# QWIIC Quad Solid State Relay not adressing properly **URL:** \ **Category:** Qwiic System\ **Tags:** qwiic\ **Created:** [August 21, 2021, 5:51pm UTC](https://community.sparkfun.com/t/qwiic-quad-solid-state-relay-not-adressing-properly/42628 "2021-08-21T17:51:43Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![MacIntoShiba](https://avatars.discourse-cdn.com/v4/letter/m/73ab20/32.png) [@MacIntoShiba](https://community.sparkfun.com/u/MacIntoShiba)\ **Post date:** [August 21, 2021, 5:51pm UTC](https://community.sparkfun.com/t/qwiic-quad-solid-state-relay-not-adressing-properly/42628/1 "2021-08-21T17:51:43Z")
Hello, I bought two QWIICc Quad Solid State Relay (part number: 16833, link: [https://www.sparkfun.com/products/16833](https://www.sparkfun.com/products/16833)) I also bought four: Qwiic Cable - Breadboard Jumper (part number: 14425, link: [https://www.sparkfun.com/products/14425](https://www.sparkfun.com/products/14425)) I would like to control these relays with a Raspberry Pi 4, but I cannot get it to work. My problems is exactly the same to this topic: [viewtopic.php?f=105&t=55721](https://forum.sparkfun.com/viewtopic.php?f=105&t=55721) When I connect the Raspberry pi to an Adafruit PCT2075 temperature sensor (I2C), and I run i2cdetect, it gives confirmation that the 0x37 adress (as expected) is connected. Therefore the I2C is correctly configured. I followed this tutorial for configuring I2C ([https://www.artekit.eu/enabling-the-i2c … pberry-pi/](https://www.artekit.eu/enabling-the-i2c-on-the-raspberry-pi/)) ![i2cdetect_Adafruit_PCT2075_STEMMA.png](https://canada1.discourse-cdn.com/sparkfun/original/3X/9/0/9018b803576ebb2c7659a384d0fb0471b512cde9.png) However when using the SAME Raspberry Pi, connected the SAME manner, running i2cdetect, nothing is detected. This is the case for both Quad relays (16833). The power led on the board is lit, showing it receives power. ![QWIIC_quad_relay_connect.jpg](https://canada1.discourse-cdn.com/sparkfun/original/3X/c/0/c08ca2543566051fb083b897b8c15234fa8cb99c.jpeg) ![i2cdetect_Sparkfun_QWIIC_Quad_SSR.png](https://canada1.discourse-cdn.com/sparkfun/original/3X/9/f/9fb2bae465a5609f93eb0c7ffeb7f0faafb51dfc.png) I connected the Raspberry Pi in the following manner to the breadboard jumper (14425): 3.3V to red cable GPIO 2 (SDA) to blue cable GPIO 3 (SCL) to yellow cable GND to black cable I also switched the SDA and SCL to no avail. Do I need to use an external power supply? Or can I connect the red cable to a 3.3V pin of the Raspberry Pi? What can I do to get this working? ---
**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\ **Post date:** [August 23, 2021, 8:42pm UTC](https://community.sparkfun.com/t/qwiic-quad-solid-state-relay-not-adressing-properly/42628/2 "2021-08-23T20:42:05Z")
This is probably bad firmware; head over to [www.sparkfun.com/returns](http://www.sparkfun.com/returns), fill out the short form, and we’ll send out some replacements ASAP. Happy sparking! ---
**Author:** ![mrgard](https://avatars.discourse-cdn.com/v4/letter/m/e8c25b/32.png) [@mrgard](https://community.sparkfun.com/u/mrgard)\ **Post date:** [August 25, 2021, 2:02pm UTC](https://community.sparkfun.com/t/qwiic-quad-solid-state-relay-not-adressing-properly/42628/3 "2021-08-25T14:02:58Z")
Which batch-number was this? (printed on the Sparkfun carboard box) Same problem here with 2 cards, batch = #139648 Gard ---
**Author:** ![TS-John](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-john/32/6093_2.png) [@TS-John](https://community.sparkfun.com/u/TS-John)\ **Post date:** [September 16, 2021, 9:33pm UTC](https://community.sparkfun.com/t/qwiic-quad-solid-state-relay-not-adressing-properly/42628/4 "2021-09-16T21:33:45Z")
It looks like we had missing firmware on the batch. Fill out a return ticket and we can get the issue taken care of: [https://www.sparkfun.com/returns](https://www.sparkfun.com/returns)