# How to change default state off Raspi pins at start node red service
**URL:** https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300
**Category:** General
**Created:** [14 June 2020 06:37 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300 "2020-06-14T06:37:53Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 06:37 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/1 "2020-06-14T06:37:53Z")
Hi ,
Pretty new on Node Red, I want to make a water irrigation for my garden with 2 watervalves and 1 waterflow control for security. (later on some moisture sensors and so on)
First of all the 2 watervalves are planned to be activatet from 5 volt relays on a pi zero.
When node red starts it put my pin's state connectet to the relays low , which results in triggering the relays and opens the water flow(because the relays are low level triggered).
This results in a Γ₯ben watervalve when reboot RaspOS or start node red service.
Very bad i my situation, water shall not flow just at starting node red.
I'm looking for a solution:
β’ Why is node red somehow take control over the pins state ?
β’ Is it possible to design the node red flow to put the pins high at start node red?
I I prefer not to change the relays or modify them with soldering because of possible more errors.
I want to learn more about the behavior of node red instead.
MORE INFO:
Pins connectet 11 and 36 state of both pins are:
1 AND IN when node red is not running
Pins connectet 11 and 36, state of both pins are:
0 and OUT when node red is running.I guess the flow is running as well.
I read the pins with "gpio readall" command
Pin numbers are physical pin numbers.
I will be grateful for some help here π
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [14 June 2020 06:53 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/2 "2020-06-14T06:53:42Z")
Is it node red doing it or are you seeing what happens before node red gets going? Stop node red from starting on boot in order to check that.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [14 June 2020 08:17 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/3 "2020-06-14T08:17:34Z")
If it is definitely node-red then show us how you have configured the pins in node-red. In other words how have you configured the GPIO nodes that control those pins?
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### Author:  [@edje11](https://discourse.nodered.org/u/edje11)
#### Post date: [14 June 2020 09:09 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/4 "2020-06-14T09:09:46Z")
Buy other relays that are active high or add an inverter transistor.
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### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 09:14 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/5 "2020-06-14T09:14:25Z")
Hej Colin Thanks for your reply , it is node red doing it for sure i,am nearly 100 % sure: gpio readall pins at booting Pi shows all pins in high state , dubbel checked it with toggling between node-red-start and node-red-stop (stops the NR service) and these 2 pins go high again when node red service stops.
PIN READING WITH NODE RED SERVICE STOPPED , :
PIN READING WHEN NR SERVICE STARTET PIN 11 AND 36 CHANGED STATE TO LOW:
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [14 June 2020 09:23 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/6 "2020-06-14T09:23:01Z")
I note that physical pin 11 in your first image is high (1) and in `IN` mode while in the second image it is low (0) and in `OUT` mode....
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### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 09:31 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/7 "2020-06-14T09:31:10Z")
Just as a start 2 inject nodes, one with payload 0 and one with pay load 1
2 gpio nodes with digital output and afcours the pin in question.
INJECT NODE PIN 11:
RPI GPIO NODE:
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### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 09:39 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/8 "2020-06-14T09:39:03Z")
Hi zenofmud , Correct and this happens when node red starts , thats my question , Why is node red doing this? these pins are connectet to a relay that low triggers. π
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [14 June 2020 09:58 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/9 "2020-06-14T09:58:24Z")
In the image you have posted you have told it to initialise the pin low. If you want it initialised high then change that.
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### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 21:29 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/10 "2020-06-14T21:29:36Z")
Great , I changed the initialised pin to 1 and that solved the problem, Thanks a lot Colin ! π
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### Author:  [@Johannes](https://discourse.nodered.org/u/Johannes)
#### Post date: [14 June 2020 21:34 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/11 "2020-06-14T21:34:39Z")
Thx Edje but i do not wan't to change the hardware at first. I want to know what is going on in Node Red first.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [28 June 2020 21:34 UTC](https://discourse.nodered.org/t/how-to-change-default-state-off-raspi-pins-at-start-node-red-service/28300/12 "2020-06-28T21:34:40Z")
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