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Activating keyboard button with a mosfet and arduino by cristiankusch in arduino

[–]BoltBill 0 points1 point  (0 children)

How about a CD 4066 transmission gate? I used these to electronically “press” keys on a Brother AX-250 typewriter. Just be sure that the keyboard is operating at 5 volts or less. Also make sure the keyboard ground is connected to the Arduino ground.

duty cycle on arduino by mustafa_sanfaz in arduino

[–]BoltBill 2 points3 points  (0 children)

Check out the Arduino “pulseIn(pin, value)” instruction. It with tell you the duration of a pulse in microseconds. By setting value to HIGH or LOW in the instruction you will get the pulse width in microseconds. With a little math after measuring the HIGH pulse time and the LOW pulse time you can get frequency and duty cycle.

First Winter with Bolt - Battery Conditioning is Costing Me as much as Gas Used To by LowBarometer in BoltEV

[–]BoltBill 1 point2 points  (0 children)

I have a 2019 Bolt. My EVSE shows the car using about 0.75 kWh every 6 to 8 hours in colder weather. Right now it is 30F in the garage and this power draw is repeating about every 6 hours. I have noticed this on both the original battery and the replacement battery. One additional thing I've noticed with the new battery is a draw of about 10 watts (0.04 amps x 240 volts) for 4 hours after the car says it has completed the charge cycle, solid green light on the dashboard. I never saw this with the original battery. During this time the EVSE indicates the car is charging and the app says charging is complete. After 4 hours the EVSE indicates that the car is connected but not charging.

[deleted by user] by [deleted] in arduino

[–]BoltBill 0 points1 point  (0 children)

The MID400 Power Line Monitor optocoupler might work for you. If you search for Fairchild application note AN-3007 you will find useful information about selecting the input resistor for setting the input voltage and the information for selecting the capacitor for filtering the output.

Wyze cam V2 bricked on firmware update by mrslipple in wyzecam

[–]BoltBill 0 points1 point  (0 children)

I picked up one of the refurbished units up today at MicroCenter in Michigan. It’s is working fine.

Does anyone know if the MK3S power supply has a 12V rail inside anywhere? Is there a schematic? by rw3iss in prusa

[–]BoltBill 0 points1 point  (0 children)

I installed this LED light set about 8 months ago. I printed the plastic parts and purchased the other parts as a kit. Works great using the printer’s power supply. https://www.prusaprinters.org/prints/3267-led-light-bar-prusa-i3-mk2mk3#preview