Makerverse Nano Power Timer HAT for Raspberry Pi Pico

I am using Makerverse Nano Power Timer HAT for Raspberry Pi Pico and I notice that when the timer is stopped, the RS85 that I use to obtain humidity, temperature, conductivity and salinity has a voltage of 4.75v and the radio emitter 2.89v when I emit they have 5.07 and 3.3v this means that it is consuming battery. They really should be at zero consumption

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Hi Joaquin,

Welcome back :slight_smile:

If you connect the Pico just by itself are there still voltages present on the Vsys pin?

Would it also be possible to send through a quick system diagram of your setup? It might be possible that there is some leakage through the RS485 module powering the system.

Liam

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Thank you for your quick response, the problem is solved, it was a bad connection in the design, Makerverse Nano Power Timer Hat is an excellent product, it works correctly

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Hi Joaquin,

Glad to hear you got it working correctly!
Just out of curiosity what was the bad connection?

Liam

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It is a node of an irrigation system with lora, I need to save energy so I use the makerverse nano power timer, the radio works at 3.3V but the humidity, temperature, conductivity and salinity sensors need 5V I used a booster to get the 5V… I don’t know what is better if to connect the boost after the battery to connect with the makeverse or raise the voltage after connecting to the Vsys and Gnd to connect the sensors
Thanks for your interest

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Hi Liam, The irrigation node with the Makeverse Nano Power Timer is not working properly. A curious thing happens, when I use the node with a 5v power bank connected to the input of the Makeverse Nano Power Timer, the radio transmitter gives an error with an RSSI of double if I connect it to the input of the raspberry pi pico I do not have a timer but the radio It works correctly if you look at the last two figures are the RSSI and SNR that arrive at the gateway.
I don’t know if you can help me but thanks in advance

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With usb connection to raspberry pi
16:53:36.965 β†’ +RCV=1,12,0.0,27.1,0,0,-40,32
16:56:47.464 β†’ +RCV=1,12,0.0,27.1,0,0,-41,33
16:57:00.341 β†’ +RCV=1,12,0.0,27.0,0,0,-41,33

Power bank 5v connected to Makeverse Nano
16:57:36.718 β†’ +ERR=12
16:58:36.857 β†’ +RCV=1,12,0.0,27.0,0,0,-88,-32
16:59:36.968 β†’ +ERR=12
17:00:37.088 β†’ +RCV=1,12,0.0,27.1,0,0,-88,-37
17:01:37.207 β†’ +ERR=12
17:02:37.340 β†’ +RCV=1,12,0.0,27.1,0,0,-87,-30
17:03:37.458 β†’ +ERR=12
17:04:37.565 β†’ +RCV=1,12,0.0,27.0,0,0,-87,-31
17:05:37.660 β†’ +ERR=12
17:06:37.813 β†’ +RCV=1,12,0.0,27.1,0,0,-88,-35
17:07:37.895 β†’ +ERR=12
17:08:38.053 β†’ +RCV=1,12,0.0,27.1,0,0,-88,-37
17:09:38.128 β†’ +ERR=12
17:10:38.285 β†’ +RCV=1,12,0.0,27.0,0,0,-86,-34
17:11:38.397 β†’ +ERR=12
17:12:38.510 β†’ +RCV=1,12,0.0,27.1,0,0,-88,-33
17:13:38.636 β†’ +ERR=12
17:14:38.733 β†’ +RCV=1,12,0.0,27.1,0,0,-87,-33
17:15:38.834 β†’ +ERR=12
17:16:38.973 β†’ +RCV=1,12,0.0,27.1,0,0,-88,-34
17:17:39.065 β†’ +ERR=12

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The Makeverse Nano power timer card should not be connected to the Raspberry pi pico because it consumes a voltage that penalizes the lora radio module making it come out with less power (half) If I connect the Makverse and the pico separately through VSYS GND the radio module works correctly

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Hi Joaquin,

Which LoRa radio were you using and how was everything connected(would it be possible to send through a diagram)?

There is a schottky diode inline with the Vbatt - Vsys pin though the voltage drop should not affect the radio voltage seen at the radio too much (equivalent to the battery being fully charged vs partially discharged).

If you measure the 3v3 pin of the Pico when powered from 5V through the Pico and via the Makerverse Power timer what are the voltages?

Liam