All Questions
10 questions
0
votes
0
answers
121
views
GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)
smstools3's /var/log/smsd.log keeps giving:
GSM1: Checking if modem is ready
GSM1: -> AT
GSM1: Command is sent, waiting for the answer. (5)
GSM1: No answer, put_command expected (OK)|(ERROR)|(0)|(4)...
- 161
2
votes
0
answers
35
views
Moisture sensor gives weird results when connected to a relay
I was about to review the items as faulty when I connected my brain and made a second test.
The sensor is supposed to return 0 when dry and 1 when wet. In my script I repeat the reading 100 times. I ...
- 21
1
vote
4
answers
5k
views
Using single 5V relay module (jqc-3ff-s-z) - Asking for help
I have a developer background missing the electronics background. I read some threads with great interest:
Using single 5V relay (jqc-3ff-s-z) - safety advice required
and
5V relay (jqc-3ff-s-z)
I ...
- 21
1
vote
1
answer
635
views
Is it safe to use 3V3 on raspberry pi 3B+ to control a 3V DC motor?
I want to connect power to a 3V DC motor straight from 3v3 GPIO. Is it safe or will I brick my Pi 3B+ ?
- 111
1
vote
0
answers
881
views
Connecting Raspberry Pi to old found TFT display
I have an old car DVD player sitting around that has a fairly decent secondary TFT LCD screen (hannstar 721h440b19-a1) that I thought I could use with my Raspberry Pi 3 Model B.
I opened up the unit,...
- 11
1
vote
1
answer
315
views
Wiring a SNES Controller to pi3 gpio or tactile switches
I'm looking to build a super pi boy, in the original they use tactile switches. However, I'm not sure how to wire the tactile switches and make them work as a x b y up down left right etc. I'm also ...
- 11
1
vote
1
answer
1k
views
How do I connect this anemometer to a Raspberry Pi? [closed]
I want to connect an anemometer to my Raspberry Pi 3.
I'm trying to use the Maplin N25FR Wind Speed Sensor.
How do I connect it to my Raspberry Pi?
I found this picture online, but I don't ...
user78819
1
vote
1
answer
2k
views
What would the wiring look like for the UV Sensor Breakout - ML8511?
I have a Raspberry Pi 3 Model B. I am planning to connect an ADC (analog to digital) converter called the MCP3008.
I will follow the diagram that is shown here (scroll down past the enabling SPI step)...
- 113
0
votes
1
answer
149
views
Would this be the full list of materials to connect a ML8511 UV sensor to a Raspberry Pi?
I have the SparkFun ML8511/UV Sensor Breakout.
In order to connect this to a Raspberry Pi would I need any other materials besides the following:
A Breadboard
A MCP3008 for analogue to digital ...
- 113
2
votes
1
answer
1k
views
What is the correct wiring using a break beam sensor with a Raspberry Pi 3?
I am looking to wire a break beam sensor to gather results and save them as eventually as JSON data. I am however totally new to hardware and believe there is an issue with the circuit.
I have the ...
- 123