TTL, voltage, one-wire test rig
- Thread starter adamaero
- Start date
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
34 replies · 5K views
Engineering news on Phys.org
adamaero
- 109
- 1
"6 GPIO pins and also contains a High Speed UART, SPI bus and I2C Bus"berkeman said:Does it specify SPI datarates anywhere? Sorry if you already posted it and I missed it.
"Includes 2X High Speed 3.3V (5V Tolerant) TTL Serial Ports, 1X High Speed SPI Interface, 1X I2C Interface with onboard pullups, 8X GPIO Pins"
I can ask the company for a numerical value.
- Is "high speed" is a specific value?
- Also, why SPI? Is this one SPI? Why isn't it UART?
- GPIO5/UART2_RX/SPI_IN
2025 Award
- 17,110
- 10,625
Designing from the top, down;
After building a data logger you can plug in your 'test unit' to monitor functionality and QC.
In the field you can connect your 'test unit' to diagnose faults that may be present.
You will need to tap into each data logger's circuits in a number of places to check operation. That must be done without disturbing the unit under test. You could insert an extra plug&socket tap as a wedge between existing mated connectors. That would not be convenient with screw terminals.
The alternative would be to provide a standard external field test connector that gives access to the majority of internal connections on all the data loggers built. Your test unit can then evolve as further tests are developed during the manufacturing and testing phases.
After building a data logger you can plug in your 'test unit' to monitor functionality and QC.
In the field you can connect your 'test unit' to diagnose faults that may be present.
You will need to tap into each data logger's circuits in a number of places to check operation. That must be done without disturbing the unit under test. You could insert an extra plug&socket tap as a wedge between existing mated connectors. That would not be convenient with screw terminals.
The alternative would be to provide a standard external field test connector that gives access to the majority of internal connections on all the data loggers built. Your test unit can then evolve as further tests are developed during the manufacturing and testing phases.
adamaero
- 109
- 1
Yes, that's the easy part.Baluncore said:Designing from the top, down;
After building a data logger you can plug in your 'test unit' to monitor functionality and QC.
...
It's only a few feet. The site is remote, but powered by solar panels. Transmission line effects are negligible.berkeman said:... communication lines.