Alan Z alanzhaonys

## wemos_usbhost.md

      
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                alanzhaonys
                / wemos_usbhost.md
            
            
              Created
              June 5, 2021 22:56
                — forked from joseftsch/wemos_usbhost.md
            
              
                wemos usb host 
              
          
    Today I connected my USB host board (see "hardware" section below) to my Wemos 1D device.
It receives data from an outdoor "weather station receiver" and prints in to serial console in Arduino IDE.
Hardware:


"ELV Wetterdaten Empfänger" (https://www.elv.at/usb-wetterdaten-empfaenger-usb-wde1-komplettbausatz-1.html)
USB Host Mini (http://www.hobbytronics.co.uk/usb-host-mini) preinstalled with "Serial Driver for FTDI, CP210X, PL2303"
Wemos 1D (https://www.wemos.cc/product/d1-mini-pro.html)

Arduino libraries:


https://github.com/plerup/espsoftwareserial


## bash_aws_jq_cheatsheet.sh
# Count total EBS based storage in AWS
aws ec2 describe-volumes | jq "[.Volumes[].Size] | add"
# Count total EBS storage with a tag filter
aws ec2 describe-volumes --filters "Name=tag:Name,Values=CloudEndure Volume qjenc" | jq "[.Volumes[].Size] | add"
# Describe instances concisely
aws ec2 describe-instances | jq '[.Reservations | .[] | .Instances | .[] | {InstanceId: .InstanceId, State: .State, SubnetId: .SubnetId, VpcId: .VpcId, Name: (.Tags[]|select(.Key=="Name")|.Value)}]'
# Wait until $instance_id is running and then immediately stop it again
aws ec2 wait instance-running --instance-id $instance_id && aws ec2 stop-instances --instance-id $instance_id

# Get 10th instance in the account
	# Count total EBS based storage in AWS
	aws ec2 describe-volumes \| jq "[.Volumes[].Size] \| add"
	# Count total EBS storage with a tag filter
	aws ec2 describe-volumes --filters "Name=tag:Name,Values=CloudEndure Volume qjenc" \| jq "[.Volumes[].Size] \| add"
	# Describe instances concisely
	aws ec2 describe-instances \| jq '[.Reservations \| .[] \| .Instances \| .[] \| {InstanceId: .InstanceId, State: .State, SubnetId: .SubnetId, VpcId: .VpcId, Name: (.Tags[]\|select(.Key=="Name")\|.Value)}]'
	# Wait until $instance_id is running and then immediately stop it again
	aws ec2 wait instance-running --instance-id $instance_id && aws ec2 stop-instances --instance-id $instance_id

	# Get 10th instance in the account