Qwiic Thermocuouple resisters to set Address

You hookup guide lists the resistance values in Kohm but you don’t sell em and I’m having trouble finding suitable resisters on Digikey; So here’s the list of questions to solve problem:

Q1: names or sellers such as Digikey etc.

Q2: What tolerance resister(s) should I order,

Q3: What wattage minimum or range for these resisters.

I’m currently stuck like a rat without a source for these resisters as I am populating one set of 8 for example for cylinder head and exhaust gas temps for a 4 cylinder lycoming on my experimental RV7-A

THANK YOU

Digi-Key

https://www.digikey.com/en/products/fil … sistors/53

Select 1/4 watt and what ever resistance is needed in K ohms.

Tolerance shouldn’t matter, anything from .001 to 20% should be fine.

0x60: 0R - Jumper JP1 (default)

For other addresses, cut JP1 and add one of the following resistors. These are Digikey part numbers. They are all Yageo parts, but resistors from any vendor is fine. As YellowDog said, 1/4w and 1% is a good choice and cheap.

0x61: 2k2 - MFR-25FTE52-2K2

0x62: 4k3 - MFR-25FRF52-4K3

0x63: 7k5 - MFR-25FTE52-7K5

0x64: 13k - MFR-25FRF52-13K

0x65: 22k - MFR-25FTF52-22K

0x66: 43k - MFR-25FTE52-43K

Thanks, I had figured out how to get the resisters at 1/4 watt and 1%. Now for the hopefully not an oopsy related question: I have 8 of them I want to put the bus, but the examples seem to work with only one on the bus. How to code it for 8 thermocouples: four cylinder head temps, and four exhaust gas temps. Thanks.

Sorry about that, figured it out. The Ye Olde Shoot, Ready, Aim: Oops, that’ll leave a mark :slight_smile: