One other possibility to consider to protect against overcurrent situations is to use a current limiting power supply, or add a current limiter to an existing power supply or battery. The current limi

I visited the EasyEDA site this morning and noticed they have changed the portal for submitting gerbers for fabrication. It now brings you to a JLCPCB page with a gerber viewer that is different from

Hi Gordon, No - that ExpressPCB file will not be acceptable to most manufacturer's who require gerbers. The Gerber/Excellon format is a very specific industry standard method for specifying automated

It may be a poor contact issue between the actual LCD panel and its driver board. I noticed it on a similar display here While the display is powered up, try squeezing the LCD portion of the display u

#ubitx-help

Here's what I get if I draw out the relay pinouts (attached) N5IB

#ubitx

For the relays, think of them as a 16 pin DIP package, but with some pins not used. The pin numbers on the uBITX schematic can be used to draw up the pinout on a 16 pin array. Pins 2,4,67 on one side,

#ubitx

The principal problem is that A6 and A7 can not be used as digital pins. Now, since the level detecting keyer scheme sorta works on A6, why not use A7 to do the same sort of thing, but to implement th

Ah ha !! TWEN... that's the info I was looking for... Thanks for the heads up. Now I can sleep at night again - and put the scope probes away :^)) Jim, N5IB From the ATMEGA328datasheet: • SCL/ADC5/PCI

A bit more digging into the datasheets for the ATMEGA328 and the Si5351a... The I2C bus SCL and SDA pins of the NANO (A5 and A4) are part of the ATMEGA's "Port C" general purpose I/O. When used as a d

New to the BITX community, but have had some Arduino/DDS projects in the portfolio, and while awaiting my rig have been doing dangerous and foolhardy things - reading manuals and schematics - hi Notic