I am replying to a comment, quoted below. I too am a rank amateur, having virtually no experience with these sparkfun forums. A few months ago, I purchased a kit for a Sparkfun survey-gradeZED-F9P GPS device, for about $575, through Amazon. I am extremely satisfied with this.
I have a SparkFun Simultaneous RFID Reader - M6E Nano that I interface with a SparkFun Serial Basic Breakout - CH340G (setup to use 5 volts logic) and everything works perfectly fine. If I leave things exactly the same and I only replace the SparkFun Serial Basic Breakout - CH340G with the a USB to TTL Serial Cable (5V VCC) things don’t work.
All the components mentioned are new, bought directly from SparkFun and arrived today. The board works perfectly, the serial examples work, sd card works, led works.
My device is connected to the computer, and both the Simultaneous RFID reader and the Sparkfun serial basic break out are soldered together at the 6 serial pins. The serial basic breakout blinks both green and red and the simultaneous RFID reader blinks red when connected to the computer.
I have a SparkFun Pro nRF52840 Mini and it works well when I power it via USB but when I power it from a 3.7v 500mAh battery it won't power up and in-fact it starts smoking.
Hello @marco.bernardini, The Artemis Global Tracker uses the Iridium 9603N modem which is only capable of Short Burst Data (SBD) transfers. It is not like the other Iridium modems which support connected mode. You would need to divide your 8K of data into 340 byte chunks and transfer them one at a time. Best wishes, Paul
Thank you. Your information helps a lot. I hope to get an OpenLog Artemis as part of the upcoming sale (if Sparkfun can get them built in time) and include a Qwiic PT100 - ADS122C04 with the order. I'm interested in trying to find out how much an ADC's bit resolution (12-bit, 14-bit, 16-bit, 24-bit) affects the quality of data collected.
