|Konrad Beckmann ab84239d4a Update readme with RevB updates||1 week ago|
|datasheet||5 months ago|
|hardware||1 month ago|
|.gitignore||3 months ago|
|README.md||1 week ago|
This is a PMOD built around the SX1257 tranceiver. It uses an I2C-SPI bridge (SC18IS602B) since only 8 io pins are used.
The pins VR_PA, VR_DIG, VR_ANA1 and VR_ANA2 should not be tied to VBAT/VCC, which they are. These are pins for decoupling for the internal voltage regulators, i.e. they should only be connected to single decoupling capacitors as stated in the datasheet.
RX performance is poor. Why? Maybe related to the above, or bad matching circuit?
In the build of 10 units, 2 failed completely and 2 had very bad RX performance. Maybe related to the issue above.