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This low cost charger controller for under £20 gives better results than an expensive Morning Star £70 controller I had in my last van.
After checking levels and tightness of the connections at the battery and charge controller this week in March 2011, I noticed the pulsing equalization charge to the battery from the controller was 14.9 volts, I was a bit alarmed at such a high voltage at first, until I re-read the instruction manual, it stated that when the battery is fully charged and the ambient temperature is at zero or below, the controller will output nearly 15 volts in the equalisation mode for a short time before going into float mode of 13.8 volts. The equalisation mode will bring all cells in the battery bank up to the same charge level, so conditioning the battery. Seems to work as I have never had an Elecsol Carbon Fibre battery fail me in the last eleven years, the oldest battery being over ten years old, putting an old battery and new battery in parallel is supposed to be a no no, but it worked for me, and the charge controller seemed happy enough.
I am not sure just how happy my unregulated cheapo SMD 5050 LED lighting will be with a pulsating (PWM) line voltage/power, although if the sun is out I suppose I won’t be using the lights anyway.
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Hi Pete,
The SMD 5050 leds I have are the two quid variety from China, they have the tiny MB6S bridge rectifier so the led assembly connections are not polarity conscious, and a selection of resistors mounted on the pcb rear, but no voltage stabilisers, so they are rated at 12 volts only. Reading the forums some members have suggested that they should work up to 13.5 volts with not too much detriment to their longevity.
On a fully charged battery and when the controller is in the equalisation mode, the PWM frequency is fast enough not to effect the performance of the leds , i.e. no flickering can be detected, the battery would smooth things out as you remark, but the voltage at the battery terminals is still reading nearly 15 volts, not too good for my cheapo Chinese SMD 5050 leds.
I noticed as the cvan voltmeter was indicating 15 volts (verified) while the ammeter monitoring the controller output power, was cycling very quickly between 0.3 amps to 1.5 amps, now I know the ammeter will lag, but it looks to me as if the PWM is pulsing the power and not the voltage. If we get the same sunny conditions and zero ambient temperature later I will put my scope on the controller output to see what is actually happening.
I think you will find the 12 volt G4 LED types that stand up to 30 volts are the ones that cost upwards of £8 each not the 30 bob ones that I have – I know I’m a cheapskate -
Does anyone else have the combination of Solar Panel and the Cheapo Chinese LEDs ? and could check the battery voltage on a fully charged battery when the sun comes up?
Regards Terry
Nore about LEDs on link below.
www.caravantalk.org.uk/topic/44237-l-e-d-s-m-d-lights/pag...
Quadrotor Flight Controller class at the HiTech STEM Lab at the East Columbia Branch of the HCLS. The purpose of the class is to introduce students to quadcopters through hand-on learning. The studets investigated the physics behind multirotor liftoff, stabilization, direction of flight, and landing the aircraft. Students worked in teams to assemble the
propulsion system and wire the flight controller and power system. Students honed their flight skills through a flight simulator before flight testing their builds in the final class.
Silence at the controls: the lead operator's headset, here at the once-buzzing nerve centre of the National Gas Turbine Establishment's core, issued its last order many years ago and is now condemned to collect dust for the rest of its days until the derelict facility is eventually demolished.
A breadboard test of a DC motor controller. It works by PWM (Pulse-Width Modulation), using a TLC3704 comparator chip to generate a variable mark/space ratio square wave. This is then fed to a HUF75337 power MOSFET. There's a 5k pot in a box to control it.
Monster Mash is a long-standing Special Tactics tradition, consisting of an obstacle course where special operators complete timed scenarios at different stations of core mission training. The event was held in honor of Chief Master Sgt. Bruce W. Dixon, command chief of the 24th Special Operations Wing, who is retiring after a 30-year career as a combat controller. In total, he spent ten of those thirty years away from his family, consistently serving his nation's call in dangerous ground combat and training.
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Quadrotor Flight Controller class at the HiTech STEM Lab at the East Columbia Branch of the HCLS. The purpose of the class is to introduce students to quadcopters through hand-on learning. The studets investigated the physics behind multirotor liftoff, stabilization, direction of flight, and landing the aircraft. Students worked in teams to assemble the
propulsion system and wire the flight controller and power system. Students honed their flight skills through a flight simulator before flight testing their builds in the final class.
Arduino-based temperature controller with variable rate temperature change. It will hold an initial temperature for a specified amount of time, and will then ramp that temperature up or down, and hold at a final temperature. For example: heat a water bath for chocolate to 130 and keep it there for 10 minutes (assuming it will take that long to melt all of the chocolate). Then reduce temperature by 1 degree every 10 seconds for 40 iterations, and keep at a tempered 90 degrees until you power everything off. Many cheese making recipes specify heating from X to Y at no more than 1 degree every minute, so this is perfect for that. No more hovering over a water bath for hours!
Quadrotor Flight Controller class at the HiTech STEM Lab at the East Columbia Branch of the HCLS. The purpose of the class is to introduce students to quadcopters through hand-on learning. The studets investigated the physics behind multirotor liftoff, stabilization, direction of flight, and landing the aircraft. Students worked in teams to assemble the
propulsion system and wire the flight controller and power system. Students honed their flight skills through a flight simulator before flight testing their builds in the final class.
Quadrotor Flight Controller class at the HiTech STEM Lab at the East Columbia Branch of the HCLS. The purpose of the class is to introduce students to quadcopters through hand-on learning. The studets investigated the physics behind multirotor liftoff, stabilization, direction of flight, and landing the aircraft. Students worked in teams to assemble the
propulsion system and wire the flight controller and power system. Students honed their flight skills through a flight simulator before flight testing their builds in the final class.
IDbike motor controller at LEV Components Special Exhibition.
Read the article: extraenergy.org/main.php?language=en&category=&su...
You are free to
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
You must give appropriate credit and provide a link to : unmatchedvalue.com/
Oh my this was harder than I expected, I had crazycakes.eu problem I had a killer of a migraine and struggled to keep going. However this is the end product, I hope it looks like a controller and my client is pleased! we shall see.
These controllers :-D
1: They put the 347s NippyStreet on the 239
2: They put one of the 239s OmniCities on the 497
3: They put one of the 497s Nimbuses on the X1????
Quadrotor Flight Controller class at the HiTech STEM Lab at the East Columbia Branch of the HCLS. The purpose of the class is to introduce students to quadcopters through hand-on learning. The studets investigated the physics behind multirotor liftoff, stabilization, direction of flight, and landing the aircraft. Students worked in teams to assemble the
propulsion system and wire the flight controller and power system. Students honed their flight skills through a flight simulator before flight testing their builds in the final class.