the same path and right now it is in the noodling/research stage. I need to get spice on my computer to do some modeling. Skip Davis, NC9O

Some of the clones are going for the lowest possible price, and fab/qc is as cheap as possible. They work well enough for some applications when powered from 5 or 6v. But depending on where that die

Remi F1MQJ- If power consumption is a problem, there are regulator boards that can be had/made that use a torrid to buck-boost the voltage. Much higher in efficiency than a 7805. I have heard a claim

Hi! Farhan and others, I feel spurii are result of the first mixer being over driven by a large margin. A rough estimate indicates that the 45MHz input to the? 1st mixer is in vicinity of 0 to +1

It appears that there are multiple versions of the TA2822 audio amplifier, by several different manufacturers. http://www.alldatasheet.com/view.jsp?Searchword=TDA2822M Some are rated 3V to 15 or 16V

Ian, First, thank you for the time and effort you have put into this radio and now, a truly nice display to go with it. ? I'm new to Arduino but your tutorials and instruction allowed me to upload

Let me try again.

Here is the Google Translate URL for the article.

Hello Remi, I measure 168 ma. for my entire uBITX on idle receive (low volume, no input signal, 13.8 volt source). Since I use a 7808 as a pre-regulator my 7805 is cool enough to pinch and hold, the

Not exactly sure the issue you are describing. However, I see your display is moving in increments of 500Hz.? When I was first trying to get WSJT-X working and the frequency calibrated, I was very

I am going to bend up a case from Brass sheet and I plan to use the case for the heat sink. I will have to use insulators to electrically isolate the finals. It should give me a much bigger surface

I have a receiver here with a first IF of 45 MHz and coverage very slightly more than the ubitx. It has eight filters and very few (maybe none) birdies. In a receiver birdies are a local problem and

Hi Walt, Others here have reported doing what you propose and had no ill effects. I intend to eventually do the same thing. 73, Bill KU8H -- bark less - wag more

Some additional data (sorry it's in french) about consumption trials on arduino boards (genuine and chinese) :

Thanks Folks, I will go ahead with my plans then, so far so good!!, I am having a great time, can’t remember so much fun since I built a Heathkit television in my senior year in high school, guess

I don't have anything that's driven by the AD8307, only the AD9850. However, the OLED doesn't care since it uses pins A4 (SDA) and A5 (CLK) for the clock and data lines for I2C interfacing. The data

Hi, new to uBitx, I've a problem already shown on some thread but more than a plaster on the wound I would like to understand the problem and reduce it. My 7805 get very hot after few minuts (already

I have my power output transistors on a large heatsink with isolators for each. Been using them for several months with digital and voice modes. Works well with no detectable issues. Joe VE1BWV

I have had the fine WD8CEC firmware on my ubitx for about a month, am running the 1.8 version. Today I just started noticing that the carrier frequency display tracks roughly the modulation frequency