Hardware » Minutnik

03.11.2022

15:02 Minutnik eInk Fehler #298 (Erledigt): Temperature-Sensor, Flash etc are permanently on VDD

There is already an switch for Display.
Temperature-sensor and FLASH can be connected to this power source.
Need ... Maximilian Seesslen

02.11.2022

10:52 Minutnik eInk Fehler #288 (Erledigt): Device No.2 freezes when connected to USB

The BOOT-Resistor was way too high (1M Ohm).
Replace it with 10K-Ohm worked.
Maximilian Seesslen

31.10.2022

12:47 Minutnik eInk Fehler #288: Device No.2 freezes when connected to USB

Seems the very high BOOT-resistor was the problem.
Maximilian Seesslen

29.10.2022

18:11 Minutnik eInk Fehler #294 (Erledigt): L1: Footprint 1206 instead of real 1210

Maximilian Seesslen

28.10.2022

22:17 Minutnik eInk Fehler #288: Device No.2 freezes when connected to USB

Could reproduce it also with serno.1.
The disturbtion on VDD is quite high when USB is connected (ca. 24ns breakdown... Maximilian Seesslen

14:35 Minutnik eInk Unterstützung #292 (Erledigt): Power injection pins 3V missing

One additional testpoint for 3V would help to measure power consumtion of MCU side.
Maximilian Seesslen

26.10.2022

14:45 Minutnik eInk Fehler #288: Device No.2 freezes when connected to USB

Is USB power to low?
Maximilian Seesslen

14:40 Minutnik eInk Fehler #291 (Erledigt): ADC Spannungsteiler ist permanent

Route the ground to an GPIO so it can be disabled and will be disabled when powered off.
Or even use an NMOS.
I m... Maximilian Seesslen

14:38 Minutnik eInk Fehler #290 (Neu): Yellow and red LEDs are quite dark

This is only noticable with lighttramitters which blocks/diffuse some light.
Maximilian Seesslen

25.10.2022

11:03 Minutnik eInk Fehler #288 (Erledigt): Device No.2 freezes when connected to USB

Device No.1 can not reproduce this.
Maybe Brownout-detection fails. Check other groups.
OB_BOR_LEVEL3: Supp... Maximilian Seesslen