wshealy
Full Member
Posts: 187
Raspberry Pi: Yes
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Sun 3 ?
Feb 26, 2022 15:23:30 GMT -8
Post by wshealy on Feb 26, 2022 15:23:30 GMT -8
BP I noticed in my SkyCam a Sun 3. What is the difference between 1,2 and 3?
Last year we discussed that in the midst of dark, dreary winter the batteries drain to zero and won't recharge when the sun comes out. I end up bringing them in, disassembling and plugging up the Sun to recharge. You mentioned you expected an upgrade last summer to disable the sensor saving enough juice to restart the charge. I was looking for a software update for Mini Pro but maybe you meant hardware. Do I need to get a couple Sun 3s?
Thanks
W
On this dark and dreary day off to replace the guts of my test SolarMax with the Kickstarter one. Yes, I'm behind. Making an order too. Hopefully we can replace the external antenna connector (internal with antenna removed and bad solder job) we discussed way back when (does it have a part number to order or will you add it?)
Thanks again. Wallace
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Sun 3 ?
Feb 27, 2022 10:12:16 GMT -8
Post by SDL on Feb 27, 2022 10:12:16 GMT -8
The other boards (SunAirPlus and SunAirPlus2) are functional, but this board does better in marginal environments. Here's the product page: shop.switchdoc.com/products/sunairplus3-solar-controller-charger-sun-tracker-data-gathering-grove-headerSunAirPlus3 is customizable with your software and hardware. Note that the battery and solar panel plugs on SunAirPlus2 are of type JST-PH 2 pin. The USB port is a USB Micro port Differences between SunAirPlus2 and SunAirPlus3- Removal of stepper motor and limit switch interface
- Addition of hysteresis and shutoff of load USB. ~3.7V turn on / ~3.2V turn off.
- VSS is cutoff to USB Out and I2C Grove port when board is powered down
- INA3221 I2C Address is 0x41
Features
The major features of the SunAirPlus3 board are: - Uses 6V Solar Cells
- Use 3.7V LiPo Cells for batteries
- Has Hysteresis built in to protect battery and load. Turn on at battery voltage of ~3.7 and turns off at battery voltage of ~3.2
- Has LiPo to 5V voltage boost built in
- Directly powers Raspberry Pi / Arduino
- Grove I2C Connector
- Works Raspberry Pi (3.3V) GPIO and Arduino (5.0V) GPIO
- Built-in data gathering chips for system currents /voltages
- Charges iPhones and other phones or devices
- Approximates an MPPT (Maximum Power Point Tracking) charging system
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wshealy
Full Member
Posts: 187
Raspberry Pi: Yes
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Sun 3 ?
Feb 27, 2022 11:49:06 GMT -8
Post by wshealy on Feb 27, 2022 11:49:06 GMT -8
So it solves the problem I had with Sun 2 draining to zero in bad weather and not charging when the sun came out? I think it does. Guess I need to add a couple to my order. Got to find my watchdog too. Might need one of them. W
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Sun 3 ?
Feb 27, 2022 11:59:36 GMT -8
Post by SDL on Feb 27, 2022 11:59:36 GMT -8
Yes! It does. And it is charging when the sun comes out, but very, very, very slowly. SunAirPlus3 fixes that.
BTW, the reason SunAirPlus2 charges it slowly is because of the rules for charging a discharged LiPo battery, not a fault of SunAirPlus2. We just figure out how to keep the battery from going so low on SunAirPlus3.
BP
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wshealy
Full Member
Posts: 187
Raspberry Pi: Yes
|
Sun 3 ?
Feb 27, 2022 12:40:12 GMT -8
SDL likes this
Post by wshealy on Feb 27, 2022 12:40:12 GMT -8
Great, I'll update my order tomorrow. W
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