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I made a silly mistake when soldering the power cable, and mixed up polarity... When trying to start it up, it made a bang and the smoke came out. What is the likely damage? What will need

Hi Ramón , A general question on the Raduino32. My understanding is that the ESP32 is powered by 3V3 (VDD) via an on-board regulator. The specification for the digital IO Vih (max) is VDD + 0.3V.

Hi John; Don't get discouraged. Farhan and this community will help you get it figured out. I own an sBitx "Developer Edition" to learn about DSP and RF Design. During the learning process, some of

My sBITX (#59) has been acting strangely, too, and I think the problem is the supply voltage.? I've taken some measurements at J3 (digi board) with various components attached. The voltage at J3

I redid my test gig and came up with some interesting figures for the bird cage. The Q was in excess of 300. Series capacitor of 270PF with 28T of 24ga wire. Series resonate frequency approx. 5.9MHZ.

I found the reason for zero voltage to U7: that pc trace vaporized. This was after I repaired it two nights ago. This left the RPi branch intact with power unchanged. I believe this is from a second

John - I just made a few resistance measurements on my sBitx. With power turned off and disconnected: -- Pin 3 of U7 to case of either driver transistor (free-standing transistors with heat sinks) -

A great summary by Steve, so is U7 suspect ? Are you getting voltage in or out of it ?

Isn’t it so nice to have open source equipment? Makes it so much easier to diagnose. I cracked this radio open for the first time today to show 4 middle school students, who were reasonably well

Voltage is zero at the common point of R1, R2 and the large tab of U7.

Hi John; The error message you're getting is coming from the i2cbb.c module (so great to have access to the sBitx source code!) That module is generating the error because it's finding the I2C serial

I also ran raspi-config to make sure i2c was enabled. No change. I get the same error.

Not having put this into my V6 yet, but I would suggest you spend a few more $$ and get the enhanced version instead of the basic or discovery.? See https://www.amazon.com/gp/product/B07QXQGT65 (

I checked the multi-pin connector. It’s fine. Here’s the cmd line error: (see photo) I2CBB connection lost: i2c_start_cond

Yeah, it's very easy to be a row of pins out and you need to be careful of that as it has the potential to cause mucho damage.

I’ll check the 40 pin connector. I had to take it out to switch out the finals. I may have put it back incorrectly or bent a pin, although I took care to avoid damage. As you know the reassembly of

Ashhar, We all accepted some risk inherent in a developer’s edition. I imagine most of us would have been happy just to learn of the fix. To send upgrade kits free of charge was extraordinary.

For quite a while "just buy an HL2" wasn't an option. Another batch is finally available. wrote:

John - try opening up the command prompt window, going into the sbitx directory, and starting the sbitx program directly from the command line ./sbitx You may get an error message or some other clue