EX-CSB1 FAQ

CH340 USB Drivers

Windows USB driver is required.
CH340 driver info https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers

Note that only one program can use the USB connection simultaneously. Close the device monitor or other programs when uploading.

Track voltage

DCC is a square wave signal. The voltage of the track power supply will be present on each rail 50% of the time. Use the DC scale to measure voltage -- each rail vs GND should be 50% of track power supply.

Few digital multimeters will provide a consistent/useful reading on the AC scale.

OLED

Select 132x64 or 128x64
If one results in blank screen or image is shifted, try the other.

Power supply

If your power supply is less than 5A, add a line in config.h to set overcurrent reporting lower - 90% of track power supply.
motor-shield-max-current

Fault reporting

Continuous faults will be reported with power on, if track power supply is not connected.

An initial fault report at power-on is not an issue.

Overcurrent reporting

Some - 600mA or less - overcurrent reporting on the programming track is not unusual. This is due to lack of precision of the ESP32-WROOM ADC, and the 250mA trip current for the programming track when not reading/writing CVs.

There is a command <C PROGBOOST> to override the 250mA limit. Do not use it unless you are comfortable that your loco/decoder does not have issues (which 250mA is designed to protect).
Note that <C PROGBOOST> remains in effect until the command station is restarted.

WiFi

WiFi configuration is different, starting with version 5.7.0.
config.h is used for WiFi configuration in earlier versions.
Link to 5.7.0 WiFi Configuration

Note that if the new WiFi configuration commands are sent via a WiFi connection, your existing connection will drop. Current connection info should be reported on the OLED.

Discord

Join the discussion on the discord server.
https://dcc-ex.com/mkdocs-test/support/discord/