Customer:
When connecting 3.8 V to the BAT pin on the Dasduino CONNECTPLUS, the voltage on the VCC pin is 3.8 V. If the maximum voltage that can be connected to the BAT pin is 4.2 V, how is it possible to raise the voltage on the VCC pin to 5V? Also, when connecting a Li-ion battery 500mAh 3.7V to the JST connector, the voltage on the VCC pin is 3.99 V. Is there a way to power the Dasduino CONNECTPLUS with a battery while having the VCC pin voltage be 5V?
Would it work to connect the battery to the Dasduino via the VCC pin with the battery negative to the GND pin?
Original message (Croatian)
Spajanjem 3,8 V na pin BAT (na Dasduino CONNECTPLUS-u) napon na pinu VCC je 3,8. Ako je maksimalni napon koji se može priključiti na pin BAT 4,2 V kako je moguće podignuti napon na pinu VCC na 5V? Također, spajanjem baterije “Li-ion battery 500mAh 3.7V” na JST konektor mikrokontrolera napon na VCC pinu je 3,99 V. Postoji li neki način da se putem baterije napaja Dasduino CONNECTPLUS i da je u isto vrijeme napon na pinu VCC 5V?
Možda da se baterija spoji sa Dasduinom preko preko VCC pina sa minusom baterije na GND pinu?
Originally submitted via email support on 5 December 2023. Migrated to the forum for community visibility.
Soldered Support:
Every Dasduino board has the same power supply design, at least the first part where the VBAT and VCC pins are concerned.
The board can be powered via USB-C connector, battery, or via the VCC pin. The board has a circuit for automatic power source selection. The output from this circuit is the VCC pin (which also powers other components on the board). The input to the circuit is either the battery or USB-C. When USB-C is connected, the VCC pin has approximately 4.8V. When a battery is connected, the VCC pin has the battery voltage. The VBAT pin is connected directly to the battery (JST connector) and is also connected to the charger, which only operates when power is supplied via USB-C connector.
Depending on how the board is powered, the VCC pin will have different voltages that will be lower than 5V (4.8V if powered from USB, or the battery voltage if powered from a battery).
Original message (Croatian)
Svaka Dasduino pločica ima jednako napajanje. Barem prvi dio napajanja gdje su VBAT i VCC pinovi što Vas zanima.
Pločica ima mogućnost napajanja putem USB-C konektora, baterije ili preko VCC pina. Na pločici imamo krug za automatski izbor napajanja. Izlaz iz toga kruga je VCC pin (s toga se napajaju i ostali sklopovi na pločici), ulaz u sklop je ili baterija ili USB-C. Kada se spoji USB-C tada na VCC pinu imamo oko 4.8V, kada je spojena baterija onda na VCC pinu ima napon baterije. VBAT pin je spojen direktno na bateriju (JST konektor) te je on spojen i na punjač koji radi samo kada je napajanje dovedeno preko USB-C konektora.
Ovisno kako se pločica napaja imat će različite napone na VCC pinu koji će biti manji od 5V (4.8V ako je napajanje s USB-a, ili napon baterije ako se napaja s baterije).