Eval¶

• Big LEDs to test outputs / Backlight-PWM
• Amplified Buzzer to test buzzer output directly on MCU
• PWM output to test buzzers; 3V; normal and amplified
• Test for CANBus-cables;
  • MCU with 4 inputs
  • 4 outputs to control which line to be tested to detect shortcuts
  • 4 outputs for LEDs to indicate errornous wire
  • How detect shortcuts
  • Button to reset
• Durchgangsprüfer ( buzzer-out / Buzzer-in )
  • Do i really need this? Dont want to setup an multimeter
  • Does not cost much
  • The signal is already there. It might be usefull to inspect the board

Functions¶

• Measure power consumption of boards
• Measure functions of PCBs (PWM Buzzer, Backlight)
• Measure periphery (e.g. buzzers)
• Test CANBus wires

Buchsen¶

• GND
• Durchgang
• PWM out
• PWM in to buzzer
• LED/BL in to big LED
• Strom-Mess-Durchgang mit Schiebeschater; e.g. 1101M2S3CGE2

• 2xJST-4; Kabeltest
  • Auch ueber Stiftbuchse fuer Schoenes Gehaeuse, Acryl ala Ophio

Stiftleiste

• GND
• 3V
• 5V
• LED in 1
• LED in 2
• LED in 3
• LED in 4

• 2 Buzzers
• 1 Big LED
• Heardbeat
• User
• 1 Buzzer reset test
• 4 LEDs "open connection"

MCU Pins¶

• 4 GPIO out cable-test
• 4 GPIO Input test
• 4 GPIO LEDs
• 1 LED "Running" amber
• 1 LED "Good" green
• 1 LED "Failed" red
• 1 LED "Not 1:1" orange
• PWM buzzer
• Button start testing
• 2 LEDs HB, User

20 Pins; STM32G030C8T6 Cheap and boring LQFP48;

2 Uart
2 I2C
2 Pow

No-MCU version¶

• 4-Pin JST Power fuer CCandis Versorgung; CANBus
• 2-Pin JST CAN outlet for PC adapter; CAN
• 2-Pin JST Power fuer Miniminutnik; 3V
• 3-Pinheader Power VOUT, 5V, 3V, GND
• USB; 5V in
• Spannungsregler 5V; L78M05; was habe ich von den LED-Reglern?
• Spannungsregler 3V; UA78M33CDCYR 3V3; 0,5A;
• 2 Pin VIN; 8-24V
• 2 Pin VIN; 3V
• 2 Pin Measure
• Schieberegler Shortcut; 1101M2S3CGE2
• Strom messung 5V/3V; Schieber; 1201M2S3CQE2
• 2 * Power-LED; 5V, 3V
• 4 * LED-In; 3V
• 1 * LED-In; 3V
• Buzzer-Input

Je nach Stellung des Spannungs-Schiebeschalter sind an den Spannungsausgaengen nur 5V oder nur 3V verfuegbar.
Strom ueber GND der Ausgaenge messen. Kein Spannungs-Schiebeschalter.
LEDs koennen gaengige 3528 sein. 20mA@2V. Use Mosfets.

Testbar:

• Buzzer-PWM-Ausgang
• 4*3V Ausgaenge
• Backlight-PWM (Weisse LED ueber Mosfet)
• CAN durchgeroutet an PEAK Adapter
• Stromverbrauch, auch im Off-Zustand
• Brownout ueber 3V Eingang; manuel runterregeln

Nicht testbar:

• Einen Buzzer an sich; "bringup" ist kein Funktionsgenerator
• I2C Ausgang; There are enough sensors around; I2C Ausgang sehr spezifisch (only CANIO & CANRec)
• Kabel durchgang

MCU benefits

• Canpong integrierbar
• Funktionsgenerator