Re: Update for ADC Config File #sensors #adc

Jack Spitznagel


I missed that he was building. Best success to him!



From: <> On Behalf Of Bryan Hoyer
Sent: Friday, July 17, 2020 15:06
Subject: Re: [draws and udrc] Update for ADC Config File #sensors #ADC


John will add it to a future release, after he finishes his new home in Kingston WA

On Jul 17, 2020, at 12:01 PM, Jack Spitznagel <kd4iz@...> wrote:




Quick Question on that: Has John implemented this in the DRAWS Manager? Does not appear to be the case. At the bottom of current version, the status bar says:


Digital Radio Amateur Work Station | Adapter: bcm2835 I2C adapter • +12V: +13.68 V • in5: +2.50 V • User ADC 1: +0.01 V • User ADC 2: +0.00 V 

Raspberry Pi 4 Model B Rev 1.2 | CPU Temp: 108.24° F (42.36° C) • Uptime: 21 hrs 49 mins • Load AVG: 1m:1.07 5m:1.19 15m:1.17 


Not in a hurry to do this, but the replacement board is working well… Many thanks.


Jack Spitznagel – KD4IZ

Trustee for NR3DT

The USCGC W-37 Amateur Radio Group




From: <> On Behalf Of Bryan Hoyer
Sent: Friday, July 17, 2020 14:51
Subject: [draws and udrc] Update for ADC Config File #sensors #ADC


Hello All,

DRAWS Has an on-board ADC to monitor the 12V supply. Sometime after the first run, 5V monitoring was added, but the config file wasn't updated so the sensors command doesn't work correctly.

the fix is to change /etc/sensors.d/draws as follows:

pi@K7UDR:/etc/sensors.d $ cat draws 

#DRAWS uses the TL024 Which is SW Compatible with thw ADS1015

#It's an 8 Channel ADC, but only 4 Channels are pinned out


chip "ads1015-*"

        label in4 "+12V"

 label in5 "+5V"

label in6 "User ADC 1"

label in7 "User ADC 2"

compute in4 ((48.7/10)+1)*@, @/((48.7/10)+1)

        compute in5 ((10/10)+1)*@, @/((10/10)+1)


pi@K7UDR:/etc/sensors.d $ sensors


Adapter: ISA adapter

in0:              N/A  



Adapter: bcm2835 I2C adapter

+12V:        +13.52 V  

+5V:          +5.06 V  

User ADC 1:   +0.00 V  

User ADC 2:   +0.00 V  

To learn more about this, check out the man page for lm-sensors

Bryan K7UDR


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