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296 Results for "MPPT"

  • SAM - Solar Automation Machine.
  • Details     from SAM - Solar Automation Machine.
  • Sam is to be a smart solar charge monitor and controller with extras. SAM will: -monitor the voltage and current on my solar panels -monitor the voltage and current on my batteries -monitor the temperature of the panels and system -monitor the light...

  • RT8272 => Tiny-1charger
  • Log     from 1Charger
  • The RT8272 looks very promising ( especially with a 22uF cap at Vin ), so far it has no problem charging with my smallest 0.2A to my largest 1.5 A solar panel ( with clouds or clear blue sky ).http://tw.richtek.com/assets/product_file/RT8272/DS8272-02.pdf...

  • Dodgy data logger
  • Log     from SentriFarm
  • So I managed to build a data logger over the weekend from an Arduino Leostick, a TinyRTC, DS18B20 and MSP430-SOLAR. In the end I didn't need the opamp, after verifying that the solar voltage definitely capped out at about 2.5V. So it monitors four voltages:...

  • Another update
  • Log     from SentriFarm
  • Well I've been busy with other things. After talking to other people I'm still thinking I'll use the ESP8266 in the sensors, but I am probably going to build a head to head ESP8266 vs. Arudino Micro plus NRF24L01 and see how they go against each other....

  • Updates, repairs, powa!
  • Log     from Solar Boat Controller
  • Womp, womp. Firefox has been crashing a lot lately and well.... I lost a draft post from yesterday sooooo... this one won't be as long. General Boat Updates Earlier this summer before I got swamped with work a friend came around to help me give the boat...

  • One Step closer!
  • Log     from FossaSat-1, Open Source Satellite
  • Back with another update after several weeks! FossaSat-1 progress is coming along nicely and I am proud to announce we have started construction of the flight models. Final thermovacuum and vibration testing is being carried out the 17th of July and...

  • OK, a breadboard
  • Log     from MPPT for low voltage solar harvesting
  • Here's a basic breadboard test of the pulsed discharge of the buffer capacitor. The variation in flash rate/duty is due to the time it takes to recover to a certain voltage, before repeating the discharge down to a threshold voltage, a few 100mV below...

  • A little race
  • Log     from MPPT for low voltage solar harvesting
  • I took the lash-up in the previous log and raced it against a plain "connect your supercapacitor to your solar panel here" arrangement. I thought a fair and useful course to run would be to charge the supercapacitor from 2V to 3V, as this is usable for...

  • Autonomous grass cutting rover
  • Details     from Autonomous grass cutting rover
  • Motion drive characteristics 4WD made of monster truck RC wheels4 12V DC motor, 180RPM , high torque 27kg/cm,  6A max current => 24A max125mm diameter Wheels Power characteristics 190Wh battery pack self made from 18650 cells: pack configuration...

  • Choosing a battery charger chip
  • Log     from OpenAirMonitor
  • With the current global chip shortage it can be challenging to find the right chip for your project that's actually in stock. I want to share some of my own challenges and what the options are. First up: What LiPo battery charger chips can be used with...
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