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EasySensors / ButtonSizeNode

The Button Size Node is a low cost wireless Arduino IDE compatible (the Atmel ATMega328P) micro-controller + RFM69HW(HCW) 915, 868 or 433 MHz radio on-board. BS2032
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questions power supply #2

Closed coelner closed 5 years ago

coelner commented 5 years ago
  1. The pin marked with VCC means VDD in the schematics? Or is the pin 1 from the xc6206 faulty labeled?
  2. VDD and BAT+ are connected over a 0 Ohm resistor?
  3. Any reverse current protection for the coin cell?
yurysvirida commented 5 years ago

Hi,

re: The pin marked with VCC means VDD in the schematics? Or is the pin 1 from the xc6206 faulty labeled?

No. VCC is connected with BAT+ and connected to LDO input. VDD1 is connected to LDO output

re: VDD and BAT+ are connected over a 0 Ohm resistor?

No, but you can short them with 0603 jumper if you do not need LDO.

re: Any reverse current protection for the coin cell?

yes

Thanks!

On Thu, Jun 20, 2019 at 1:43 PM coelner notifications@github.com wrote:

  1. The pin marked with VCC means VDD in the schematics? Or is the pin 1 from the xc6206 faulty labeled?
  2. VDD and BAT+ are connected over a 0 Ohm resistor?
  3. Any reverse current protection for the coin cell?

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yurysvirida commented 5 years ago

Strange

May the battery be dead by any chance? did you remove battery while you supply voltage externally? . We test all nodes before shipping. can you make photo of connected wires with external power source together?

On Thu, Jun 20, 2019 at 5:46 PM coelner notifications@github.com wrote:

Ok, thanks. Next issue: I supply either 3V from coin cell or 3.3V from the usbasp somehow the voltage is at 1.24V. That means I can not program the chip. Where should I start to look at?

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coelner commented 5 years ago

I deleted the original post because I can not create this setting by purpose. It seems to be a power problem while running. The systems crashes as soon as I try to transmit. The first coin cell was older and has got 3,08V, the new one has 3,23V without any load. I reduced the transmit power, so far it works

coelner commented 5 years ago

Another question: Could you update the schematics with the pin headers from the pcb?

As seen here: ButtonSizeNodeNew.pdf the VCC_PR is not connected, I guess that is the Pin 1 with BAT+ from the LDO?